The Aviation DataBase: Service Information: MD Helicopters
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Component Logs
NameRevisionLangSubjectDate
2 en Example
2 en 369D (500D), 369E (500E), 369F (530F), 369H, 500N (520N), 600N & 900
4 en Assembly Example
2 en 369D (500D), 369E (500E), 369F (530F), 369H, 500N (520N), 600N & 900: Assembly
Component Overhaul Manuals
NameRevisionLangSubjectDate
20 en 369D (500D), 369E (500E), 369F (530F), 500N (520N) & 600N06/24/2016
TR 07-001 en 369D (500D), 369E (500E), 369F (530F), 500N (520N) & 600N11/14/2007
10 en 369H09/15/2003
9 en 369H01/31/2003
Flight Manuals
NameRevisionLangSubjectDate
14 en 600N02/22/2016
TR 01-001 en 900 with PW206E11/02/2001
TR 01-001 en 900 with PW206A11/02/2001
4 en 900 with PW206A01/28/2014
reiss3 en 900 with PW206A01/28/2010
2 en 900 with PW206E10/31/2003
reiss2 en 900 with PW206E01/28/2010
reiss1 en 900 with PW207E (Eligible S/Ns 900-00008 thru 900-00051)01/28/2010
TR 01-001 en 900 (902 Configuration with PW206E) 11/02/2001
TR 01-002 en 900 (902 Configuration with PW206E) 11/28/2001
2 en 900 with PW206E (S/N 0052 and Subsequent)08/03/2012
reiss3 en 900 with PW206E (S/N 0052 and Subsequent)11/06/2009
reiss2 en 900 with PW 207E11/06/2009
TR 01-001 en 900 (902 Configuration with PW207E) 11/02/2001
TR 01-002 en 900 (902 Configuration with PW207E) 11/28/2001
13 reiss en 369D (500D)07/21/2016
21 en 369E (500E)07/21/2016
12 reiss en 369F (530F)06/27/2014
8 en 500N (520N)07/21/2016
Illustrated Parts Catalogs
NameRevisionLangSubjectDate
23 en 90011/11/2016
6 en 369H11/11/1994
revised en 369H03/16/1992
revised en 369H11/11/1994
revised en 369H03/17/1989
revised en 369H11/11/1994
revised en 369H03/16/1992
revised en 369H08/15/1988
revised en 369H09/30/1993
revised en 369H08/15/1988
revised en 369H11/11/1994
revised en 369H09/30/1993
revised en 369H11/11/1994
revised en 369H03/16/1992
revised en 369H09/15/1989
revised en 369H03/16/1992
15 en 369D (500D), 369E (500E), 369F (530F), 500N (520N) & 600N10/31/2016
Limited Warranty Manuals
NameRevisionLangSubjectDate
en All Models10/23/2007
1 en All Models01/01/2011
reiss en All Models01/01/2011
Logbooks
NameRevisionLangSubjectDate
4 en 500N (520N), 600N & 90005/31/2002
Maintenance Instruction Handbooks
NameRevisionLangSubjectDate
5 en 369H04/25/2007
TR 07-001 en 369H01/11/2007
TR 10-001 en 369H12/22/2010
2 en 369H09/30/1992
47 en 369D (500D), 369E (500E), 369F (530F), 500N (520N) & 600N10/15/2016
TR 08-001 en 369D (500D), 369E (500E), 369F (530F), 500N (520N) & 600N03/14/2008
14 en 369D (500D), 369E (500E), 369F (530F), 500N (520N) & 600N: Instruments-Electrical-Avionics10/15/2016
Maintenance Manuals
NameRevisionLangSubjectDate
36 reiss en 900: Servicing and Maintenance03/17/2015
TR 06-005 en 90011/09/2006
12 reiss en 900: Instruments-Electrical-Avionics01/31/2007
TR 12-001 en 369D (500D), 369E (500E), 369F (530F), 369H, 500N (520N), 600N & 900
Miscellaneous Manuals
NameRevisionLangSubjectDate
4 en Shipping Manual: 90010/16/2006
en Corrosion Control Manual: 369D (500D), 369E (500E), 369F (530F) & 369H02/09/1981
revised en Illustrated Optional Accessories & Modification Kit Catalog: 369H11/09/1990
24 en Standard Practice Manual: 90004/15/2016
reiss3 en Structural Repair Manual: 369D (500D), 369E (500E), 369F (530F), 500N (520N) & 600N05/26/2006
Publication Indexes
NameRevisionLangSubjectDate
0.3 en 369H (500C)10/27/2015
en 369H (500C)01/29/2016
1.1 en 369D, 369E, 369FF, 500N, 600N (500D, 500E, 530F Plus, 520N, 600N) 10/15/2016
en 369D, 369E, 369FF, 500N, 600N (500D, 500E, 530F Plus, 520N, 600N) 02/16/2017
0.1 en 90004/15/2016
0.2 en 900 08/30/2016
Service Bulletins
NameRevisionLangSubjectDate
1 en Mandatory Inspection of Lead-Lag Link Attach Nuts07/06/2009
en Mandatory Main Rotor Transmission Accessory Drive Inspection09/26/1997
en Mandatory Input Shaft Coupling Assembly Inspection09/26/1997
1 en Mandatory Tail Rotor Blade, Leading Edge Inspection for Cracks05/03/1999
1 en Mandatory Main Rotor Blade Root End Inspection and Termination Action for Suspect Main Rotor Blades01/23/1998
3 en Mandatory Main Rotor Blade Root End Inspection and Termination Action for Suspect Main Rotor Blades07/13/1998
en Mandatory Oil Cooler Bracket Replacement04/28/1998
en Mandatory Engine Fuel Filter Pressure Switch Replacement02/23/1999
en Mandatory Tail Rotor Fork Inspection, Four-Bladed05/10/1999
en Mandatory Turbine Outlet Temperature (TOT) Wire Harness, One Time Inspection01/11/2000
en Mandatory Landing Gear Strut Inspection and Fairing Modification04/07/2000
1 en Mandatory Main Rotor Blade Assembly Torque Event Inspection07/24/2001
2 en Mandatory Main Rotor Blade Assembly Torque Event Inspection02/04/2004
en Mandatory Main Transmission Bonding Jumper Inspection and Rework08/14/2002
1 en Mandatory Tail Rotor Blade Abrasion Strip Tap Test and Modification01/23/2006
en Mandatory Tail Rotor Blade Assembly, One Time Inspection04/26/2007
en Mandatory Oil Cooler Belt, One Time Inspection05/12/2008
1 en Mandatory Oil Cooler Belt, One Time Inspection03/13/2009
en Mandatory Inspection of P/N 369D292028, Aft Passenger Step Assemblies, on Extended Landing Gear Assemblies02/05/2010
1 en Mandatory Inspection of P/N 369D292028, Aft Passenger Step Assemblies, on Extended Landing Gear Assemblies04/26/2013
en Mandatory Inspection of Short Edge Margin Condition on 369D23500 Tailboom Assembly07/20/2010
en Mandatory Kamatics Shaft and Coupling Overhaul Program12/22/2010
en Mandatory Replacement of Mobil SHC 626 with Mobil AGL07/20/2011
en Mandatory Tail Rotor Blade Assembly Inspection11/21/2011
en Mandatory Upper Main Rotor Pitch Control Rod End, PN 369A1011 Inspection and Replacement01/03/2013
1 en Mandatory Upper Main Rotor Pitch Control Rod End, PN 369A1011 Inspection and Replacement04/16/2013
en Mandatory Main Rotor Hub Lead Lag Link Assembly Inspection and Daily Pre-Flight Check12/26/2012
1 en Mandatory Main Rotor Hub Lead Lag Link Assembly Inspection and Daily Pre-Flight Check04/09/2015
en Mandatory One-Time Inspection of Fuel Pump Harness Routing and Decal Installation04/30/2014
en Mandatory Inspection of the Copilot Gas Producer Control Gear Shaft Assembly08/12/2014
1 en Mandatory Inspection of the Copilot Gas Producer Control Gear Shaft Assembly09/11/2014
2 en Mandatory Inspection of the Copilot Gas Producer Control Gear Shaft Assembly03/30/2015
en Mandatory Exchange of Engine Bay Door Latch Assemblies with Missing Lockwire Hole06/30/2015
1 en Mandatory Exchange of Engine Bay Door Latch Assemblies with Missing Lockwire Hole01/29/2016
en Mandatory Inspection of the Main Rotor Hub Lead-Lag Bolts, Part No. 369D21220-BSC04/19/2019
2 en Mandatory Inspection of Pilot-to-Copilot Tail Rotor Torque Tube03/24/2021
1 en Mandatory Inspection of Lead-Lag Link Attach Nuts07/06/2009
en Mandatory Main Rotor Transmission Accessory Drive Inspection09/26/1997
en Mandatory Input Shaft Coupling Assembly Inspection09/26/1997
1 en Mandatory Tail Rotor Blade, Leading Edge Inspection for Cracks05/03/1999
1 en Mandatory Main Rotor Blade Root End Inspection and Termination Action for Suspect Main Rotor Blades01/23/1998
3 en Mandatory Main Rotor Blade Root End Inspection and Termination Action for Suspect Main Rotor Blades07/13/1998
en Mandatory Oil Cooler Bracket Replacement04/28/1998
1 en Mandatory Socket Contact Assembly Inspection09/25/1998
en Mandatory Engine Fuel Filter Pressure Switch Replacement02/23/1999
en Mandatory Tail Rotor Fork Inspection, Four-Bladed05/10/1999
en Mandatory Turbine Outlet Temperature (TOT) Wire Harness, One Time Inspection01/11/2000
en Mandatory Landing Gear Strut Inspection and Fairing Modification04/07/2000
1 en Mandatory Main Rotor Blade Assembly Torque Event Inspection07/24/2001
2 en Mandatory Main Rotor Blade Assembly Torque Event Inspection02/04/2004
en Mandatory Main Transmission Bonding Jumper Inspection and Rework08/14/2002
1 en Mandatory Tail Rotor Blade Abrasion Strip Tap Test and Modification01/23/2006
en Mandatory One Time Inspection of the Oil Cooler Blower, Drive Pulley Installation03/28/2007
en Mandatory Tail Rotor Blade Assembly, One Time Inspection04/23/2007
en Mandatory Oil Cooler Belt, One Time Inspection05/12/2008
1 en Mandatory Oil Cooler Belt, One Time Inspection03/13/2009
en Mandatory Inspection of P/N 369D292028, Aft Passenger Step Assemblies, on Extended Landing Gear Assemblies02/05/2010
1 en Mandatory Inspection of P/N 369D292028, Aft Passenger Step Assemblies, on Extended Landing Gear Assemblies04/26/2013
en Mandatory Inspection of Short Edge Margin Condition on 369D23500 Tailboom Assembly07/20/2010
en Mandatory Kamatics Shaft and Coupling Overhaul Program12/22/2010
en Mandatory Replacement of Mobil SHC 626 with Mobil AGL07/20/2011
en Mandatory Tail Rotor Blade Assembly Inspection11/21/2011
en Mandatory Upper Main Rotor Pitch Control Rod End, PN 369A1011 Inspection and Replacement01/03/2013
1 en Mandatory Upper Main Rotor Pitch Control Rod End, PN 369A1011 Inspection and Replacement04/16/2013
en Mandatory Main Rotor Hub Lead Lag Link Assembly Inspection and Daily Pre-Flight Check12/26/2012
1 en Mandatory Main Rotor Hub Lead Lag Link Assembly Inspection and Daily Pre-Flight Check04/09/2015
en Mandatory Aft Position and Anti-Collision Light Mounting - Inspection, Replacement and Repair05/14/2013
1 en Mandatory Aft Position and Anti-Collision Light Mounting - Inspection, Replacement and Repair05/05/2015
en Mandatory Removable (Copilot) Gas Producer Control Collective Stick Tube Assembly Torsion Bar, PN 369H7841-5 Replacement10/04/2013
en Mandatory Inspection of the Copilot Gas Producer Control Gear Shaft Assembly08/12/2014
1 en Mandatory Inspection of the Copilot Gas Producer Control Gear Shaft Assembly09/11/2014
2 en Mandatory Inspection of the Copilot Gas Producer Control Gear Shaft Assembly03/30/2015
en Mandatory One-Time Inspection of Fuel Pump Harness Routing and Decal Installation04/30/2014
en Mandatory Exchange of Engine Bay Door Latch Assemblies with Missing Lockwire Hole06/30/2015
1 en Mandatory Exchange of Engine Bay Door Latch Assemblies with Missing Lockwire Hole01/29/2016
en Mandatory Drill Drain Holes for Antenna Installations03/04/2016
en Mandatory Inspection of the Main Rotor Hub Lead-Lag Bolts, Part No. 369D21220-BSC04/19/2019
2 en Mandatory Inspection of Pilot-to-Copilot Tail Rotor Torque Tube03/24/2021
1 en Mandatory Inspection of Lead-Lag Link Attach Nuts07/06/2009
en Mandatory Main Rotor Transmission Accessory Drive Inspection09/26/1997
en Mandatory Input Shaft Coupling Assembly Inspection09/26/1997
1 en Mandatory Tail Rotor Blade, Leading Edge Inspection for Cracks05/03/1999
1 en Mandatory Main Rotor Blade Root End Inspection and Termination Action for Suspect Main Rotor Blades01/23/1998
3 en Mandatory Main Rotor Blade Root End Inspection and Termination Action for Suspect Main Rotor Blades07/13/1998
en Mandatory Oil Cooler Bracket Replacement04/28/1998
1 en Mandatory Socket Contact Assembly Inspection09/25/1998
en Mandatory Landing Gear Strut Inspection and Fairing Modification04/07/2000
1 en Mandatory Main Rotor Blade Assembly Torque Event Inspection07/24/2001
2 en Mandatory Main Rotor Blade Assembly Torque Event Inspection02/04/2004
en Mandatory Main Transmission Bonding Jumper Inspection and Rework08/14/2002
en Mandatory Minimum N1 Starting Speed Decal/Placard Installation07/22/2003
1 en Mandatory Tail Rotor Blade Abrasion Strip Tap Test and Modification01/23/2006
en Mandatory One Time Inspection of the Oil Cooler Blower, Drive Pulley Installation03/28/2007
en Mandatory Tail Rotor Blade Assembly, One Time Inspection04/26/2007
en Mandatory Oil Cooler Belt, One Time Inspection05/12/2008
1 en Mandatory Oil Cooler Belt, One Time Inspection03/13/2009
en Mandatory Inspection of P/N 369D292028, Aft Passenger Step Assemblies, on Extended Landing Gear Assemblies02/05/2010
1 en Mandatory Inspection of P/N 369D292028, Aft Passenger Step Assemblies, on Extended Landing Gear Assemblies04/26/2013
en Mandatory Inspection of Short Edge Margin Condition on 369D23500 Tailboom Assembly07/20/2010
en Mandatory Kamatics Shaft and Coupling Overhaul Program12/22/2010
en Mandatory Replacement of Mobil SHC 626 with Mobil AGL07/20/2011
en Mandatory Tail Rotor Blade Assembly Inspection11/21/2011
en Mandatory Upper Main Rotor Pitch Control Rod End, PN 369A1011 Inspection and Replacement01/03/2013
1 en Mandatory Upper Main Rotor Pitch Control Rod End, PN 369A1011 Inspection and Replacement04/16/2013
en Mandatory Main Rotor Hub Lead Lag Link Assembly Inspection and Daily Pre-Flight Check12/26/2012
1 en Mandatory Main Rotor Hub Lead Lag Link Assembly Inspection and Daily Pre-Flight Check04/09/2015
en Mandatory Aft Position and Anti-Collision Light Mounting - Inspection, Replacement and Repair05/14/2013
1 en Mandatory Aft Position and Anti-Collision Light Mounting - Inspection, Replacement and Repair05/05/2015
en Mandatory Removable (Copilot) Gas Producer Control Collective Stick Tube Assembly Torsion Bar, PN 369H7841-5 Replacement10/04/2013
en Mandatory Inspection of the Copilot Gas Producer Control Gear Shaft Assembly08/12/2014
1 en Mandatory Inspection of the Copilot Gas Producer Control Gear Shaft Assembly09/11/2014
2 en Mandatory Inspection of the Copilot Gas Producer Control Gear Shaft Assembly03/30/2015
en Mandatory Engine Oil Hose Inspection and Replacement04/04/2014
en Mandatory One-Time Inspection of Fuel Pump Harness Routing and Decal Installation04/30/2014
en Mandatory Installation of the Tail Rotor Drive Shaft and Secondary Dampener Bushings01/07/2015
en Mandatory Exchange of Engine Bay Door Latch Assemblies with Missing Lockwire Hole06/30/2015
1 en Mandatory Exchange of Engine Bay Door Latch Assemblies with Missing Lockwire Hole01/29/2016
en Mandatory Drill Drain Holes for Antenna Installations03/04/2016
en Mandatory Inspection of the Main Rotor Hub Lead-Lag Bolts, Part No. 369D21220-BSC04/19/2019
2 en Mandatory Inspection of Pilot-to-Copilot Tail Rotor Torque Tube03/24/2021
en Mandatory One-Time Inspection of the Generator Control Unit and 200-AMP Starter/Generator Wiring02/14/2011
en Mandatory Field Replacement of Lock Fittings - Ground Handling Wheel Assemblies, PN 369A9905 (AER-BEA PN AB2387)08/10/1976
1 en Mandatory Inspection of Lead-Lag Link Attach Nuts07/06/2009
en Mandatory Input Shaft Coupling Assembly Inspection09/26/1997
1 en Mandatory Tail Rotor Blade, Leading Edge Inspection for Cracks05/03/1999
1 en Mandatory Main Rotor Blade Root End Inspection and Termination Action for Suspect Main Rotor Blades01/23/1998
3 en Mandatory Main Rotor Blade Root End Inspection and Termination Action for Suspect Main Rotor Blades07/13/1998
en Mandatory Landing Gear Strut Inspection and Fairing Modification04/07/2000
1 en Mandatory Main Rotor Blade Assembly Torque Event Inspection07/24/2001
2 en Mandatory Main Rotor Blade Assembly Torque Event Inspection02/04/2004
1 en Mandatory Tail Rotor Blade Abrasion Strip Tap Test and Modification01/23/2006
en Mandatory Tail Rotor Blade Assembly, One Time Inspection04/26/2007
en Mandatory Oil Cooler Belt, One Time Inspection05/12/2008
1 en Mandatory Oil Cooler Belt, One Time Inspection03/13/2009
en Mandatory Kamatics Shaft and Coupling Overhaul Program12/22/2010
en Mandatory Replacement of Mobil SHC 626 with Mobil AGL07/20/2011
en Mandatory Tail Rotor Blade Assembly Inspection11/21/2011
en Mandatory Upper Main Rotor Pitch Control Rod End, PN 369A1011 Inspection and Replacement01/03/2013
1 en Mandatory Upper Main Rotor Pitch Control Rod End, PN 369A1011 Inspection and Replacement04/16/2013
en Mandatory Main Rotor Hub Lead Lag Link Assembly Inspection and Daily Pre-Flight Check12/26/2012
1 en Mandatory Main Rotor Hub Lead Lag Link Assembly Inspection and Daily Pre-Flight Check04/09/2015
en Mandatory One-Time Inspection of Fuel Pump Harness Routing and Decal Installation04/30/2014
en Mandatory Exchange of Engine Bay Door Latch Assemblies with Missing Lockwire Hole06/30/2015
1 en Mandatory Exchange of Engine Bay Door Latch Assemblies with Missing Lockwire Hole01/29/2016
en Mandatory Inspection of the Main Rotor Hub Lead-Lag Bolts, Part No. 369D21220-BSC04/19/2019
2 en Mandatory Inspection of Pilot-to-Copilot Tail Rotor Torque Tube03/24/2021
en Mandatory Main Rotor Transmission Accessory Drive Inspection09/26/1997
en Mandatory Input Shaft Coupling Assembly Inspection09/26/1997
1 en Mandatory Main Rotor Blade Root End Inspection and Termination Action for Suspect Main Rotor Blades01/23/1998
3 en Mandatory Main Rotor Blade Root End Inspection and Termination Action for Suspect Main Rotor Blades07/13/1998
en Mandatory Oil Cooler Bracket Replacement04/28/1998
1 en Mandatory Socket Contact Assembly Inspection09/25/1998
en Mandatory Engine Fuel Filter Pressure Switch Replacement02/23/1999
en Mandatory Turbine Outlet Temperature (TOT) Wire Harness, One Time Inspection01/11/2000
2 en Mandatory Forward and Center Thruster Control Cables, Conduit Cap Relief Area, Inspection ((AMOC))04/24/2000
en Mandatory Forward and Center Thruster Control Cables, Conduit Cap at Telescopic Swivel End, Inspection11/19/1999
en Mandatory Landing Gear Strut Inspection and Fairing Modification04/07/2000
1 en Mandatory Main Rotor Blade Assembly Torque Event Inspection07/24/2001
2 en Mandatory Main Rotor Blade Assembly Torque Event Inspection02/04/2004
en Mandatory Fan Pitch Control Aft Tube Assembly One Time Inspection10/23/2001
en Mandatory Main Transmission Bonding Jumper Inspection and Rework08/14/2002
en Mandatory Tailboom Assembly Overlap Inspection and Rework11/23/2006
en Mandatory Forward and Center Thruster Control Cable Assemblies Connector One Time Inspection05/03/2004
en Mandatory One Time Inspection of the Oil Cooler Blower, Drive Pulley Installation03/28/2007
1 en Mandatory Notar Fan Tension-Torsion (TT) Strap Replacement03/14/2008
2 en Mandatory Notar Fan Tension-Torsion (TT) Strap Replacement05/06/2008
3 en Mandatory Notar Fan Tension-Torsion (TT) Strap Replacement07/09/2008
en Mandatory Oil Cooler Belt, One Time Inspection05/12/2008
1 en Mandatory Oil Cooler Belt, One Time Inspection03/13/2009
en Mandatory De-Energize YSAS System and Replace YSAS Adapter08/15/2008
1 en Mandatory De-Energize YSAS System and Replace YSAS Adapter08/27/2008
en Mandatory Inspection of Lead-lag Link Attach Nuts07/06/2009
en Mandatory Inspection of P/N 369D292028, Aft Passenger Step Assemblies, on Extended Landing Gear Assemblies02/05/2010
1 en Mandatory Inspection of P/N 369D292028, Aft Passenger Step Assemblies, on Extended Landing Gear Assemblies04/26/2013
en Mandatory Kamatics Shaft and Coupling Overhaul Program12/22/2010
en Mandatory Replacement of Mobil SHC 626 with Mobil AGL07/20/2011
en Mandatory Rotating Cone Assembly Inspection07/09/2012
en Mandatory Main Rotor Hub Lead Lag Link Assembly Inspection and Daily Pre-Flight Check12/26/2012
1 en Mandatory Main Rotor Hub Lead Lag Link Assembly Inspection and Daily Pre-Flight Check04/09/2015
en Mandatory Upper Main Rotor Pitch Control Rod End, PN 369A1011 Inspection and Replacement01/03/2013
1 en Mandatory Upper Main Rotor Pitch Control Rod End, PN 369A1011 Inspection and Replacement04/16/2013
en Mandatory One-Time Inspection of Fuel Pump Harness Routing and Decal Installation04/30/2014
en Mandatory Inspection of the Copilot Gas Producer Control Gear Shaft Assembly08/12/2014
1 en Mandatory Inspection of the Copilot Gas Producer Control Gear Shaft Assembly09/11/2014
2 en Mandatory Inspection of the Copilot Gas Producer Control Gear Shaft Assembly03/30/2015
en Mandatory Remove and Replace the YSAS Adapter02/19/2015
1 en Mandatory Remove and Replace the YSAS Adapter01/14/2016
en Mandatory Exchange of Engine Bay Door Latch Assemblies with Missing Lockwire Hole06/30/2015
1 en Mandatory Exchange of Engine Bay Door Latch Assemblies with Missing Lockwire Hole01/29/2016
en Mandatory Drill Drain Holes for Antenna Installations03/04/2016
en Mandatory Inspection of the Main Rotor Hub Lead-Lag Bolts, Part No. 369D21220-BSC04/19/2019
2 en Mandatory Inspection of Pilot-to-Copilot Tail Rotor Torque Tube03/24/2021
en Mandatory Engine Cooling Improvement09/12/1997
en Mandatory Main Rotor Transmission Accessory Drive Inspection09/26/1997
en Mandatory Input Shaft Coupling Assembly Inspection09/26/1997
en Mandatory Cabin Seat Restraint Assembly Replacement02/12/1998
en Mandatory Installation of Revised VNE Cards03/04/1998
en Mandatory Thruster Tip Cap Removal12/08/1997
en Mandatory Main Rotor Blade Root End Inspection and Termination Action for Suspect Main Rotor Blades01/23/1998
2 en Mandatory Main Rotor Blade Root End Inspection and Termination Action for Suspect Main Rotor Blades07/13/1998
en Mandatory Generator Control Unit (GCU) Replacement02/19/1998
en Mandatory Collective Controls Life Reductions and Serializations02/24/1998
en Mandatory Landing Gear Fairing Modification04/28/1998
en Mandatory Cyclic Control Mixer Links Replacement (Eight Degree Phase Shift Recovery)05/05/1998
en Mandatory Oil Cooler Bracket Replacement04/28/1998
1 en Mandatory Low Fuel Level Warning Light04/15/1999
1 en Mandatory Socket Contact Assembly Inspection09/25/1998
en Mandatory Engine Fuel Control Box Attachment Bolt Replacement04/23/1999
1 en Mandatory Audio Warning System Modification09/18/2000
en Mandatory FADEC Manual Switch Guard Modification10/06/1998
1 en Mandatory Torque Pressure Transducer High Intensity Radiated Fields (HIRF) Protection Modification02/07/2000
en Mandatory FADEC Wire Harness Stand-Off Installation Inspection and Modification04/23/1999
1 en Mandatory Electromagnetic Compatibility (EMC) Test for Optional Equipment Effects on the Fadec Control02/22/2000
2 en Mandatory Electromagnetic Compatibility (EMC) Test for Optional Equipment Effects on the Fadec Control04/14/2003
1 en Mandatory Inspection/Reidentification/Serialization of Cyclic Control Stick Sockets and Left Hand Command (Co-Pilot) Cyclic Tube03/11/1999
en Mandatory Improved Engine Torque Pressure Transducer04/23/1999
1 en Mandatory Cyclic Stick Replacement07/30/1999
1 en Mandatory Longitudinal Mixer Output Link Assembly Replacement04/06/1999
en Mandatory Fuel System Inspection07/02/1999
en Mandatory Turbine Outlet Temperature (TOT) Wire Harness, One Time Inspection01/11/2000
2 en Mandatory Forward and Center Thruster Control Cables, Conduit Cap Relief Area, Inspection ((AMOC))04/24/2000
en Mandatory Forward and Center Thruster Control Cables, Conduit Cap at Telescopic Swivel End, Inspection11/19/1999
en Mandatory Motive Flow Restrictor Removal01/10/2001
1 en Mandatory Inspection of Vertical Stabilizer and Torque Tube and Replacement of Attaching Hardware05/25/2001
1 en Mandatory Main Rotor Blade Assembly Torque Event Inspection07/24/2001
2 en Mandatory Main Rotor Blade Assembly Torque Event Inspection02/04/2004
en Mandatory Turbine Outlet Temperature (TOT) Indicator Replacement12/13/2001
en Mandatory Main Rotor Drive Shaft Life Reduction12/13/2001
en Mandatory Torque Transducer Electrical Connector One Time Inspection12/13/2001
en Mandatory Fan Pitch Control Aft Tube Assembly One Time Inspection10/23/2001
en Mandatory Tailboom Assembly Attach Fitting One Time Inspection and Repair11/02/2001
en Mandatory Main Transmission Bonding Jumper Inspection and Rework08/14/2002
en Mandatory Exhaust Duct Inspection05/06/2003
en Mandatory Tailboom Assembly Attach Fittings and Upper Longerons Inspection12/09/2003
en Mandatory Control Support Bracket Assembly Life Reduction with YSAS Installed (AMOC)12/19/2003
en Mandatory Tailboom Assembly Overlap Inspection and Rework11/23/2006
en Mandatory Forward and Center Thruster Control Cable Assemblies Connector One Time Inspection05/03/2004
en Mandatory Tailboom Assembly Attach Fitting One Time Inspection, Attach Fitting and Nutplate Replacement04/13/2006
en Mandatory Lateral Mixer Output Link Assembly, One Time Inspection02/16/2007
en Mandatory One Time Inspection of the Oil Cooler Blower, Drive Pulley Installation03/28/2007
1 en Mandatory Notar Fan Tension-Torsion (TT) Strap Replacement03/14/2008
2 en Mandatory Notar Fan Tension-Torsion (TT) Strap Replacement05/06/2008
3 en Mandatory Notar Fan Tension-Torsion (TT) Strap Replacement07/09/2008
en Mandatory De-Energize YSAS System and Replace YSAS Adapter08/15/2008
1 en Mandatory De-Energize YSAS System and Replace YSAS Adapter08/27/2008
en Mandatory Governor Electronic Control Unit (ECU) Replacement03/16/2009
1 en Mandatory Governor Electronic Control Unit (ECU) Replacement03/03/2010
en Mandatory Inspection of Lead-Lag Link Attach Nuts07/06/2009
en Mandatory Kamatics Shaft and Coupling Overhaul Program12/22/2010
en Mandatory Replacement of Mobil SHC 626 with Mobil AGL07/20/2011
en Mandatory Rotating Cone Assembly Inspection07/09/2012
en Mandatory One-Time Inspection of the Horizontal Stabilizer Torque Tubes and the Landing Gear Struts12/31/2012
en Mandatory Upper Main Rotor Pitch Control Rod End, PN 369A1011 Inspection and Replacement01/03/2013
1 en Mandatory Upper Main Rotor Pitch Control Rod End, PN 369A1011 Inspection and Replacement04/16/2013
en Mandatory Main Rotor Hub Lead Lag Link Assembly Inspection and Daily Pre-Flight Check12/26/2012
1 en Mandatory Main Rotor Hub Lead Lag Link Assembly Inspection and Daily Pre-Flight Check04/09/2015
en Mandatory One-Time Inspection of the Pilot Gas Producer Control Gear Shaft Assembly04/30/2014
1 en Mandatory One-Time Inspection of the Pilot Gas Producer Control Gear Shaft Assembly08/12/2014
en Mandatory Engine Oil Hose Inspection and Replacement04/04/2014
en Mandatory Inspection of the Copilot Gas Producer Control Gear Shaft Assembly08/12/2014
1 en Mandatory Inspection of the Copilot Gas Producer Control Gear Shaft Assembly09/11/2014
2 en Mandatory Inspection of the Copilot Gas Producer Control Gear Shaft Assembly03/30/2015
en Mandatory Remove and Replace the YSAS Adapter02/19/2015
1 en Mandatory Remove and Replace the YSAS Adapter01/14/2016
en Mandatory Exchange of Engine Bay Door Latch Assemblies with Missing Lockwire Hole06/30/2015
1 en Mandatory Exchange of Engine Bay Door Latch Assemblies with Missing Lockwire Hole01/29/2016
en Mandatory Drill Drain Holes for Antenna Installations03/04/2016
en Mandatory Inspection of the Main Rotor Hub Lead-Lag Bolts, Part No. 369D21220-BSC04/19/2019
2 en Mandatory Inspection of Pilot-to-Copilot Tail Rotor Torque Tube03/24/2021
5 en Mandatory Flexbeam Inspection08/27/1999
1 en Mandatory Copilot Collective Stick Removal Restriction12/22/1995
1 en Mandatory Anti-Torque Directional Control Actuator Replacement01/29/1996
en Mandatory Replacement of Generator Control Units (GCUs)07/19/1995
en Mandatory Application of Collective Control Index Mark07/19/1995
1 en Mandatory Service Instruction for Cockpit and Cabin Door Modifications Removals/Modifications/Installations ((Mod MD9009500008))12/14/1995
en Mandatory Forward Fuel Vent Modification ((Mod MD9009500001))12/14/1995
en Mandatory Heater Limitation Placard Installation12/14/1995
en Mandatory Fuel Metering Unit (FMU) Manual Mode Deceleration Check02/14/1996
en Mandatory Vent Air Scoop Installation02/05/1996
1 en Mandatory Condenser Scoop Installation07/12/1997
en Mandatory Torque Verification of Blade Retention Bolts01/12/1996
en Mandatory Cabin Door D-Ring Replacement02/23/1996
en Mandatory Aft Cabin Heat Modification05/24/1996
2 en Mandatory Aft Cabin Heat Modification and Guard Installation12/28/1996
2 en Mandatory Battery Warm Disable Relay Installation and Fuel Quantity Power Moved to Essential Bus (Modify A610 Panel from 900E2750610-107 to -113)12/16/1996
1 en Mandatory Lateral Anti-Torque - Drive Link Assembly Replacement05/24/1996
en Mandatory Pitot Tube Replacement03/12/1996
1 en Mandatory High Puncture-Resistant Fuel Cell Modifications (Fuel Boost Pump Flanges and Rollover Valves) ((Mod MD9009500013))07/01/1996
1 en Mandatory Endplate Spar Tube (Vertical Stabilizer) Greasing Procedure01/03/1997
en Mandatory VNE Card and Support Installation05/09/1996
en Mandatory Thruster Rotating Cone/Control Bearings Modifications04/25/1996
en Mandatory Electronic Engine Control (EEC) Replacement04/22/1996
en Mandatory Ignition Circuit Breaker Replacement05/09/1996
en Mandatory Link Assembly, Drive - Scissors, One-Time Inspection04/09/1996
en Mandatory Rigging Inspection of VSCS Linkage05/09/1996
1 en Mandatory Swashplate Bearing, One-Time Inspection05/04/1996
en Mandatory Notar Fan Diffuser Retention Fastener Inspection09/06/1996
1 en Mandatory Swashplate Bearing Installation Preload, One-Time Inspection05/22/1996
1 en Mandatory Swashplate Modification, Inner Retainer Plate Replacement07/01/1996
en Mandatory Swashplate Bearing Outer Race Preload, Inspection and Modification Bearing Replacement06/05/1996
en Mandatory Main Rotor Blade Life Limit Increase06/19/1996
2 en Mandatory Main Rotor Swashplate Bearing Removal From Service11/19/1996
1 en Mandatory Forward Interconnect Panel Modification; Landing Light Circuit Breaker Relocation; Rotor Brake Circuit Breaker Removal11/19/1996
2 en Mandatory B.F. Goodrich Trim Servo 300 Hour Inspection09/20/1999
en Mandatory Condenser Fan EMI Filter Installation08/12/1996
en Mandatory Main Rotor Hub Retention Bolt Torque Verification08/30/1996
2 en Mandatory VSCS Bellcrank and Mid-Aft Strut Serialization03/12/1997
en Mandatory Cockpit and Cabin Door Housing Replacement10/29/1996
3 en Mandatory Manual Engine Start Electrical Modification07/12/1997
4 en Mandatory Manual Engine Start Electrical Modification10/14/2002
3 en Mandatory Hydraulic Manifold/Reservoir Rework02/12/1998
1 en Mandatory Flight Controls Life Limit Changes01/16/1997
1 en Mandatory Swashplate Spherical Bearing, Self Aligning12/17/1996
2 en Mandatory IIDS Battery Discharge Indication Correction04/04/1997
1 en Mandatory Horizontal Stabilizer Drain Holes02/26/1997
en Mandatory VSCS Synchronization Modification01/30/1997
1 en Mandatory Gradient Spring Assemblies Replacement01/09/1998
en Mandatory Main Transmission Retrofit02/21/1997
en Mandatory Operating Temperature Limitation Placard Modification04/18/1997
en Mandatory Main Rotor Drive Plate Mounting Bolt Inspection04/18/1997
en Mandatory Cargo Hook Shorting Plug Installation05/12/1997
en Mandatory Cabin Door Ajar Switch Bracket Rework04/11/1997
1 en Mandatory Off Gate Diode Installation Modification08/08/1997
1 en Mandatory Adjustable Collective Drive Link Replacement06/05/1997
en Mandatory Grounding Notice for all MD900 Helicopters05/28/1997
en Mandatory Self Aligning Spherical/Slider Bearing Life Limit Reduction06/05/1997
1 en Mandatory Life Limit on Anti-Torque Fan Assembly, Tension-Torsion Straps and Pitch Plate Assembly07/06/1998
2 en Mandatory Life Limit on Anti-Torque Fan Assembly, Tension-Torsion Straps and Pitch Plate Assembly05/10/1999
en Mandatory Gradient Springs Rod End Bearing Inspection01/19/1998
en Mandatory Cabin Entry/Egress Step Modification07/23/1997
1 en Mandatory Cockpit Door Lower Rod Modification07/07/2000
1 en Mandatory Main Rotor Driveshaft Assembly Life Limitation12/16/1999
en Mandatory Mechanical Engine Control System Modification05/15/1998
en Mandatory Pedal Plate Inspection, Directional Controls06/18/1998
en Mandatory Main Rotor Hub Inspection06/09/1998
1 en Mandatory Inspection of Cabin Door Windows with Nordam Sliding Window Installed08/12/1999
en Mandatory MD900 Electromagnetic Compatibility (EMC) Test02/19/1999
1 en Mandatory MD900 Electromagnetic Compatibility (EMC) Test04/14/2003
1 en Mandatory Right VSCS Actuator Inboard Rod End Thread Engagement Inspection07/08/1999
1 en Mandatory A612 Forward Interconnect Panel Modification04/24/2000
en Mandatory Takeoff Go/No-Go Timer Light Modification04/24/2000
en Mandatory Non-Rotating Swashplate Assembly Bushing Rework and Longitudinal Drive Link Assembly Inspection and Repair01/10/2000
en Mandatory Main Rotor Hub Inspection and Torque Check ((AMOC))12/10/1999
1 en Mandatory Main Rotor Hub Inspection and Torque Check ((AMOC))07/16/2012
en Mandatory Cargo Hook Installation and Aft Saddle Assemblies - Inspection and Replacement of Aft Saddle Assemblies06/28/2000
1 en Mandatory Cargo Hook Installation and Aft Saddle Assemblies - Inspection and Replacement of Aft Saddle Assemblies08/30/2016
en Mandatory Naca Support Assembly Replacement and Inspection/Rework of NACA Inlet Assembly08/30/2000
en Mandatory Electrical Load Center Inspection and Rework08/04/2000
1 en Mandatory Inspection and Rework of Main Rotor Support Static Mast12/04/2000
en Mandatory Inspection and Rework of Aft Deck Splitter Attachment Structure12/04/2000
en Mandatory Non-Rotating Swashplate Assembly Bushing Rework and Longitudinal Drive Link Assembly Inspection and Repair04/23/2001
1 en Mandatory Mechanical Engine Controls - One Time Inspection and Replacement of Pilot and Copilot Collective Sticks03/19/2002
en Mandatory Fuel Contamination Inspection05/15/2001
1 en Mandatory Integrated Instrument Display System (IIDS) Replacement11/08/2001
en Mandatory Integrated Instrument Display System (IIDS) Gen Light Wiring Modification11/08/2001
2 en Mandatory Integrated Instrument Display System (IIDS) Gen Light Wiring Modification06/10/2003
en Mandatory Integrated Instrument Display System (IIDS) Eec Light Wiring Modification11/08/2001
2 en Mandatory Integrated Instrument Display System (IIDS) Eec Light Wiring Modification09/15/2006
en Mandatory Life Limit and Serialization of Lateral Mixer Bellcrank Assemblies12/03/2001
en Mandatory Engine Oil Breather Hose Replacement02/13/2002
en Mandatory Modified Empennage Bellcrank Assembly Reidentification06/17/2002
en Mandatory Main Rotor Transmission Assembly Upgrade08/20/2002
1 en Mandatory Main Rotor Transmission Assembly Upgrade12/27/2011
en Mandatory Integrated Instrument Display System (IIDS) Test08/14/2002
1 en Mandatory Main Rotor Support Static Mast, One Time Inspection10/22/2002
en Mandatory Pilot's Collective Stick Floor Access Cover Rework12/18/2002
en Mandatory Cabin Floor Attach Points Inspection and Rework05/06/2003
en Mandatory Main Rotor Blade Retention Bolt Inspection06/20/2003
1 en Mandatory Main Rotor Blade Retention Bolt Inspection06/30/2003
2 en Mandatory Main Rotor Blade Retention Bolt Inspection09/02/2004
en Mandatory Main Rotor Drive Plate Nut Torque Check and Torque Increase09/08/2003
en Mandatory Fan Input Force Limiting Control Rod Assembly, Fail-Safe Device Installation and Pilot's Daily Check03/17/2004
en Mandatory Tension-Torsion Strap Inspection11/03/2004
en Mandatory Swashplate Spherical Slider Bearing (900C3010042-103) Life Limit Reduction02/28/2005
en Mandatory Bonded Keel/Tub Modification06/06/2005
en Mandatory Fuel Probe Label Replacement10/19/2005
1 en Mandatory Thruster Extension and Vortex Generator Installation12/27/2006
1 en Mandatory Thruster Extension and Vortex Generator Installation
en Mandatory Directional Pedal Assembly Modification04/05/2006
en Mandatory Drive Ring Assembly One Time Inspection and Rework04/21/2006
1 en Mandatory Drive Ring Assembly One Time Inspection and Rework02/01/2008
1 en Mandatory Increased Gross Weight Capability to 6500 lbs with VNE Card and LH Middle Aft Truss Assembly Replacement12/27/2006
en Mandatory Upper Deck Control Rod Installation One Time Inspection11/05/2007
en Mandatory Main Rotor Hub Damper Inspection and Replacement08/06/2007
en Mandatory Rotating Swashplate Life Limit Change and Better Helicopter Performance03/06/2008
en Mandatory Forward Directional Control Cable Installation and Rotating Cone Control Rod, One Time Inspection12/20/2007
1 en Mandatory Notar Fan Tension-Torsion (TT) Strap Replacement03/14/2008
1 en Mandatory Forward Directional Control Cable and Rotating Cone Control Rod Installation Modification08/13/2008
en Mandatory De-Energize VSCS System and Replace VSCS Tube Adapters08/15/2008
1 en Mandatory De-Energize VSCS System and Replace VSCS Tube Adapters08/22/2008
en Mandatory Operational Restrictions Concerning VSCS Tube Adapters10/17/2008
1 en Mandatory Operational Restrictions Concerning VSCS Tube Adapters12/03/2008
en Mandatory Horizontal Endplate (Vertical Stabilizer) Installation04/11/2009
en Mandatory Main Rotor Upper Hub and Drive Plate Inspection04/24/2009
en Mandatory One-Time Inspection of Oil Out Hoses09/04/2009
en Mandatory One-Time Inspection of Fuel Cell Cord Routing11/17/2009
en Mandatory 300-Hour Inspection for the Main Rotor Blade Retention Bolts02/24/2010
1 en Mandatory 300-Hour Inspection for the Main Rotor Blade Retention Bolts04/09/2010
en Mandatory Eddy Current Inspection of the Main Rotor Lower Hub Assembly01/14/2011
1 en Mandatory Eddy Current Inspection of the Main Rotor Lower Hub Assembly05/20/2014
en Mandatory Replacement of Mobil SHC 626 with Mobil AGL07/20/2011
1 en Mandatory Replacement of Mobil SHC 626 with Mobil AGL12/13/2011
en Mandatory One-Time Inspection of Landing Gear Crosstubes10/01/2012
en Mandatory One-Time Replacement of the Carrier Support in the Transmission Assembly07/26/2013
en Mandatory Load Check Procedure for Goodrich Hoist Overload Clutches10/22/2013
en Mandatory One-Time Eddy Current Inspection of the Main Rotor Upper Hub Assembly04/08/2014
en Mandatory Periodic Inspections of the Aft and Forward Crosstubes06/23/2014
en Mandatory Inspection of the Flexbeam Boltholes in the Main Rotor Upper Hub Assembly02/19/2016
en Mandatory Inspection of Tail Rotor Output Shaft: Installation of Protective Dust Boots03/23/1977
en Mandatory Main Rotor Controls - Rigging of Cyclic and Collective Controls; Rework of Mixer Controls; Installation of Pitch Housing Striker Plate Support Nut08/30/1977
en Mandatory Main Rotor Pitch Control Rod Assembly - Replacement of PN 369A1009-3 Pitch Rod and Inspection of Rod End Bearings08/30/1977
en Mandatory Installation of PN DN21808 Support Ring - Tail Rotor Stationary Boot, PN 369D2180608/30/1977
2 en Mandatory Overrunning Clutch Assembly, PN 369A5350-603 Rework and Inspection of PN 369A5350-11 Clutch Subassembly and PN 369A5361 Ball Bearing; Periodic Inspection of PN 369A5350-21 Clutch Subassembly10/27/1978
en Mandatory Modification of PN 369A4516-3 N1 Tach Indicator10/03/1977
en Mandatory Inspection - PN 369H90085 Litter Door Installation11/30/1977
en Mandatory Modification Kit - Main Transmission Lubrication Pump, PN 369D2516712/15/1977
en Mandatory Engine Compressor Water Wash Kit Installation, PN 369H92537 - Inspection and Replacement of Rivets04/14/1978
en Mandatory Rework of Standard Landing Gear Skid Assembly, PN 369D26100-101; Rework of Extended Landing Gear Skid Assembly, PN 369D292114-10106/06/1978
en Mandatory Sealing - Vertical Stabilizer Assembly, PN 369D23600, 369D23600-50106/26/1978
2 en Mandatory Installation of Standoff Clamps - Heating System Hose and Main Rotor Transmission Oil Cooling Lines09/05/1979
1 en Mandatory Rework of Fuselage Structure; Forward Section03/07/1980
en Mandatory Inspection and Possible Replacement -- Seat Belt Assemblies PN 369H6541-5 and 369H6541-2107/15/1978
1 en Mandatory Inspection and Rework of Tail Rotor Hub, PN 369A1725-5 and 369A1725-501; Inspection of Tail Rotor Blade Attachment Bolts; PN MS21250-0604012/08/1978
en Mandatory Installation of New PN 369D21012 Rubber Washers - Attachment of Pitch Control Rods to Main Rotor Swashplate Assembly09/08/1978
en Mandatory Replacement - PN 369D28309 Hose Assembly, Engine Oil Cooler to Engine Oil Tank10/17/1978
en Mandatory PN 369D21800 Tail Rotor Pitch Control Assembly - Seating of Dual Bearing Inner Races: Torque Increase for PN 369D21803-3 Locknut12/01/1978
en Mandatory PN 369H7825 Droop Control Bellcrank Assembly (Station 68.0) - Relocation of Locknut and Installation of Spacer02/15/1979
1 en Mandatory PN 369D23601 Horizontal Stabilizer Assembly - Adjustment or Replacement of PN 369D23678-3 Trailing Edge Tabs; Relocation of PN 369H6610-5 Static Pressure Tube06/22/1979
2 en Mandatory PN 369D21400-501 Main Rotor Lead-Lag Elastomeric Damper Assembly - Internal Modification and Reidentification10/22/1979
en Mandatory Field Rigging Check - PN 369A8013-503 Heater Control Valve Assembly04/16/1979
en Mandatory Inspection and Repair - Station 142 Tail Rotor Control Bellcrank Supports, PN 369A3035-11 and 369A3035-1506/11/1979
8 en Mandatory Inspection of Main Rotor Blade Root Fitting Assemblies; Inspection of Main Rotor Hub Lead-Lag Link Assemblies01/03/2000
2 en Mandatory Kit Installation, PN 369D290140-501 - Auxiliary Fairings and Seals, Engine Air Filter (Particle Separator)09/15/1980
1 en Mandatory Inspection - Collective Torque Tube Support Bracket (PN 369A7304 Magnesium, PN 369N2608 Aluminum and Collective Bungee Support Bracket (PN 369A7339 Magnesium, PN 369N2650 Aluminum)03/07/1980
2 en Mandatory Inspection and Repair of Aft Fuselage Skin Cracks; Installation of Doublers on Boom Fairing Lower Longerons05/11/1981
en Mandatory Filter Gasket -- Engine Air Inlet (Particle Separator) Filter Kit Installation, PN 369H90148-503, -505 and -50703/03/1980
en Mandatory Inspection and Rework of Tail Rotor Transmission Housing Assembly, PN 369D2540103/03/1980
en Mandatory Horizontal Stabilizer Assembly -- Adding Drain Holes and Sealing Doubler Edges03/03/1980
1 en Mandatory Rework of Cooling Blower Mounting Bracket12/19/1980
en Mandatory Rework of PN 369D290125-21 Mist Eliminator Assembly - Engine Air Inlet Filter (Particle Separator) Assembly, PN 369H90148-507 and 369H90148-50905/16/1980
1 en Mandatory Relocation of Tail Rotor Bungee Spring Forward Attachment; Tail Rotor Force Adjustment12/08/1980
en Mandatory Polarity Check of Diode Assemblies06/30/1980
en Mandatory Identification and Possible Rework of Seat Belt and Shoulder Harness Assemblies07/11/1980
en Mandatory Wiring Modification - Utility Light Circuit and Transmission Oil Pressure and Temperature Warning Light Circuit09/30/1980
en Mandatory Periodic Inspections and Bonding Procedure - Tail Rotor Drive Fork Elastomeric Teeter Bearings, PN 369A172408/22/1980
1 en Mandatory Inspection of PN 369A7003-3 Swashplate Bearing07/28/1981
en Mandatory Sealing of Interfaces of Abrasion Strip and Main Rotor Blade Skin01/30/1981
en Mandatory Replacement of Tavco PN 23111369 Solenoid Valve, Float Inflation System - Emergency Float Assemblies, Hughes PN 369D290121-501 and 369D290121-50503/20/1981
1 en Mandatory Inspection of Overrunning Clutch Sprag Assembly05/10/1983
en Mandatory Field Inspection and Repair of Tail Rotor Gear Box Main Housing Assembly, PN 369D25301 or 369D25401-304/15/1981
en Mandatory Shimming Procedure for Gas Producer Interconnecting Torque Tube Assembly05/06/1981
en Mandatory Replacement of PN 369A7706-3 RPM Governor Lever Control Rod05/15/1981
en Mandatory Elimination of Possible Interference of Safety Wire with Oil Cooler Blower Drive Belt05/19/1981
1 en Mandatory Inspection of Main Rotor Hub Strap Pack Retention Bolts and Replacement of Bushings07/22/1981
en Mandatory Corrosion Inspection/Treatment-One-Way Lock Support Assembly, P/N 369A7314 and 369N264806/04/1981
en Mandatory Inspection/Modification of Breeze Corporation Inc. Hoist, PN BL-16600-1206/18/1981
en Mandatory Deactivation of Main Rotor Brake System (if Installed); Periodic Inspection of Tail Rotor Drive Shaft Forward Flexible Coupling, PN 369A5501 or PN 369H9256406/25/1981
en Mandatory Installation of Failsafe Device at Tail Rotor Drive Shaft Forward Flexible Coupling, PN 369A5501 or PN 369H92564; Check of Flexible Couplings08/07/1981
en Mandatory One-Time Inspection - Attachment Hardware for Sta-Strap Securing Electric Wiring to Boom Fairing at Sta 138.5008/21/1981
en Mandatory Main Rotor Brake System, PN 369H90123 Series Installation of Master Cylinder Stop, PN 369D29258510/05/1981
en Mandatory Periodic Inspection of Main Rotor Drive Shaft, PN 369D2551011/30/1981
en Mandatory Inspection of PN 369A7006-5 Tail Rotor Control Rod; Rework of PN 369D290128-11 Particle Separator Fairing Assembly and PN 369D290128-31 Cover Assembly02/01/1982
en Mandatory Instrument Cluster 3-Pack Conversion - AC to Rochester03/05/1982
en Mandatory Installation of Fuselage Attach Points (PN 369H90070-211/212 Subassemblies) for Accessory Kit Attach Fittings07/01/1982
en Mandatory Replacement of Intercom (ICS) Switch and Jack Assembly07/01/1982
1 en Mandatory Inspection and Modification of PN 369D292028, Aft Passenger Step Assemblies, on Extended Landing Gear Assemblies; and Inspection and Modification of Aft Landing Gear Foot Assemblies10/27/1989
en Mandatory New Shimming Procedure for Tail Rotor. Drive Shaft Forward Flexible Coupling, PN 369A5501 or 369H92564, with Failsafe Device Installed09/27/1982
en Mandatory Inspection - Landing Gear Struts and Feet11/19/1982
en Mandatory Relocation of Engine Air Inlet Filter Bypass Door Aft Pulley (PN 369A8448) and Bracket (PN 369A8447), and Particle Separator Filter (PN 369H90152-3 or 369D290125-11) Gasket Inspection01/10/1983
en Mandatory Main Rotor Transmission Drain Line Bracketry Modification02/15/1983
en Mandatory Pilot's Compartment, Center Passenger Seat Lap Belt Installation Check; Preflight Check of Passenger Lap Belt and Shoulder Strap Adjustment02/15/1983
en Mandatory Installation of 510 OHM Resistor in PN 369D296303, 369D296303-701 and 369A4245 Series Fuel Quantity Sending Units03/20/1983
en Mandatory Fuel Vent System Hose (PN 369A8131-19) Inspection05/02/1983
1 en Mandatory Installation of Collective Stick Support Bracket Reinforcement Strap11/23/1983
en Mandatory Button Plug Installation - Mast Support Structure, Aft Channel06/27/1983
en Mandatory Inspection and Overhaul of Fuel Shutoff Valve (PN 369A8104-5)07/29/1983
en Mandatory Battery Case and Main DC Power Wiring Inspection10/28/1983
en Mandatory Main Transmission Oil Line (PN 369D25709 and 369D25710) Inspection; and Replacement of Main Transmission Oil Lines (PN 369D25709 and 369D25710) and Bracketry with New PN 369D25709-11 and 369D25710-11 Lines and Bracketry11/10/1983
en Mandatory Main Rotor Swashplate Bearing, PN 369A7003-3, Inspection and Possible Replacement12/23/1983
en Mandatory Fuel Shut-Off Valve Control Cable (PN 369A8137-503 and -603) Pull Test04/10/1984
en Mandatory Removal of Gray Coating From PN 369D21700 and 369D21700-3 Tail Rotor Hubs06/12/1984
en Mandatory Riveting Tip-Cap to Tail Rotor Blade08/27/1984
2 en Mandatory Inspection of Tail Rotor Blade Leading Edge Abrasion Strip Bonding03/23/1987
1 en Mandatory Corrosion Removal and Magnetic Rubber Inspection of Main Rotor Drive Shaft I.D.10/30/1987
1 en Mandatory Riveting Tip-Cap to Tail Rotor Blade05/01/1985
en Mandatory Cancellation of Warranty03/18/1985
en Mandatory Non-Airworthy Clutch Assemblies03/18/1985
en Mandatory Exit Warning Decal PN 369D2404308/07/1985
en Mandatory Replacement of Main Rotor Cooling Installation Bracket from 369D25701-3 to 369D25701-1108/07/1985
en Mandatory Tail Rotor Bellcrank Inspection - P/N 369D27514 & 369D2751512/20/1985
en Mandatory Fargo Auxiliary Fuel Tanks PN - A1066-108201/10/1986
1 en Mandatory Cooling Fan Pulleys PN 369D25620, 369D25622, 369D25622-3 and 369D25624 Inspection03/18/1986
en Mandatory Removal of Seat Belt Assemblies Manufactured by the Eon Corporation05/15/1986
en Mandatory United Instruments, Inc. Altimeters (MDHC Part No. 369D24174, 369H4505 and 369H90124)05/20/1986
1 en Mandatory Installation of Failsafe Device at Tail Rotor Drive Shaft Aft Flexible Coupling, P/N 369A5501 or 369H2564: and Inspection of Flexible Couplings11/28/1986
en Cancelled Shimming of Elastomeric Tail Rotor Bearings02/22/2000
en Mandatory Fabrication and Installation of 369D25704 Oil Flexline Hose Assemblies in the Main Transmission Oil Cooling Installation04/09/1987
1 en Mandatory Daily Preflight Examination of Main Rotor Blade Leading Edge Abrasion Strip Bonding09/10/1992
1 en Mandatory One-Time Inspection of Main Transmission Tail Rotor Output Drive Pinion Shaft (P/N 369D25125-BSC and 369D25125-11)10/30/1987
1 en Mandatory Inspection of Main Transmission Output Shaft Assembly Ring Gear Carrier (PN 369D25132-BSC or -5)10/30/1987
en Mandatory 369A8010 Engine Oil Pressure and Torque Tubing Pull Test09/15/1987
en Mandatory Start Pump Wire Routing and Fuel Quantity Sender Inspection09/15/1987
en Mandatory Inspection of Tail Rotor Transmission Mounting Studs10/10/1987
en Mandatory Replacement of 369A8442 - Basic Latch Assembly on the Particle Separator Bypass Door12/18/1987
2 en Mandatory One-Time Inspection and Replacement of Tail Rotor Fork Bolt (369A1602)04/21/1989
en Mandatory Main Rotor Hub Assembly Strap Pack Lamination Inspection and Tri-Flow Wash Procedure of the Main Rotor Hub Assembly and Strap Pack Laminates01/15/1988
en Mandatory Main Rotor Blade Upper and Lower Trailing Edge Weight Rework01/15/1988
2 en Mandatory Overrunning Clutch Outer Race Inspection04/11/1997
en Mandatory One-Time Inspection of the Engine to Transmission Driveshaft Coupling - 369H566004/05/1989
1 en Mandatory Inspection and Rework of Main and Tail Rotor Control Tubes (PNs 369A7007, 389A7009, 369A7011 and 369A7012)07/21/1989
en Mandatory One-Time Inspection of 369A8352, 369H8306, 369H8025, 369H8024-5 and 369D28651 Aeroquip Hoses06/12/1989
en Mandatory One-Time Inspection of Four-Bladed Tail Rotor Hubs (PN 369D21700-3)06/19/1989
en Mandatory One-Time Inspection of 369D25420 Tail Rotor Transmission Output Shaft Duplex Bearings07/10/1989
en Mandatory One-Time Inspection of Emergency and Utility Float Skid Tube Extension Assemblies06/30/1989
en Mandatory One-Time Inspection of 369A5358 Lockwasher in the Overrunning Clutch Assembly and Inspection of Engine Output Drive Splines10/27/1989
1 en Mandatory Conversion to 369A5350-41 Overrunning Clutch Sub-Assemblies05/04/1990
en Mandatory Installation of Oil Flow Restricting Devices into the Engine Oil and Torque Pressure Sensing Systems10/27/1989
1 en Mandatory One-Time Inspection and Replacement of Air Industries MS21250-04036 Bolts and Verification of Proper Installation of all MS21250-04036 Bolts in Main Transmission03/14/1990
en Mandatory One-Time Check/Periodic Inspection/Replacement of Tail Rotor Swashplate Bearing Set03/14/1990
en Mandatory One-Time Replacement of Polycarbonate Cover Assemblies (369A9817)06/15/1990
en Mandatory One Time Replacement of Tail Rotor Blade Pitch Arm Bolt Attaching Nuts06/15/1990
1 en Mandatory One Time Torque Check and Inspection of Main Rotor Blades05/15/1991
1 en Mandatory One Time Inspection of 369D25623 Oil Cooler Blower Belt11/21/1990
1 en Mandatory One-Time Installation of 369D24054-3 Warning Decals in the Engine Compartment Area09/04/1990
en Mandatory Inspection of Lead-Lag Link Attach Nuts09/04/1990
en Mandatory Inspection of T/R Input Gearshaft (P/N 369D25434) in the T/R Gearbox11/21/1990
en Mandatory One-Time Inspection of 369H8407 Engine Bleed Air Tube Flexible Area11/21/1990
en Mandatory One Time Reinstallation of the 369A1602-3 Tail Rotor Fork Bolt11/21/1990
1 en Mandatory Pre-Flight Check and One-Time Inspection of Tail Rotor Blades03/01/1991
en Mandatory One-Time Rework of Main Rotor Transmission Oil Cooling Fan Mounting Bracket02/01/1991
en Mandatory One-Time Addition of Rivets to Tail Rotor Abrasion Strip09/27/1991
en Mandatory Inspection of Overrunning Clutch Outer Race01/17/1992
1 en Mandatory Inspection/Rework of Fuel Vent System09/10/1992
en Mandatory One-Time Inspection/Rework of Engine Air Inlet Area03/02/1992
2 en Mandatory Main Rotor Blade Replacement01/27/1993
en Mandatory Four-Way Trim Switch Replacement Program03/10/1994
en Mandatory Lockwasher Inspection09/23/1994
en Mandatory Firewall Fuel Fitting Modification09/26/1994
en Mandatory Tail Rotor Blade Abrasion Strip Modification10/26/1994
en Mandatory Main Rotor Blade Root End Inspection10/27/1995
en Mandatory Main Rotor Transmission Component Inspection (369D25127-11)01/10/1997
en Mandatory Overrunning Clutch Inspection07/25/1997
en Mandatory Inspection of Overrunning Clutch Sprag Assembly04/29/1983
en Mandatory Periodic Inspection of Main Rotor Drive Shaft, PN 369D2551004/29/1983
en Mandatory Pilot's Compartment, Center Passenger Seat Lap Belt Installation Check; Preflight Check of Passenger Lap Belt and Shoulder Strap Adjustment02/15/1983
en Mandatory Fuel Vent System Hose (PN 369A8131-19) Inspection05/02/1983
en Mandatory Inspection and Overhaul of Fuel Shutoff Valve (PN 369A8104-5)07/29/1983
en Mandatory Main Transmission Oil Line (PN 369D25709 and 369D25710) Inspection; and Replacement of Main Transmission Oil Lines (PN 369D25709 and 369D25710) and Bracketry with New PN 369D25709-11 and 369D25710-11 Lines and Bracketry11/10/1983
en Mandatory Installation of Collective Stick Support Bracket Reinforcement Strap11/23/1983
en Mandatory Main Rotor Swashplate Bearing, PN 369A7003-3, Inspection and Possible Replacement12/23/1983
1 en Mandatory Inspection, PN 369A7011 Longitudinal Mixer Control Rod; Replacement of PN 369D22509-51 Doubler with 369DSK169-3 Repair Doubler06/01/1984
en Mandatory Fuel Shut-Off Valve Control Cable (PN 369A8137-503 and -603) Pull Test04/10/1984
en Mandatory Removal of Gray Coating From PN 369D21700 and 369D21700-3 Tail Rotor Hubs06/10/1984
en Mandatory Alternation of Crew Compartment Seat Back Assemblies06/13/1984
en Mandatory Riveting Tip-Cap to Tail Rotor Blade08/27/1984
2 en Mandatory Inspection of Tail Rotor Blade Leading Edge Abrasion Strip Bonding03/23/1987
1 en Mandatory Corrosion Removal and Magnetic Rubber Inspection of Main Rotor Drive Shaft I.D.10/30/1987
1 en Mandatory Riveting Tip-Cap to Tail Rotor Blade05/01/1985
en Mandatory Cancellation of Warranty03/18/1985
en Mandatory Non-Airworthy Clutch Assemblies03/18/1985
en Mandatory Replacement of Main Rotor Cooling Installation Bracket from 369D25701-3 to 369D25701-1108/07/1985
en Mandatory Tail Rotor Bellcrank Inspection - P/N 369D27514 & 369D2751512/20/1985
en Mandatory Fargo Auxiliary Fuel Tanks PN - A1066-108201/10/1986
1 en Mandatory Cooling Fan Pulleys PN 369D25620, 369D25622, 369D25622-3 and 369D25624 Inspection03/18/1986
en Mandatory Removal of Seat Belt Assemblies Manufactured by the Eon Corporation05/15/1986
en Mandatory United Instruments, Inc. Altimeters (MDHC Part No. 369D24174, 369H4505 and 369H90124)05/20/1986
1 en Mandatory Installation of Failsafe Device at Tail Rotor Drive Shaft Aft Flexible Coupling, P/N 369A5501 or 369H2564: and Inspection of Flexible Couplings11/28/1986
en Cancelled Shimming of Elastomeric Tail Rotor Bearings02/22/2000
en Mandatory Fabrication and Installation of 369D25704 Oil Flexline Hose Assemblies in the Main Transmission Oil Cooling Installation04/09/1985
1 en Mandatory Daily Preflight Examination of Main Rotor Blade Leading Edge Abrasion Strip Bonding09/10/1992
1 en Mandatory One-Time Inspection of Main Transmission Tail Rotor Output Drive Pinion Shaft (P/N 369D25125-BSC and 369D25125-11)10/30/1987
1 en Mandatory Inspection of Main Transmission Output Shaft Assembly Ring Gear Carrier (PN 369D25132-BSC or -5)10/30/1987
en Mandatory 369A8010 Engine Oil Pressure and Torque Tubing Pull Test09/15/1987
en Mandatory Start Pump Wire Routing and Fuel Quantity Sender Inspection09/15/1987
en Mandatory Inspection of Tail Rotor Transmission Mounting Studs10/10/1987
1 en Mandatory Rework of Horizontal Stabilizer Assembly (P/N 421-087-503 and -505)04/07/1989
en Mandatory Replacement of 369A8442 - Basic Latch Assembly on the Particle Separator Bypass Door12/18/1987
6 en Mandatory Inspection of Main Rotor Blade Root Fitting Assemblies; Inspection of Main Rotor Hub Lead-Lag Link Assemblies01/03/2000
2 en Mandatory One-Time Inspection and Replacement of Tail Rotor Fork Bolt (369A1602)04/21/1989
en Mandatory Main Rotor Hub Assembly Strap Pack Lamination Inspection and Tri-Flow Wash Procedure of the Main Rotor Hub Assembly and Strap Pack Laminates01/15/1988
en Mandatory Main Rotor Blade Upper and Lower Trailing Edge Weight Rework01/15/1988
2 en Mandatory Overrunning Clutch Outer Race Inspection04/11/1997
en Mandatory One-Time Inspection of the Engine to Transmission Driveshaft Coupling - 369H566004/15/1989
1 en Mandatory Inspection and Rework of Main and Tail Rotor Control Tubes (PNs 369A7007, 389A7009, 369A7011 and 369A7012)07/21/1989
en Mandatory One-Time Inspection of 369A8352, 369H8306, 369H8025, 369H8024-5 and 369D28651 Aeroquip Hoses06/12/1989
en Mandatory One-Time Inspection of Four-Bladed Tail Rotor Hubs (PN 369D21700-3)06/19/1989
en Mandatory One-Time Inspection of 369D25420 Tail Rotor Transmission Output Shaft Duplex Bearings07/10/1989
en Mandatory One-Time Inspection of Emergency and Utility Float Skid Tube Extension Assemblies06/30/1989
en Mandatory One-Time Inspection of 369A5358 Lockwasher in the Overrunning Clutch Assembly and Inspection of Engine Output Drive Splines10/27/1989
1 en Mandatory Conversion to 369A5350-41 Overrunning Clutch Sub-Assemblies05/04/1990
en Mandatory Installation of Oil Flow Restricting Devices into the Engine Oil and Torque Pressure Sensing Systems10/27/1989
en Mandatory Inspection and Modification of PN 369d292028, Aft Passenger Step Assemblies, on Extended Landing Gear Assemblies; and Inspection and Modification of Aft Landing Gear Foot Assemblies10/27/1989
1 en Mandatory One-Time Inspection and Replacement of Air Industries MS21250-04036 Bolts and Verification of Proper Installation of all MS21250-04036 Bolts in Main Transmission03/14/1990
en Mandatory One-Time Check/Periodic Inspection/Replacement of Tail Rotor Swashplate Bearing Set03/14/1990
en Mandatory One-Time Replacement of Polycarbonate Cover Assemblies (369A9817)06/15/1990
en Mandatory One Time Replacement of Tail Rotor Blade Pitch Arm Bolt Attaching Nuts06/15/1990
1 en Mandatory One Time Torque Check and Inspection of Main Rotor Blades05/15/1991
1 en Mandatory One Time Inspection of 369D25623 Oil Cooler Blower Belt11/21/1990
1 en Mandatory One-Time Installation of 369D24054-3 Warning Decals in the Engine Compartment Area09/04/1990
en Mandatory Inspection of Lead-Lag Link Attach Nuts09/04/1990
en Mandatory Inspection of T/R Input Gearshaft (P/N 369D25434) in the T/R Gearbox11/21/1990
en Mandatory One-Time Inspection of 369H8407 Engine Bleed Air Tube Flexible Area11/21/1990
en Mandatory One Time Reinstallation of the 369A1602-3 Tail Rotor Fork Bolt11/21/1990
1 en Mandatory Pre-Flight Check and One-Time Inspection of Tail Rotor Blades03/01/1991
en Mandatory One-Time Rework of Main Rotor Transmission Oil Cooling Fan Mounting Bracket02/01/1991
en Mandatory One-Time Addition of Rivets to Tail Rotor Abrasion Strip09/27/1991
en Mandatory One-Time Replacement of Diodes with Transzorbs12/19/1991
en Mandatory Inspection of Overrunning Clutch Outer Race01/17/1992
1 en Mandatory Inspection/Rework of Fuel Vent System09/10/1992
en Mandatory One-Time Inspection/Rework of Engine Air Inlet Area03/20/1992
2 en Mandatory Main Rotor Blade Replacement01/27/1993
en Mandatory Fuel Pressure Switch Inspection (P/N 369D28144-1)05/20/1992
en Mandatory Four-Way Trim Switch Replacement Program03/10/1994
en Mandatory Lockwasher Inspection09/23/1994
en Mandatory Firewall Fuel Fitting Modification09/26/1994
en Mandatory Tail Rotor Blade Abrasion Strip Modification10/26/1994
en Mandatory Main Rotor Blade Root End Inspection10/27/1995
en Mandatory Main Rotor Transmission Component Inspection (369D25127-11)01/10/1997
en Mandatory Overrunning Clutch Inspection07/25/1997
en Mandatory Inspection of Overrunning Clutch Sprag Assembly07/29/1983
en Mandatory Periodic Inspection of Main Rotor Drive Shaft, PN 369D2551007/29/1983
en Mandatory Disarming N2 Electronic Overspeed Control System12/09/1983
en Mandatory Alternation of Crew Compartment Seat Back Assemblies06/13/1984
1 en Mandatory Corrosion Removal and Magnetic Rubber Inspection of Main Rotor Drive Shaft I.D.10/30/1987
1 en Mandatory Riveting Tip-Cap to Tail Rotor Blade05/01/1985
en Mandatory Cancellation of Warranty03/18/1985
en Mandatory Non-Airworthy Clutch Assemblies03/18/1985
en Mandatory Replacement of Main Rotor Cooling Installation Bracket from 369D25701-3 to 369D25701-1108/07/1985
en Mandatory Tail Rotor Bellcrank Inspection - P/N 369D27514 & 369D2751512/20/1985
en Mandatory Fargo Auxiliary Fuel Tanks PN - A1066-108201/10/1986
1 en Mandatory Cooling Fan Pulleys PN 369D25620, 369D25622, 369D25622-3 and 369D25624 Inspection03/18/1986
1 en Mandatory Inspection of Tail Rotor Blade Leading Edge Abrasion Strip Bonding03/23/1987
en Mandatory Removal of Seat Belt Assemblies Manufactured by the Eon Corporation05/15/1986
en Mandatory United Instruments, Inc. Altimeters (MDHC Part No. 369D24174, 369H4505 and 369H90124)05/20/1986
en Cancelled Shimming of Elastomeric Tail Rotor Bearings02/22/2000
en Mandatory Fabrication and Installation of 369D25704 Oil Flexline Hose Assemblies in the Main Transmission Oil Cooling Installation04/09/1985
1 en Mandatory Daily Preflight Examination of Main Rotor Blade Leading Edge Abrasion Strip Bonding09/10/1992
1 en Mandatory One-Time Inspection of Main Transmission Tail Rotor Output Drive Pinion Shaft (P/N 369D25125-BSC and 369D25125-11)10/30/1987
1 en Mandatory Inspection of Main Transmission Output Shaft Assembly Ring Gear Carrier (PN 369D25132-BSC or -5)10/30/1987
en Mandatory 369A8010 Engine Oil Pressure and Torque Tubing Pull Test09/15/1987
en Mandatory Start Pump Wire Routing and Fuel Quantity Sender Inspection09/15/1987
en Mandatory Inspection of Tail Rotor Transmission Mounting Studs10/10/1987
1 en Mandatory Rework of Horizontal Stabilizer Assembly (P/N 421-087-503 and -505)04/07/1989
en Mandatory Replacement of 369A8442 - Basic Latch Assembly on the Particle Separator Bypass Door12/18/1987
6 en Mandatory Inspection of Main Rotor Blade Root Fitting Assemblies; Inspection of Main Rotor Hub Lead-Lag Link Assemblies01/03/2000
2 en Mandatory One-Time Inspection and Replacement of Tail Rotor Fork Bolt (369A1602)04/21/1989
en Mandatory Main Rotor Hub Assembly Strap Pack Lamination Inspection and Tri-Flow Wash Procedure of the Main Rotor Hub Assembly and Strap Pack Laminates01/15/1988
2 en Mandatory Overrunning Clutch Outer Race Inspection04/11/1997
en Mandatory One-Time Inspection of the Engine to Transmission Driveshaft Coupling - 369H566004/05/1989
1 en Mandatory Inspection and Rework of Main and Tail Rotor Control Tubes (PNs 369A7007, 389A7009, 369A7011 and 369A7012)07/21/1989
en Mandatory One-Time Inspection of 369A8352, 369H8306, 369H8025, 369H8024-5 and 369D28651 Aeroquip Hoses06/12/1989
en Mandatory One-Time Inspection of 369D25420 Tail Rotor Transmission Output Shaft Duplex Bearings07/10/1989
en Mandatory One-Time Rework of 250-C30 Lower Aft Engine Mount Installation06/20/1989
en Mandatory One-Time Inspection of Emergency and Utility Float Skid Tube Extension Assemblies06/30/1989
en Mandatory One-Time Inspection of 369A5358 Lockwasher in the Overrunning Clutch Assembly and Inspection of Engine Output Drive Splines10/27/1989
en Mandatory Inspection and Modification of PN 369d292028, Aft Passenger Step Assemblies, on Extended Landing Gear Assemblies; and Inspection and Modification of Aft Landing Gear Foot Assemblies10/27/1989
en Mandatory Installation of Oil Flow Restricting Devices into the Engine Oil and Torque Pressure Sensing Systems10/27/1989
1 en Mandatory Conversion to 369A5350-41 Overrunning Clutch Sub-Assemblies05/04/1990
1 en Mandatory One-Time Inspection and Replacement of Air Industries MS21250-04036 Bolts and Verification of Proper Installation of all MS21250-04036 Bolts in Main Transmission03/14/1990
en Mandatory One-Time Check/Periodic Inspection/Replacement of Tail Rotor Swashplate Bearing Set03/14/1990
en Mandatory One-Time Replacement of Polycarbonate Cover Assemblies (369A9817)06/15/1990
en Mandatory One Time Replacement of Tail Rotor Blade Pitch Arm Bolt Attaching Nuts06/15/1990
1 en Mandatory One Time Torque Check and Inspection of Main Rotor Blades05/15/1991
1 en Mandatory One Time Inspection of 369D25623 Oil Cooler Blower Belt11/21/1990
1 en Mandatory One-Time Installation of 369D24054-3 Warning Decals in the Engine Compartment Area09/04/1990
en Mandatory Inspection of Lead-Lag Link Attach Nuts09/04/1990
en Mandatory Inspection of T/R Input Gearshaft (P/N 369D25434) in the T/R Gearbox11/21/1990
en Mandatory One Time Reinstallation of the 369A1602-3 Tail Rotor Fork Bolt11/21/1990
1 en Mandatory Pre-Flight Check and One-Time Inspection of Tail Rotor Blades03/01/1991
en Mandatory One-Time Rework of Main Rotor Transmission Oil Cooling Fan Mounting Bracket02/01/1991
en Mandatory One-Time Addition of Rivets to Tail Rotor Abrasion Strip09/27/1991
en Mandatory One-Time Replacement of Diodes with Transzorbs12/19/1991
en Mandatory Inspection of Overrunning Clutch Outer Race01/17/1992
1 en Mandatory Inspection/Rework of Fuel Vent System09/10/1992
en Mandatory One-Time Inspection/Rework of Engine Air Inlet Area03/20/1992
2 en Mandatory Main Rotor Blade Replacement01/27/1993
en Mandatory Four-Way Trim Switch Replacement Program03/10/1994
en Mandatory Lockwasher Inspection09/23/1994
en Mandatory Firewall Fuel Fitting Modification09/26/1994
en Mandatory Tail Rotor Blade Abrasion Strip Modification10/26/1994
en Mandatory Main Rotor Blade Root End Inspection10/27/1995
en Mandatory Tail Rotor Control Rod Replacement11/22/1996
en Mandatory Main Rotor Transmission Component Inspection (369D25127-11)01/10/1997
en Mandatory Overrunning Clutch Inspection07/25/1997
1 en Mandatory Inspection - Tail Rotor Transmission Assembly, P/N 369A540010/27/1969
1 en Mandatory Inspection - Tail Rotor Transmission Assembly, P/N 369A540010/27/1969
en Mandatory Inspection and Possible Retirement Main Rotor Blades P/N 369A 1100-50111/19/1969
en Mandatory M30223 Kit Installation - Main Rotor Locknut and Retaining Ring12/08/1969
en Mandatory Kit Installation (M30209) - Engine Fuel Filter Pressure Switch04/21/1970
en Mandatory Modification for Doors - Off Flight - Canopy Upper Windshield Assemblies, P/N 369A2405-3 and 369A2405-409/11/1970
1 en Mandatory Kit Installation (M50027) - Modification, Transmission and Coupling Fan Assembly03/01/1971
1 en Mandatory Modification Kit (M50438) - Trim Potentiometer, Engine Oil Pressure Gage06/16/1971
en Mandatory Rework - Engine Oil Cooler Fan Assembly P/N 369H806208/12/1971
en Mandatory New Pressure-Actuated Switch - Automatic Engine Reignition Kit Installation, P/N 369H90118-501 or P/N 369H9014008/23/1971
1 en Mandatory Inspection - Tail Rotor Transmission Output Bevel Gearshaft12/13/1971
en Mandatory Installation - New VNE Placards02/29/1972
en Mandatory Modification - Mechanical Release System, Cargo Hook Kit Installation, PN 369H9006504/10/1972
en Mandatory Modification and Alignment Check - Rotor Brake Installation05/01/1972
en Mandatory Inspection and Shimming - Cabin Heater Control Valve Assembly05/31/1972
1 en Mandatory 369A5400 Series Tail Rotor Gearbox - Revised Overhaul Schedule (TBO) and Component Finite Life (Input Gear Shaft Assembly)08/07/1972
en Mandatory Inspection - Landing Gear Damper (Poppet Type) Assembly PN 369H6340 and PN 369H9213110/23/1972
en Mandatory Inspection and Repair - Adjustable Upper Engine Mount Assemblies, PN 369H8016-1 and - 204/26/1976
en Mandatory Engine Air Particle Separator Filter Assembly Kit Installation, PN 369H90148 Basic and -501 Configurations - Installation of New Aft Screen Assembly, PN 369H9015705/10/1976
en Mandatory Relocation - Outside Air Temperature (OAT) Indicator, PN 369H4515 (Modification Kit No. M30301)06/18/1976
en Mandatory Potting of N2 Governor Control Switch, PN 369A4580 - Pilot and Copilot Collective Pitch Stick Assemblies06/18/1976
en Mandatory Inspection - Tail Rotor Pitch Control Link Assemblies, PN 369A1807 Basic and 369A1807-506/18/1976
3 en Mandatory Inspection of 369A2001-601 Shock-Mounted Stabilizer Strut Assembly and Possible Replacement of 369A2130 Damper Plunger12/24/1976
2 en Mandatory Rework of PN 369A7120 Longitudinal Friction Guide Link, Cyclic Pitch Control Installation09/12/1977
en Mandatory Inspection - Attachment Hardware, ~ Rotor Pitch Control Rods To Pitch Housing Assembly12/24/1976
en Mandatory 100-Hour Inspection - Main Rotor Hub Lead-Lag Links, PN 369A1234, 369A1234-7, 80-369H1234; and Lead-Lag Link Assembly, PN 369H120312/24/1976
en Mandatory Inspection - Tall Rotor Drive Shaft Damper, PN 369A550612/24/1976
1 en Mandatory Inspection of PN 369A3511-15 and 369A3511-17 Tailboom Bracket Assemblies, Tail Rotor Transmission Attachment09/12/1977
en Mandatory Replacement of Tavco PN 23111357 Solenoid Valve, Float Inflation System - Emergency Float Assemblies, Hughes PN 369H92036-1 and 369H92036-204/15/1977
en Mandatory Wiring Modification Kit (M50450) - Automatic Engine Reignition Kit Installation, PN 369H90118-505, -507, -509 and -51108/08/1977
en Mandatory Inspection and Modification of Oil Cooler Duct, PN 369H8301 or 710108 (Kit PN M50451)07/22/1977
2 en Mandatory Overrunning Clutch Assembly, PN 369A5350-603 - Rework Inspection of PN 369A5350-11 Clutch Subassembly and PN 369A5361 Ball Bearing Periodic Inspection of PN 369A5350-21 Clutch Subassembly10/27/1978
en Mandatory Inspection - PN 369H90085 Litter Door Installation11/30/1977
en Mandatory Engine Compressor Water Wash Kit Installation, PN 369H23537 - Inspection and Replacement of Rivets04/14/1978
1 en Mandatory Inspection and Rework of Tail Rotor Hub, PN 369A1725 and 369A1725-5; Inspection of Tail Rotor Blade Attachment Bolts, PN MS21250-0604012/08/1978
en Mandatory New Periodic Inspection Intervals - Battery Overtemperature Warning System01/10/1979
1 en Mandatory Replacement of PN 369A1602 Tail Rotor Drive Fork Hinge Bolt and PN 369A1603 Nut; New Assembly Procedure for Tail Rotor Hub and Drive Fork Unit; Periodic Check of Flapping Hinge Bolt Preload09/02/1980
en Mandatory Field Rigging Check - PN 369A8013 Series and PN 369A8051 Series Heater Control Valve Assembly04/16/1979
en Mandatory PN 369A1800 Series and PN 369H1800 Tail Rotor Pitch Control Assembly - Seating of Bearing Inner Race; Torque Increase for PN 369A1817 Locknut11/26/1979
en Mandatory Removal of Filter Gasket - Engine Air Inlet (Particle Separator) Filter Kit Installation, PN 369H90148 and 369H90148-50103/03/1980
en Mandatory Polarity Check of Diode Assemblies06/30/1980
en Mandatory Identification and Possible Rework of Seat Belt and Shoulder Harness Assemblies07/11/1980
en Mandatory Wiring Modification - Utility Light Circuit and Transmission Oil Pressure and Temperature Warning Light Circuit09/30/1980
1 en Mandatory Inspection of PN 369A7003-3 Swashplate Bearing09/14/1981
en Mandatory Sealing of Interfaces of Abrasion Strip and Main Rotor Blade Skin01/30/1981
1 en Mandatory Inspection of Overrunning Clutch Sprag Assembly05/10/1983
en Mandatory Field Inspection and Repair of Tail Rotor Transmission Main Housing Assembly, PN 369A540104/15/1981
en Mandatory Shimming Procedure for Gas Producer Interconnecting Torque Tube Assembly05/04/1981
en Mandatory Special Inspection of PN 369A7003-3 Swashplate Bearing Assembly05/06/1981
en Mandatory Replacement of PN 369A7706-3 RPM Governor Lever Rod05/15/1981
en Mandatory Corrosion Inspection/Treatment - One-Way Lock Support Assembly, P/N 369A7314 and 369N264806/04/1981
en Mandatory Inspection/Modification of Breeze Corporation Inc. Hoist, PN BL-16600-1206/18/1981
en Mandatory Inspection and Torque Requirements for Scroll Mounted Bleed Air Fittings07/21/1981
en Mandatory - Deactivation of Main Rotor Brake System (if Installed): Periodic Inspection of Tail Rotor Drive Shaft Forward Flexible Coupling, PN 369A5501 or PN 369H92564 - Installation of Failsafe Device at Tail Rotor Drive Shaft Forward Flexible Coupling, PN 369A5501 or PN 369H92564; Check of Flexible Couplings11/02/1981
en Mandatory Main Rotor Brake System, PN 369H90123 Series - Installation of Master Cylinder Stop, PN 369D29258508/28/1981
en Mandatory Inspection of PN 369A1200 Series Main Rotor Hub Assembly Inspection of PN 369A1220 Main Rotor Blade Lead-Lag Pivot Bolt (Vertical Hinge Pin)01/04/1982
en Mandatory Instrument Cluster 3-Pack Conversion - AC to Rochester02/15/1982
en Mandatory Replacement of Intercom (ICS) Switch and Jack Assembly07/01/1982
en Mandatory New Shimming Procedure for Tail Rotor Drive Shaft Forward Flexible Coupling, PN 369A5501 or 369H92564, with Failsafe Device Installed10/12/1982
en Mandatory Replacement of Float Inflation System Solenoid Valves with Squib Valves - PN 369H90121 Series Emergency Float Assemblies01/10/1983
en Mandatory Relocation of Engine Air Inlet Filter Bypass Door Aft Pulley (PN 369A8448) and Bracket (PN 369A8447), and Particle Separator Filter (PN 369H90152-3) Gasket Inspection01/10/1983
en Mandatory Pilot's Compartment Center Passenger Seat Lap Belt Installation Check; Preflight Check of Passenger Lap Belt and Shoulder Adjustment02/15/1983
en Mandatory Fuel System Servicing, Maintenance and Testing03/15/1983
en Mandatory Fuel Vent System Hose (PN 369A8131-19) Inspection05/02/1983
1 en Mandatory Installation of Collective Stick Support Bracket Reinforcement Strap11/23/1983
1 en Mandatory Inspection and Overhaul of Fuel Shutoff Valve (PN 369A8104-3 or 369A8104-5)08/20/1984
en Mandatory Battery Case Inspection10/28/1983
en Mandatory Instrument Cluster 4-Pack Conversion AC to Rochester02/15/1984
en Mandatory Fuel Shut-Off Valve Control Cable (PN 369A8137-503 and -603) Pull Test04/10/1984
en Mandatory Riveting Tip-Cap to Tail Rotor Blade08/27/1984
2 en Mandatory Inspection of Tail Rotor Blade Leading Edge Abrasion Strip Bonding03/23/1987
1 en Mandatory Corrosion Removal and Magnetic Rubber Inspection of Main Rotor Drive Shaft I.D.10/30/1987
1 en Mandatory Riveting Tip-Cap to Tail Rotor Blade05/01/1985
en Mandatory Non-Airworthy Clutch Assemblies03/18/1985
en Mandatory Exit Warning Decal PN 369D2404308/07/1985
en Mandatory Removal of Seat Belt Assemblies Manufactured by the Eon Corporation05/15/1986
en Mandatory United Instruments, Inc. Altimeters (MDHC Part No. 369D24174, 369H4505 and 369H90124)05/20/1986
1 en Mandatory Installation of Failsafe Device at Tail Rotor Drive Shaft Aft Flexible Coupling, P/N 369A5501 or 369H2564: and Inspection of Flexible Couplings11/28/1986
en Cancelled Shimming of Elastomeric Tail Rotor Bearings02/22/2000
1 en Mandatory Daily Preflight Examination of Main Rotor Blade Leading Edge Abrasion Strip Bonding09/10/1992
en Mandatory 369A8010 Engine Oil Pressure and Torque Tubing Pull Test09/15/1987
en Mandatory Start Pump Wire Routing and Fuel Quantity Sender Inspection09/15/1987
6 en Mandatory Inspection of Main Rotor Blade Root Fitting Assemblies; Inspection of Main Rotor Hub Lead-Lag Link Assemblies01/03/2000
2 en Mandatory One-Time Inspection and Replacement of Tail Rotor Fork Bolt (369A1602)04/21/1989
en Mandatory Replacement of 369A8442 - Basic Latch Assembly on the Particle Separator Bypass Door12/18/1987
en Mandatory Main Rotor Hub Assembly Strap Pack Lamination Inspection and Tri-Flow Wash Procedure of the Main Rotor Hub Assembly and Strap Pack Laminates01/15/1988
2 en Mandatory Overrunning Clutch Outer Race Inspection04/11/1997
en Mandatory One-Time Inspection of the Engine to Transmission Driveshaft Coupling - 369H566004/05/1989
1 en Mandatory Inspection and Rework of Main and Tail Rotor Control Tubes (PNs 369A7007, 389A7009, 369A7011 and 369A7012)07/21/1989
en Mandatory One-Time Inspection of 369A8352, 369H8306, 369H8025, 369H8024-5 and 369D28651 Aeroquip Hoses06/12/1989
en Mandatory Finite Service Life Reduction of the Tail Rotor Tension Torsion Strap Pack Assembly PN 369A1706 (Basic)06/20/1989
en Mandatory One-Time Inspection of 369A5358 Lockwasher in the Overrunning Clutch Assembly and Inspection of Engine Output Drive Splines10/27/1989
en Mandatory Installation of Oil Flow Restricting Devices into the Engine Oil and Torque Pressure Sensing Systems10/27/1989
en Mandatory Conversion to 369A5350-41 Overrunning Clutch Sub-Assemblies05/04/1990
en Mandatory One-Time Replacement of Polycarbonate Cover Assemblies (369A9817)06/15/1990
en Mandatory One-Time Replacement of Tail Rotor Blade Pitch Arm Bolt Attaching Nuts06/15/1990
1 en Mandatory One-Time Torque Check and Inspection of Main Rotor Blades05/15/1991
1 en Mandatory One-Time Installation of 369D24054-3 Warning Decals in the Engine Compartment Area09/04/1990
en Mandatory Inspection of Lead-Lag Link Attach Nuts09/04/1990
en Mandatory One-Time Inspection of 369H8407 Engine Bleed Air Tube Flexible Area11/21/1990
en Mandatory One-Time Reinstallation of the 369A1602-3 Tail Rotor Fork Bolt11/21/1990
1 en Mandatory Pre-Flight Check and One-Time Inspection of Tail Rotor Blades03/01/1991
en Mandatory One-Time Rework of Main Rotor Transmission Oil Cooling Fan Mounting Bracket02/01/1991
en Mandatory One-Time Addition of Rivets to Tail Rotor Abrasion Strip09/27/1991
en Mandatory Inspection of Overrunning Clutch Outer Race01/17/1992
1 en Mandatory Inspection/Rework of Fuel Vent System09/10/1992
en Mandatory One-Time Inspection/Rework of Engine Air Inlet Area03/20/1992
en Mandatory Four-Way Trim Switch Replacement Program03/10/1994
en Mandatory Firewall Fuel Fitting Modification09/26/1994
en Mandatory Tail Rotor Blade Abrasion Strip Modification10/26/1994
en Mandatory Main Rotor Blade Root End Inspection10/27/1995
en Mandatory Rework of Static Port08/26/1992
en Mandatory Daily Preflight Examination of Main Rotor Blade Leading Edge Abrasion Strip Bonding09/10/1992
en Mandatory Rate Gyro Inspection and Replacement01/25/1993
en Mandatory Pilot Preflight Check of Actuator and Replacement of S.A.S. Actuator05/28/1993
en Mandatory Four-Way Trim Switch Replacement Program03/10/1994
en Mandatory Inspection of Tailboom Decal04/10/1994
en Mandatory Firewall Fuel Fitting Modification09/26/1994
en Mandatory Main Rotor Blade Root End Inspection10/27/1995
en Mandatory Main Rotor Transmission Component Inspection (369D25127-11)01/10/1997
en Mandatory Overrunning Clutch Outer Race Inspection04/11/1997
en Mandatory Overrunning Clutch Inspection07/25/1997
Service Information Letters
NameRevisionLangSubjectDate
en Surplus or Bogus 369D21100 Series Main Rotor Blades02/10/1984
en Surplus or Bogus 369D21100 Series Main Rotor Blades02/10/1984
en Surplus or Bogus 369D21100 Series Main Rotor Blades02/10/1984
1 en Bendix Avionics Equipment Repair and Service11/05/1973
1 en Special Wrenches for Field Replacement of Main Rotor Pitch Bearing Studs05/03/1971
en Tail Rotor Swashplate - Cold Weather Operation10/12/1971
en Care and Feeding of Nickel-Cadmium Batteries10/12/1971
1 en Improved Window Glass Retention for Pilot and Passenger Door Assemblies03/24/1972
en Inspection of Nickel-Cadmium Batteries - FAA Airworthiness Directive Note 71-21-512/17/1971
en Breeze BL-16600-11 Hoist Winch Assembly01/10/1972
en Allison 250 Engine - Sales and Service02/07/1972
en Approved Fuel for Allison 250 Series Engine02/14/1972
en New Cargo Hook Attach Plate05/01/1972
en Identification Plates - PN 369A5351 Overrunning Clutch Housing and PN 369A54350-11 Overrunning Clutch Sub-Assembly05/22/1972
en Shut Down Procedure - Allison Model 250-C20 Series Engine06/26/1972
2 en Installation of Surplus Military Parts or Salvaged Used Parts on Model 500 Helicopters02/10/1984
en Cold Weather Torque Adjustment - Main Rotor Damper Assembly, 369A1400, 369A1400-601, 369A1400-60302/09/1973
1 en Special Tools for Installation of Tail Rotor Control Rod Grommets PN WSI-B-12AS06/22/1973
en Corporate Name Change03/01/1973
en Torque Requirement for Driveshaft Coupling Retainer Bolts PN 369A552805/01/1973
en Installation of Steel Washers - Driven Pulley; Belt-Driven Oil Cooler Blower Assembly05/14/1973
en Replacement of Boom Fairing Assembly on First Production Helicopters, SN 0001 thru 010007/12/1973
en Ordering Information - Pilot's Door Assembly PN 369A2002 or 369H2025; Passenger Door Assembly PN 369H2032 or 369H203807/12/1973
1 en Metal Tail Rotor Blades - Replacement for Fiberglass Tail Rotor Blade11/05/1976
en Breeze BL-16600-11 Hoist Winch Assembly - Improper Cable Cutter Installation02/18/1974
en Discussion of Hughes Serial Numbering Method05/31/1974
en Engine Inlet, Air Particle Separator Filter Installation PN 369H90148 Optional Installation Availability07/01/1974
en Inflatable Floats - Service, Maintenance and Repair Facilities08/05/1974
en Extreme Turbine Outlet Temperature Effects on Turbines08/28/1974
en Modification Kit Availably - Torquemeter Bleed Valve PN M50043 and Static Pressure Tube Bleed Valve PN M5043905/05/1975
3 en Main Transmission PN 369A5100-709 Upgraded Transmission - Factory Availability for Overhaul07/26/1976
en Interchangeability of Tabbed Main Rotor Blades (PN 369A1100-501) with Untabbed Main Rotor Blades (369A1100-501)07/21/1975
en New Conical Type Teeter Bearings for Tail Rotor Assembly08/11/1975
en Recharging of Inflation Bottles for Emergency Floats11/07/1975
en Interim Revision of HMI Appendix C Component Overhaul Manual - Tail Rotor Drive Fork and Hub Assembly Equipped With Conial Type Teeter Bearings08/10/1976
en Allison Model 250-C20 Series Engine - Installation of New High Pressure Fuel Filter Assembly08/10/1976
en New Main Rotor Damper Assembly, PN 369A1423-50112/24/1976
en Periodic Inspection of Particle Separator Kit Installation; Removal of Outlet Screen During Cold Weather Operations12/24/1976
en Improved Engine Air Filter Assembly for Particle Separator Filter Kit12/24/1976
en Interim Restriction of Engine N2 Operating Speed02/04/1977
en Cancelled Power Turbine (N2) Rub or Lockup in 250-C20 Engine02/04/1977
en New Oil Level Requirement for Initial Installation of Overrunning Clutch, PN 369A5350 Series03/20/1977
en New PN 369A1100-503 - Main Rotor Blade Assembly With Leading Edge Abrasion Strip08/08/1977
en Restriction of N2 Operating Speed06/22/1977
en Replacement of PN 369A1613-3 - Metal Tail Rotor Blade Assemblies07/22/1977
en Unlimited Service Life PN 369A7010 One-Way Unilock and PN 369A5408 and 369A5408-3 Tail Rotor Output Shafts07/22/1977
en Unitization of Engine Air Particle Separator and Engine Compressor Water Wash Kits02/14/1978
en Surplus or Bogus 369D21100 Series Main Rotor Blades02/10/1984
Service Information Notices
NameRevisionLangSubjectDate
1 en Overrunning Clutch Assembly, PN 369A5350-603 - Inspection of PN 369A5350-11 Clutch Subassembly, PN 369A5361 Ball Bearing, and PN 369A5368 Seal05/01/1978
1 en Inspection and Rework of Tail Rotor Hub, PN 369A1725-5 and 369A1725-501; Inspection of Tail Rotor Blade Attachment Bolts; PN MS21250-0604012/08/1978
en PN 369D21800 Tail Rotor Pitch Control Assembly - Seating of Dual Bearing Inner Races: Torque Increase for PN 369D21803-3 Locknut12/01/1978
4 en Mandatory Inspection of Main Rotor Blade Root Fitting Assemblies; Inspection of Main Rotor Hub Lead-Lag Link Assemblies06/15/1990
6 en Mandatory Inspection of Main Rotor Blade Root Fitting Assemblies; Inspection of Main Rotor Hub Lead-Lag Link Assemblies01/27/1993
en Replacement of PN 369A7706-3 RPM Governor Lever Control Rod05/15/1981
en Installation of Failsafe Device at Tail Rotor Drive Shaft Forward Flexible Coupling, PN 369A5501 or PN 369H92564; Check of Flexible Coupling08/07/1981
en Periodic Inspection of Main Rotor Drive Shaft, PN 369D2551011/30/1981
en Inspection of Main Transmission Output Shaft Assembly (Ring Gear Carrier) PN 369D2513205/26/1982
en Main Rotor Swashplate Bearing, PN 369A7003-3, Inspection and Possible Replacement12/23/1983
en Mandatory Riveting Tip-Cap to Tail Rotor Blade08/27/1984
1 en Mandatory Riveting Tip-Cap to Tail Rotor Blade05/01/1985
en Mandatory Installation of Failsafe Device at Tail Rotor Drive Shaft Aft Flexible Coupling, P/N 369A5501 or 369H92564: and Inspection of Flexible Couplings08/26/1986
en One-Time Inspection of Main Transmission Tail Rotor Output Drive Pinion Shaft (P/N 369D25125-BSC and 369D25125-11)04/23/1987
1 en Inspection of Main Transmission Output Shaft Assembly Ring Gear Carrier (P/N 369D25132-BSC or -5)10/30/1987
en Inspection of Tail Rotor Transmission Mounting Studs10/10/1987
en Mandatory Main Rotor Hub Assembly Strap Pack Lamination Inspection and Tri-Flow Wash Procedure of the Main Rotor Hub Assembly and Strap Pack Laminates01/15/1988
1 en Mandatory Overrunning Clutch Outer Race Inspection10/14/1988
2 en Mandatory Overrunning Clutch Outer Race Inspection04/11/1997
en Mandatory One-Time Inspection of the Engine to Transmission Driveshaft Couplings - 369H566004/05/1989
1 en Mandatory Inspection and Rework of Main and Tail Rotor Control Tubes (PN's 369A7007, 369A7009, 369A7011 and 369A7012)07/21/1989
1 en Mandatory One-Time Inspection and Replacement of Air Industries MS21250-04036 Bolts and Verification of Proper Installation of All MS21250-04036 Bolts in Main Transmission03/14/1990
en Mandatory One-Time Check/Periodic Inspection/Replacement of Tail Rotor Swashplate Bearing Set03/14/1990
en Mandatory One-Time Addition of Rivets to Tail Rotor Abrasion Strip09/27/1991
en Mandatory Inspection/Rework of Fuel Vent System01/17/1992
1 en Mandatory Inspection/Rework of Fuel Vent System09/10/1992
en Mandatory Tail Rotor Blade Abrasion Strip Modification10/26/1994
en Mandatory Main Rotor Blade Root End Inspection10/27/1995
en Mandatory Overrunning Clutch Inspection07/25/1997
en Mandatory Installation of Failsafe Device at Tail Rotor Drive Shaft Aft Flexible Coupling, P/N 369A5501 or 369H92564: and Inspection of Flexible Couplings08/26/1986
en Mandatory Periodic Inspection of Main Rotor Drive Shaft, P/N 369D2551004/29/1983
en Mandatory Main Rotor Swashplate Bearing, PN 369A7003-3, Inspection and Possible Replacement12/23/1983
en Mandatory Inspection, PN 369A7011 Longitudinal Mixer Control Rod; Replacement of PN 369D22509-51 Doubler with 369DSK169-3 Repair Doubler03/26/1984
en Mandatory Riveting Tip-Cap to Tail Rotor Blade08/27/1984
1 en Mandatory Riveting Tip-Cap to Tail Rotor Blade05/01/1985
en One-Time Inspection of Main Transmission Tail Rotor Output Drive Pinion Shaft (P/N 369D25125-BSC and 369D25125-11)04/23/1987
1 en Inspection of Main Transmission Output Shaft Assembly Ring Gear Carrier (P/N 369D25132-BSC or -5)10/30/1987
en Inspection of Tail Rotor Transmission Mounting Studs10/10/1987
2 en Mandatory Inspection of Main Rotor Blade Root Fitting Assemblies; Inspection of Main Rotor Hub Lead-Lag Link Assemblies06/15/1990
4 en Mandatory Inspection of Main Rotor Blade Root Fitting Assemblies; Inspection of Main Rotor Hub Lead-Lag Link Assemblies01/27/1993
en Mandatory Main Rotor Hub Assembly Strap Pack Lamination Inspection and Tri-Flow Wash Procedure of the Main Rotor Hub Assembly and Strap Pack Laminates01/15/1988
1 en Mandatory Overrunning Clutch Outer Race Inspection10/14/1988
2 en Mandatory Overrunning Clutch Outer Race Inspection04/11/1997
en Mandatory One-Time Inspection of the Engine to Transmission Driveshaft Couplings - 369H566004/05/1989
1 en Mandatory Inspection and Rework of Main and Tail Rotor Control Tubes (PN's 369A7007, 369A7009, 369A7011 and 369A7012)07/21/1989
1 en Mandatory One-Time Inspection and Replacement of Air Industries MS21250-04036 Bolts and Verification of Proper Installation of All MS21250-04036 Bolts in Main Transmission03/14/1990
en Mandatory One-Time Check/Periodic Inspection/Replacement of Tail Rotor Swashplate Bearing Set03/14/1990
en Mandatory One-Time Addition of Rivets to Tail Rotor Abrasion Strip09/27/1991
en Mandatory Inspection/Rework of Fuel Vent System01/17/1992
1 en Mandatory Inspection/Rework of Fuel Vent System09/10/1992
en Mandatory Tail Rotor Blade Abrasion Strip Modification10/26/1994
en Mandatory Main Rotor Blade Root End Inspection10/27/1995
en Mandatory Overrunning Clutch Inspection07/25/1997
en Mandatory Periodic Inspection of Main Rotor Drive Shaft, PN 369D2551007/29/1983
1 en Mandatory Riveting Tip-Cap to Tail Rotor Blade05/01/1985
en One-Time Inspection of Main Transmission Tail Rotor Output Drive Pinion Shaft (P/N 369D25125-BSC and 369D25125-11)04/23/1987
1 en Inspection of Main Transmission Output Shaft Assembly Ring Gear Carrier (P/N 369D25132-BSC or -5)10/30/1987
en Inspection of Tail Rotor Transmission Mounting Studs10/10/1987
2 en Mandatory Inspection of Main Rotor Blade Root Fitting Assemblies; Inspection of Main Rotor Hub Lead-Lag Link Assemblies06/15/1990
4 en Mandatory Inspection of Main Rotor Blade Root Fitting Assemblies; Inspection of Main Rotor Hub Lead-Lag Link Assemblies01/27/1993
en Mandatory Main Rotor Hub Assembly Strap Pack Lamination Inspection and Tri-Flow Wash Procedure of the Main Rotor Hub Assembly and Strap Pack Laminates01/15/1988
1 en Mandatory Overrunning Clutch Outer Race Inspection10/14/1988
2 en Mandatory Overrunning Clutch Outer Race Inspection04/11/1997
en Mandatory One-Time Inspection of the Engine to Transmission Driveshaft Couplings - 369H566004/05/1989
1 en Mandatory Inspection and Rework of Main and Tail Rotor Control Tubes (PN's 369A7007, 369A7009, 369A7011 and 369A7012)07/21/1989
1 en Mandatory One-Time Inspection and Replacement of Air Industries MS21250-04036 Bolts and Verification of Proper Installation of All MS21250-04036 Bolts in Main Transmission03/14/1990
en Mandatory One-Time Check/Periodic Inspection/Replacement of Tail Rotor Swashplate Bearing Set03/14/1990
en Mandatory One-Time Addition of Rivets to Tail Rotor Abrasion Strip09/27/1991
en Mandatory Inspection/Rework of Fuel Vent System01/17/1992
1 en Mandatory Inspection/Rework of Fuel Vent System09/10/1992
en Mandatory Tail Rotor Blade Abrasion Strip Modification10/26/1994
en Mandatory Main Rotor Blade Root End Inspection10/27/1995
en Mandatory Overrunning Clutch Inspection07/25/1997
en Valve Housing Modification - Heat Control Valve Assembly, Cabin Heating System Kit Installation03/01/1973
en Main Transmission Assembly PN 369A5100 Series (Includes Basic and All Dash-Numbered Configurations) - Installation of New Ring Gear Bolts and Serial Number Identification03/06/1973
en Engine Anti-Icing and Cabin Heating System Installations - Conversion from Electrical to Manual Operation05/01/1973
en Installation of SCR Assembly - Auto-Re-ignition Modification Kit PN M5003605/29/1973
en Periodic Inspection - Main Transmission Ring Gear Bolts PN 369A5174 or 369A514507/31/1973
en Installation of Nickel-Cadmium Battery Temperature Sensing Modification Kit PN M50037 or M5003808/06/1973
en Sealing - Skid Mounted Position Lights P/N 369H4534-21 and -2203/03/1974
en Replacement Metal Tail Rotor Blade PN 369A1613-3 - Compatibility Criteria03/04/1974
en Inspection of PN 369A2515-3 Frame and Battery03/25/1974
en Corrosion Prevention/Inspection - Main Rotor Blade PN 369A1100-50104/15/1974
en Terminal - Inspection/Modification - Nickel-Cadmium Battery PN 369A4530 and 369H454004/15/1974
en Installation of Heater System Muffler Assembly06/10/1974
en Installation - Fuel Shutoff Valve Control PN 369A8136-503 or -70108/05/1974
en Noise Filter Installation - Modification Kit PN M5003908/05/1974
en Emergency Release Mechanism, Modification (M50041) - Cargo Hook Kit Installation (369H90065)08/05/1974
en Inspection - Main Rotor Blade Trailing Edge08/19/1974
2 en Installation of Aluminum Type Main Rotor Blade Pendulum Weight Vibration Absorber Assembly PN 369N269709/29/1975
en Rework or Replacement - Fuel Cell Assemblies, PN 369H8101-3/-5 and 369A8102-3/-508/19/1974
en Relocation - Magnetic Compass PN 369H450809/30/1974
en Re-greasing Double Row Bearing - Main Rotor Swashplate Bearing Assembly PN 369A7003-309/24/1982
en Bendix Service Bulletin No. 109, Dated 10-22-74 Inspection, Flexible Coupling Locknut11/18/1974
en Modification - Fuel Cell Vent System Installation (Modification Kit PN M50042)01/02/1975
1 en Inspection/Repair, Aft Fuselage Skin Cracks09/26/1975
en Inspection - Root Fitting of Metal Tail Rotor Blades PN 369A1613-Basic and -304/15/1975
en Inspection - Hinges PN 369A8437; Engine Air Filter Bypass Door05/05/1975
1 en Relocation - Fuel Filter Pressure Switch PN 369H814406/20/1975
en Tail Rotor Drive System Inspection - Installation of Tail Rotor Drive Shaft PN 369A5518-601 and Bungee Assembly Associated With Metal Tail Rotor Blades and Indexing of all Helicopter Tail Rotor Drive Shafts04/28/1975
en Inspection and Relocation of Fuel Filter Pressure Switch PN 369H814406/23/1975
en Inspection - Fiberglass Tail Rotor Blades PN 369A1710-Basic, -9, -11 369A6120, 369A1607 & 369CSK2208/28/1975
en Modification - Tank Unit Fuel Quantity Rheostat, PN 369A4245-501 (Kit No. M50047)11/07/1975
en Field Modification - Door Latch Kit PN M5044012/11/1975
en Mandatory Modification for Seating and Belts for (4) Kit Installation, PN 369H90035-501 Additional of Head and Back Restraint Panels01/23/1976
en Field Maintenance - Main Rotor Damper Assembly PN 369A1400-603 to -605 Configuration03/01/1976
en Operational Check and Adjustment of Autolatching Mechanism - Pilot and Cargo Doors03/11/1976
en Removal of Inboard Tab - Main Rotor Blade, PN 369A1100-50104/01/1976
en Inspection and Possible Retirement - Main Rotor Blades, P/N 369A1100-50111/19/1969
en Mandatory Replacement of Tavco PN 23111357 Solenoid Valve, Inflation Float System - Emergency Float Assemblies, Hughes PN 369H92036-1 and 369H92036-204/15/1977
1 en Mandatory Inspection and Rework of Tail Rotor Hub, PN 369A1725 and 369A1725-5; Inspection of Tail Rotor Blade Attachment Bolts, PN MS21250-0604012/08/1978
en Replacement of Radio Transmit/Intercom Trigger Switch; Rework of Cyclic Pitch Stick Grip Assembly05/10/1979
en Mandatory Inspection and Repair - Tail Control Station 142.00 Bellcrank Support, PN 369A3035-11 and 369A3035-1506/11/1979
en Mandatory PN 369A1100-501 and 369A1100-503 Main Rotor Blades - Inspection of PN 369A1113 Upper Root Fitting and PN 369A1114 Lower Root Fitting Assemblies; Inspection of PN 369H1203 or 369A1203 Series Main Rotor Hub Lead-Lag Link Assemblies07/06/1979
1 en Installation of Voltage Transient Suppressors11/26/1979
en Rework of Ground Handling Wheel Assemblies (Float Type)08/20/1979
en Mandatory Kit Installation, PN 369D290140 - Auxiliary Fairing and Seals Air Filter (Particle Separator)07/23/1979
2 en Mandatory 100-Hour Periodic Inspection - Fuel Tank Sending Unit and Fuel Low Warning Light Indicating System05/04/1981
en Mandatory Inspection - Collective Torque Tube Support Bracket (PN 369A7304 Magnesium, PN 369H2608 Aluminum) and Collective Bungee Support Bracket (PN 369A7339 Magnesium, PN 369N2650 Aluminum)08/01/1979
en Mandatory Replacement of PN 369A7706-3 RPM Governor Lever Control Rod05/15/1981
en Mandatory - Deactivation of Main Rotor Brake System (if Installed); Periodic Inspection of Tail Rotor Drive Shaft Forward Flexible Coupling, PN 369A5501 or PN 369H92564 - Installation of Failsafe Device at Tail Rotor Drive Shaft Forward Flexible Coupling, PN 369A5501 or PN 369H92564; Check of Flexible Couplings11/02/1981
en Mandatory Main Rotor Swashplate Bearing Inspection and Possible Replacement12/23/1983
en Mandatory Riveting Tip-Cap to Tail Rotor Blade08/27/1984
en Mandatory Inspection - Landing Gear Struts and Feet10/01/1984
1 en Mandatory Riveting Tip-Cap to Tail Rotor Blade05/01/1985
en Mandatory Installation of Failsafe Device at Tail Rotor Drive Shaft Aft Flexible Coupling, P/N 369A5501 or 369H2564: and Inspection of Flexible Couplings08/26/1986
2 en Mandatory Inspection of Main Rotor Blade Root Fitting Assemblies; Inspection of Main Rotor Hub Lead-Lag Link Assemblies06/15/1990
4 en Mandatory Inspection of Main Rotor Blade Root Fitting Assemblies; Inspection of Main Rotor Hub Lead-Lag Link Assemblies01/27/1993
en Mandatory Main Rotor Hub Assembly Strap Pack Lamination Inspection and Tri-Flow Wash Procedure of the Main Rotor Hub Assembly and Strap Pack Laminates01/15/1988
1 en Mandatory Overrunning Clutch Outer Race Inspection10/14/1988
2 en Mandatory Overrunning Clutch Outer Race Inspection04/11/1997
en Mandatory One-Time Inspection of the Engine to Transmission Driveshaft Couplings - 369H566004/05/1989
1 en Mandatory Inspection and Rework of Main and Tail Rotor Control Tubes (PN's 369A7007, 369A7009, 369A7011 and 369A7012)07/21/1989
en Mandatory One-Time Addition of Rivets to Tail Rotor Abrasion Strip09/27/1991
en Mandatory Inspection/Rework of Fuel Vent System01/17/1992
1 en Mandatory Inspection/Rework of Fuel Vent System09/10/1992
en Mandatory Tail Rotor Blade Abrasion Strip Modification10/26/1994
en Mandatory Main Rotor Blade Root End Inspection10/27/1995
en Mandatory Main Rotor Blade Root End Inspection10/27/1995
en Mandatory Overrunning Clutch Outer Race Inspection04/11/1997
en Mandatory Overrunning Clutch Inspection07/25/1997
Service Letters
NameRevisionLangSubjectDate
3 en Customer Requests for Original Aircraft Records11/10/2004
3 en Maintenance and Operation Requirements for Safe Operation of Surplus 369A (OH-6A) Series Helicopters11/10/2004
en Service Notice, Letter and Bulletin Designations02/13/1998
en Interchangeability of Main Rotor Blades10/19/1998
1 en MD Helicopters Model 369/500N/600N Torque Event/Retirement Index Number Explanation05/15/2001
en Transfer of Ownership of Light Helicopter Line02/19/1999
en Required Inspections and Critical Inspection Areas08/16/1999
en Availability of Federal Aviation Administration Airworthiness Directives Affecting MD Helicopters05/23/2000
1 en Availability of Federal Aviation Administration Supplemental Type Certificates for MD Helicopters06/26/2000
en New Standard Warranty Statement03/02/2001
en Availability of MDHI Publications in Electronic Format09/17/2003
en Certain Helicopters Not Eligible for FAA Certificate of Airworthiness03/31/2004
en Helicopter Operation in Volcanic Ash Atmosphere05/06/2010
en Technical Publications Price Increase05/28/2010
en Kamatics Shaft and Coupling Overhaul/Exchange Program Announcement12/22/2010
en Technical Publications Price Increase12/22/2010
en Engine Power Out Warning Control Unit - Filter Installation07/20/2011
en Bendix King by Honeywell KRA 405B Radio Altimeter10/14/2011
en Technical Publications On-Line Ordering System07/08/2013
en Procedures for Service and Operations Reports08/09/2013
en Inspection of the Engine Exhaust Tail Pipes07/11/2014
en Inspection of the Tail Rotor Stop08/12/2014
en Tail-Rotor Transmission 369D25400 Series Run-in Instructions11/14/2014
en Inspection of the Engine Exhaust Pipe Support Fitting10/27/2015
en Inspections of Main Rotor Blades02/25/2016
3 en Customer Requests for Original Aircraft Records11/10/2004
3 en Maintenance and Operation Requirements for Safe Operation of Surplus 369A (OH-6A) Series Helicopters11/10/2004
en Service Notice, Letter and Bulletin Designations02/13/1998
en Interchangeability of Main Rotor Blades10/19/1998
1 en MD Helicopters Model 369/500N/600N Torque Event/Retirement Index Number Explanation05/15/2001
en Transfer of Ownership of Light Helicopter Line02/19/1999
en Required Inspections and Critical Inspection Areas08/16/1999
en Availability of Federal Aviation Administration Airworthiness Directives Affecting MD Helicopters05/23/2000
1 en Availability of Federal Aviation Administration Supplemental Type Certificates for MD Helicopters06/26/2000
en New Standard Warranty Statement03/02/2001
en Availability of MDHI Publications in Electronic Format09/17/2003
en Certain Helicopters Not Eligible for FAA Certificate of Airworthiness03/31/2004
en Helicopter Operation in Volcanic Ash Atmosphere05/06/2010
en Technical Publications Price Increase05/28/2010
en Kamatics Shaft and Coupling Overhaul/Exchange Program Announcement12/22/2010
en Technical Publications Price Increase12/22/2010
en Engine Power Out Warning Control Unit - Filter Installation07/20/2011
en Bendix King by Honeywell KRA 405B Radio Altimeter10/14/2011
en Technical Publications On-Line Ordering System07/08/2013
en Procedures for Service and Operations Reports08/09/2013
en Inspection of United Instruments Products09/27/2013
en Inspection of the Engine Exhaust Tail Pipes07/11/2014
en Inspection of the Tail Rotor Stop08/12/2014
en Tail-Rotor Transmission 369D25400 Series Run-in Instructions11/14/2014
en Inspection of the Engine Exhaust Pipe Support Fitting10/27/2015
en Inspections of Main Rotor Blades02/25/2016
3 en Customer Requests for Original Aircraft Records11/10/2004
2 en Maintenance and Operation Requirements for Safe Operation of Surplus 369A (OH-6A) Series Helicopters11/10/2004
en Service Notice, Letter and Bulletin Designations02/13/1998
en Interchangeability of Main Rotor Blades10/19/1998
1 en MD Helicopters Model 369/500N/600N Torque Event/Retirement Index Number Explanation05/15/2001
en Transfer of Ownership of Light Helicopter Line02/19/1999
en Required Inspections and Critical Inspection Areas08/16/1999
en Availability of Federal Aviation Administration Airworthiness Directives Affecting MD Helicopters05/23/2000
1 en Availability of Federal Aviation Administration Supplemental Type Certificates for MD Helicopters06/26/2000
en New Standard Warranty Statement03/02/2001
en Availability of MDHI Publications in Electronic Format09/17/2003
en Certain Helicopters Not Eligible for FAA Certificate of Airworthiness03/31/2004
en Helicopter Operation in Volcanic Ash Atmosphere05/06/2010
en Technical Publications Price Increase05/28/2010
en Kamatics Shaft and Coupling Overhaul/Exchange Program Announcement12/22/2010
en Technical Publications Price Increase12/22/2010
en Engine Power Out Warning Control Unit - Filter Installation07/20/2011
en Bendix King by Honeywell KRA 405B Radio Altimeter10/14/2011
en Technical Publications On-Line Ordering System07/08/2013
en Procedures for Service and Operations Reports08/09/2013
en Inspection of United Instruments Products09/27/2013
en Inspection of the Tail Rotor Stop08/12/2014
en Tail-Rotor Transmission 369D25400 Series Run-in Instructions11/14/2014
en Inspection of the Engine Exhaust Pipe Support Fitting10/27/2015
en Inspections of Main Rotor Blades02/25/2016
3 en Customer Requests for Original Aircraft Records11/10/2004
3 en Maintenance and Operation Requirements for Safe Operation of Surplus 369A (OH-6A) Series Helicopters11/10/2004
en Service Notice, Letter and Bulletin Designations02/13/1998
1 en MD Helicopters Model 369/500N/600N Torque Event/Retirement Index Number Explanation05/15/2001
en Transfer of Ownership of Light Helicopter Line02/19/1999
en Required Inspections and Critical Inspection Areas08/16/1999
en Availability of Federal Aviation Administration Airworthiness Directives Affecting MD Helicopters05/23/2000
1 en Availability of Federal Aviation Administration Supplemental Type Certificates for MD Helicopters06/26/2000
en New Standard Warranty Statement03/02/2001
en 4-Bladed Main Rotor Hub Overhauls and Repairs02/26/2002
en Availability of MDHI Publications in Electronic Format09/17/2003
en Helicopter Operation in Volcanic Ash Atmosphere05/06/2010
en Technical Publications Price Increase05/28/2010
en Kamatics Shaft and Coupling Overhaul/Exchange Program Announcement12/22/2010
en Technical Publications Price Increase12/22/2010
en Engine Power Out Warning Control Unit - Filter Installation07/20/2011
en Bendix King by Honeywell KRA 405B Radio Altimeter10/14/2011
en Technical Publications On-Line Ordering System07/08/2013
en Procedures for Service and Operations Reports08/09/2013
en Inspection of the Tail Rotor Stop08/12/2014
en Inspection of the Engine Exhaust Pipe Support Fitting10/27/2015
en Service Notice, Letter and Bulletin Designations02/03/1998
en Interchangeability of Main Rotor Blades10/19/1998
1 en MD Helicopters Model 369/500N/600N Torque Event/Retirement Index Number Explanation05/15/2001
en Transfer of Ownership of Light Helicopter Line02/19/1999
en Required Inspections and Critical Inspection Areas08/16/1999
en Availability of Federal Aviation Administration Airworthiness Directives Affecting MD Helicopters05/23/2000
1 en Availability of Federal Aviation Administration Supplemental Type Certificates for MD Helicopters06/26/2000
en Notar Fan Diffuser Interchangeability11/09/2000
en New Standard Warranty Statement03/02/2001
en Fan Control Tube Vibration07/22/2002
en Availability of MDHI Publications in Electronic Format09/17/2003
en Thruster Control Cables02/13/2007
en Notar Fan Tension-Torsion Strap Replacement12/27/2007
en Helicopter Operation in Volcanic Ash Atmosphere05/06/2010
en Technical Publications Price Increase05/28/2010
en Kamatics Shaft and Coupling Overhaul/Exchange Program Announcement12/22/2010
en Technical Publications Price Increase12/22/2010
en Engine Power Out Warning Control Unit - Filter Installation07/20/2011
en Bendix King by Honeywell KRA 405B Radio Altimeter10/14/2011
en Technical Publications On-Line Ordering System07/08/2013
en Aft Ring Frame and Tailboom Attachment Inspection07/24/2013
en Procedures for Service and Operations Reports08/09/2013
en Inspection of the Engine Exhaust Tail Pipes07/11/2014
en Inspection of the Cable Hoist Vne Card11/19/2014
en Inspection of the Engine Exhaust Pipe Support Fitting10/27/2015
en Inspections of Main Rotor Blades02/25/2016
en Service Notice, Letter and Bulletin Designations02/13/1998
en Collective Controls Replacement04/14/1998
en Interchangeability of Main Rotor Blades10/19/1998
1 en MD Helicopters Model 369/500N/600N Torque Event/Retirement Index Number Explanation05/15/2001
en Transfer of Ownership of Light Helicopter Line02/19/1999
en Required Inspections and Critical Inspection Areas08/16/1999
en Availability of Federal Aviation Administration Airworthiness Directives Affecting MD Helicopters05/23/2000
1 en Availability of Federal Aviation Administration Supplemental Type Certificates for MD Helicopters06/26/2000
en New Standard Warranty Statement03/02/2001
en Fan Control Tube Vibration07/22/2002
en Availability of MDHI Publications in Electronic Format09/17/2003
en Thruster Control Cables02/13/2007
en Notar Fan Tension-Torsion Strap Replacement12/27/2007
en Fuselage Aft Section and Tailboom Modification04/16/2008
en Yearly Fuel Transfer System Functional Check05/06/2010
en Helicopter Operation in Volcanic Ash Atmosphere05/06/2010
en Technical Publications Price Increase05/28/2010
en Kamatics Shaft and Coupling Overhaul/Exchange Program Announcement12/22/2010
en Technical Publications Price Increase12/22/2010
en Bendix King by Honeywell KRA 405B Radio Altimeter10/14/2011
en Technical Publications On-Line Ordering System07/08/2013
en Procedures for Service and Operations Reports08/09/2013
en Inspection of the Engine Exhaust Pipe Support Fitting10/27/2015
en Inspections of Main Rotor Blades02/25/2016
1 en P&WC Powerplant Publications Availability, Requirements and Distribution Information06/22/2000
en Maximum Up Flapping and Cyclic Deflection of Main Rotor Flexbeam During Ground Handling, Maintenance, and Pre-Flight Operations05/15/1995
en Improved Rig Pin Access Fod Covers11/11/1995
en Pedal Return Springs11/11/1995
en Aircraft Modification Limitations and STC Installations09/22/1995
en MD 900 Directional Control Inputs12/06/1995
en Integrated Instrumentation Display System (IIDS) - CMA205501/19/1996
en Cockpit Door Latching Mechanism Modification Instructions04/05/1996
1 en Use of Alternate Floor Panel Hardware03/21/1997
en Trim Actuator Assembly Replacement for Autopilot Option05/21/1996
en Transmission Access Doors and Battery Door Fastener Upgrade (Ref CR#110679)07/08/1996
en Secondary Oil Ejector Modification08/14/1996
en Pedal Friction Hardware Option12/18/1996
en Station 203 Forward Ground Handling Wheel Location12/20/1996
1 en Hoist Inspection Hole Installation01/03/1997
1 en Cabin Seat - 4 Point Restraint System Option01/03/1997
2 en Cabin Seat - 4 Point Restraint System Option11/09/2009
en Baggage Door Window Installation01/03/1997
1 en Cabin Door Handle Installation01/23/1998
en Baggage Compartment Closeout Panel Installation for Utility Interiors (Noise Reduction)03/17/1997
en Strobe Light Circuit Breaker05/05/1997
en Aft Jack Pad Access Hole05/14/1997
en Vent System Air Duct/Additional Air Outlets Installation06/26/1997
1 en Electronic Engine Control (EEC) P&WC S.B. 2811103/10/2000
en Service Letter and Bulletin Designations02/13/1998
en Structural Load Limits of MD900 Fuselage Handles10/13/1998
en Transfer of Ownership of Light Helicopter Line02/19/1999
1 en Integrated Instrumentation Display System (IIDS)01/14/2002
en Availability of Federal Aviation Administration Airworthiness Directives Affecting MD Helicopters05/23/2000
1 en Availability of Federal Aviation Administration Supplemental Type Certificates for MD Helicopters06/26/2000
en Anti-Torque Fan Inlet Screen06/29/2000
en New Standard Warranty Statement03/02/2001
en Availability of New Engine Alignment Tool09/17/2002
en Prolonging the Life of the Integrated Instrument Display System (IIDS)12/10/2002
en Integrated Instrumentation Display System (IIDS) Mod 303/21/2003
en Availability of MDHI Publications in Electronic Format09/17/2003
en Calculation of One Engine Inoperative (OEI) Excursions Cumulative Log Time for 900A3720002-1 13 and 900A3720002-121 IIDS03/29/2005
en Anti-Torque Control Pedal Separation09/13/2005
en Main Rotor Hub Fretting Buffer and O-Ring Packing02/06/2008
en Thruster Control Cables03/13/2007
en Main Rotor Blade Retention Bolt Check06/19/2007
en Collective Control Position Transducer Linkage11/30/2007
en Notar Fan Tension-Torsion Strap Replacement12/27/2007
en Honeywell EFIS IFR STC (SR00436WI-D)01/04/2008
en Better Transmission Oil Hoses03/31/2008
1 en Better Transmission Oil Hoses06/20/2008
en IIDS Maximum Number Limits02/13/2009
en Main Rotor Blade Retention Bolt Check06/24/2009
en Main Rotor Blade Retention Bolt07/29/2009
en Installation of Engine Ground Studs08/26/2009
1 en Installation of Engine Ground Studs10/15/2010
2 en Installation of Engine Ground Studs04/07/2011
en Main Rotor Drive Plate O-Ring Packing10/27/2009
en Landing Gear Damper Assembly and Sealing Compound11/09/2009
en Thruster Assembly Washer Modification01/14/2010
en Bendix/King by Honeywell - Wingman Services: Database Downloads and EGPWS Updates01/26/2010
en Helicopter Operation in Volcanic Ash Atmosphere05/06/2010
en Technical Publications Price Increase05/28/2010
en Air-Conditioning System Maintenance07/23/2010
en Honeywell GPS Navigator08/03/2010
en Servicing the Mast Support Base Assembly10/15/2010
en Technical Publications Price Increase12/22/2010
en Operation in a Corrosive Environment04/21/2011
en Bendix King by Honeywell KRA 405B Radio Altimeter10/14/2011
en Inspection of Goodrich Hoist Motors03/26/2013
en Technical Publications On-Line Ordering System07/08/2013
en Procedures for Service and Operations Reports08/09/2013
en New Blade Retention Bolts Available03/11/2015
en Repair for the Engine Control System Rotary Switch Knobs03/20/2015
en Utilization of Engine Air Particle Separator and Engine Compressor Water Wash02/14/1978
en (INSCO) Instrument Specialties Co. Inc. - Authorized Repair Stations and Official Sales and Service Facilities05/22/1978
en Operation and Maintenance Guidelines for Model C250-C20B Engine Fuel System08/01/1979
en New Comfort Clips for Seat Belt and Shoulder Harness Assemblies, PN 369H6541, 369H6541-21, 369H6541-23, and 369H6541-2512/10/1979
2 en Interchangeability of PN 369D21100 Series Main Rotor Blades; PN 369D21100-513 Main Rotor Blade Now Standard Production Configuration03/01/1984
en Compliance with FAA Airworthiness Directives and Hughes Mandatory (Red Border) Service Information Notices
en Substitution of Wet Spline Drive Starter-Generator for Existing Dry Spline Drive Starter-Generator03/13/1981
en Ground Handling Precautions for Main Rotor Blades with Elastomeric Damper Assemblies07/31/1981
en Tail Rotor Drive Shaft Flexible Couplings PN 369A5501 and 369H92564 - Treatment with Molykote Metal Protector08/21/1981
en New Protective Boots for Main Rotor Hub and Tail Rotor Assemblies09/01/1981
en Field Replacement of "0" Ring for PN 369A8321 Oil Tank Filler Cap11/02/1981
1 en Installation of Surplus Military Parts, Salvaged or Used Parts on Model 500D Helicopters02/10/1984
en Lubrication of Drive End Bearing Liner in Aircraft Parts Corp. Model 150SG Series Starter-Generator03/26/1982
en Ground Testing - Engine Automatic Reignition and Engine Anti-Ice Fuel Filter Systems11/22/1982
en Prevention of Water Leakage Through Canopy Geon Strips01/10/1983
en New Attitude Gyro Indicator and Support Assembly02/25/1983
en Surplus or Bogus 369D21100 Series Main Rotor Blades02/10/1984
en Unauthorized Tail Rotor Teeter Bearings05/16/1984
en Major Installations and Alterations to Your Hughes Helicopters11/12/1984
en Start Pump Wire Routing Precaution07/10/1985
en Explanation of Parts Serialization09/15/1985
en Unauthorized Overhaul of Main Rotor Hub Assemblies03/17/1986
3 en Cancelled Light Helicopter Product Support Department Communications Information05/23/2000
1 en Availability of Kamatics Corp. Kaflex Main Drive Shaft (MDHC PN 369D25515) and Tail Rotor Driveshaft Couplings (MDHC PN 369D5501-3)08/05/1989
en Re-Lubrication of Bearings in Storage04/06/1987
en External Scavenge Oil Filter System05/01/1987
en Unauthorized Distribution of Main Rotor Hub Overhaul Manual06/15/1987
en Illustrated Parts Breakdown of Ground Handling Wheel Assembly (PN 369D2610)02/19/1988
en Improved Strength PC Filter Housing04/04/1988
en Addition of Identification Decal on Aircraft Exterior (Compliance to FAR 45.11 [D])05/06/1988
en Availability and Distributors of Tri-Flow Lubricant/Wash05/09/1988
en Additional Inspection Requirements of the Breeze-Eastern Rescue Hoist System05/18/1988
en Chafe Wrapping of Stainless Steel Tube Assemblies and Allison Commercial Service Letter CSL 145, CSL 1140 and CSL 3092, Dated May 1, 198805/26/1988
en Improved Fuel Drain Valve Assembly07/01/1988
2 en Facet Scavenge Oil Filter Kits, P/N 1741050 (369H Series, 369D and 369E) and P/N 1741300 (369F/FF)11/21/1990
en Validity of Spectrum Oil Analysis Program (S.O.A.P.)01/15/1989
1 en New MDHC Authorized Helicopter Airframe Repair Facilities09/15/1989
1 en Special Warranty Consideration for the Main Rotor Hub Strap Pack Inspection09/15/1989
en Availability of Main Rotor Transmission Filler Cap Extension (MDHC P/N 389D25112)08/05/1989
en Availability of Wire Strike Protection System (Trademark WSPS) on all MDHC 369 Series Helicopters09/15/1989
en Federal Investigation of Central Aviation and Marine Corporation (CAMCO)10/27/1989
1 en Availability of Autronics Corporation Electrical Component Exchange Program09/27/1991
en Compliance to Breeze-Eastern Customer Service Bulletin CSB-120 (Warning Plate for Cargo Hooks)12/15/1989
en Storage Time Limitations of the Engine N2 and Rotor Tachometer Indicators (P/N 369D24518(BSC), -3 & -5)09/01/1990
en Availability of Improved Spacers to be Used on the Shock-Mounted Skid Tube Position Light Assemblies05/01/1991
en Main Rotor Hub Balancing10/11/1991
en New Configuration Main Rotor Blades/Abrasion Strips12/19/1991
1 en Policy Price of 369H8108 Fuel Vent Emergency Shutoff Valve09/10/1992
en Main Rotor Blade Inspection Program01/27/1993
en Antenna Location and Flight Maneuver Caution03/22/1993
2 en Cancelled Introduction of Use of an Alternate Drive System Lubricant11/10/2000
en Compliance to Service Information Notices DN-185, EN-78 and FN-64, Dated 23 September 1994 and FAA Airworthiness Directive 94-24-0412/21/1994
en Tail Rotor Abrasion Strip Warranty Policy/Compensation05/10/1995
en Alternate/Improved Engine Oil Tank Seal07/01/1997
en Surplus or Bogus 369D21100 Series Main Rotor Blades02/10/1984
en Installation of Surplus Military Parts, Salvaged or Used Parts on Model 500E Helicopters02/10/1984
en Unauthorized Tail Rotor Teeter Bearings05/16/1984
en Major Installations and Alterations to Your Hughes Helicopters11/12/1984
en Start Pump Wire Routing Precaution07/10/1985
en Explanation of Parts Serialization09/15/1985
en Unauthorized Overhaul of Main Rotor Hub Assemblies03/17/1986
3 en Cancelled Light Helicopter Product Support Department Communications Information05/23/2000
1 en Availability of Kamatics Corp. Kaflex Main Drive Shaft (MDHC PN 369D25515) and Tail Rotor Driveshaft Couplings (MDHC PN 369D5501-3)08/05/1989
en Re-Lubrication of Bearings in Storage04/06/1987
en External Scavenge Oil Filter System05/01/1987
en Unauthorized Distribution of Main Rotor Hub Overhaul Manual06/15/1987
en Illustrated Parts Breakdown of Ground Handling Wheel Assembly (PN 369D2610)02/19/1988
en Improved Strength PC Filter Housing04/04/1988
en Addition of Identification Decal on Aircraft Exterior (Compliance to FAR 45.11 [D])05/06/1988
en Availability and Distributors of Tri-Flow Lubricant/Wash05/09/1988
en Chafe Wrapping of Stainless Steel Tube Assemblies and Allison Commercial Service Letter CSL 145, CSL 1140 and CSL 3092, Dated May 1, 198805/26/1988
en Improved Fuel Drain Valve Assembly07/01/1988
2 en Facet Scavenge Oil Filter Kits, P/N 1741050 (369H Series, 369D and 369E) and P/N 1741300 (369F/FF)11/21/1990
en Validity of Spectrum Oil Analysis Program (S.O.A.P.)01/15/1989
1 en New MDHC Authorized Helicopter Airframe Repair Facilities09/15/1989
1 en Special Warranty Consideration for the Main Rotor Hub Strap Pack Inspection09/15/1989
en Availability of Main Rotor Transmission Filler Cap Extension (MDHC P/N 389D25112)08/05/1989
en Availability of Wire Strike Protection System (Trademark WSPS) on all MDHC 369 Series Helicopters09/15/1989
en Federal Investigation of Central Aviation and Marine Corporation (CAMCO)10/27/1989
1 en Availability of Autronics Corporation Electrical Component Exchange Program09/27/1991
en Compliance to Breeze-Eastern Customer Service Bulletin CSB-120 (Warning Plate for Cargo Hooks)12/15/1989
en Storage Time Limitations of the Engine N2 and Rotor Tachometer Indicators (P/N 369D24518(BSC), -3 & -5)09/01/1990
en Availability of Improved Spacers to be Used on the Shock-Mounted Skid Tube Position Light Assemblies05/01/1991
en Main Rotor Hub Balancing10/11/1991
en New Configuration Main Rotor Blades/Abrasion Strips12/19/1991
1 en Policy Price of 369H8108 Fuel Vent Emergency Shutoff Valve09/10/1992
en Main Rotor Blade Inspection Program01/27/1993
en Antenna Location and Flight Maneuver Caution03/22/1993
2 en Cancelled Introduction of Use of an Alternate Drive System Lubricant11/10/2000
en Compliance to Service Information Notices DN-185, EN-78 and FN-64, Dated 23 September 1994 and FAA Airworthiness Directive 94-24-0412/21/1994
en Tail Rotor Abrasion Strip Warranty Policy/Compensation05/10/1995
en Alternate/Improved Engine Oil Tank Seal07/01/1997
en Surplus or Bogus 369D21100 Series Main Rotor Blades02/10/1984
en Major Installations and Alterations to Your Hughes Helicopters11/12/1984
en Tri-Flow Wash Procedure - Main Rotor Hub03/01/1985
en Explanation of Parts Serialization09/15/1985
en Unauthorized Overhaul of Main Rotor Hub Assemblies03/17/1986
3 en Cancelled Light Helicopter Product Support Department Communications Information05/23/2000
en Re-Lubrication of Bearings in Storage04/06/1987
en External Scavenge Oil Filter System05/01/1987
en Unauthorized Distribution of Main Rotor Hub Overhaul Manual06/15/1987
1 en Availability of Kamatics Corp. Kaflex Main Drive Shaft (MDHC PN 369D25515) and Tail Rotor Driveshaft Couplings (MDHC PN 369D5501-3)08/05/1989
en Illustrated Parts Breakdown of Ground Handling Wheel Assembly (PN 369D2610)02/19/1988
en Improved Strength PC Filter Housing04/04/1988
en Addition of Identification Decal on Aircraft Exterior (Compliance to FAR 45.11 [D])05/06/1988
en Availability and Distributors of Tri-Flow Lubricant/Wash05/09/1988
en Chafe Wrapping of Stainless Steel Tube Assemblies and Allison Commercial Service Letter CSL 145, CSL 1140 and CSL 3092, Dated May 1, 198805/26/1988
en Improved Fuel Drain Valve Assembly07/01/1988
en Validity of Spectrum Oil Analysis Program (S.O.A.P.)01/15/1989
1 en New MDHC Authorized Helicopter Airframe Repair Facilities09/15/1989
1 en Special Warranty Consideration for the Main Rotor Hub Strap Pack Inspection09/15/1989
en Availability of Main Rotor Transmission Filler Cap Extension (MDHC P/N 389D25112)08/05/1989
en Availability of Wire Strike Protection System (Trademark WSPS) on all MDHC 369 Series Helicopters09/15/1989
en Federal Investigation of Central Aviation and Marine Corporation (CAMCO)10/27/1989
1 en Availability of Autronics Corporation Electrical Component Exchange Program09/27/1991
en Compliance to Breeze-Eastern Customer Service Bulletin CSB-120 (Warning Plate for Cargo Hooks)12/15/1989
en Storage Time Limitations of the Engine N2 and Rotor Tachometer Indicators (P/N 369D24518(BSC), -3 & -5)09/01/1990
en Facet Scavenge Oil Filter Kits, P/N 1741050 (369H Series, 369D and 369E) and P/N 1741300 (369F/FF)11/21/1990
en Availability of Improved Spacers to be Used on the Shock-Mounted Skid Tube Position Light Assemblies05/01/1991
en Main Rotor Hub Balancing10/11/1991
en New Configuration Main Rotor Blades/Abrasion Strips12/19/1991
1 en Policy Price of 369H8108 Fuel Vent Emergency Shutoff Valve09/10/1992
en Main Rotor Blade Inspection Program01/27/1993
en Antenna Location and Flight Maneuver Caution03/22/1993
2 en Cancelled Introduction of Use of an Alternate Drive System Lubricant11/10/2000
en Compliance to Service Information Notices DN-185, EN-78 and FN-64, Dated 23 September 1994 and FAA Airworthiness Directive 94-24-0412/21/1994
en Tail Rotor Abrasion Strip Warranty Policy/Compensation05/10/1995
en Alternate/Improved Engine Oil Tank Seal07/01/1997
en Transmission, Main Rotor and Tail Rotor - Oil Change and Filter Change Periods. Extended from 150 Hours to 300 Hours02/27/1978
en Paint Schedules and Ordering Procedures04/10/1978
en (INSCO) Instrument, Specialties Co. Inc. -- Authorized Repair Stations and Official Sales and Service Facilities05/22/1978
en Reduction Gearbox, Model 250-C20 Engine - Time Between Overhaul (TBO) Requirements Eliminated06/26/1978
en PN - 369A1620 Series Tail Rotor Assembly - Elimination of Overhaul Schedule (TBO) Requirement; Interchangeability of PN - 369A1725 Series Tail Rotor Hub Assembly06/26/1978
en Particle Separator Installation and Inspection and Possible Removal of Circular Filter Screens09/08/1978
en Approved Igniter Assemblies and Ignition Exciter Assemblies For Hughes PN - 369H90118 Series Automatic Engine Reignition Kit Installations07/20/1979
en Operation and Maintenance Guidelines for Model 250 Series Engine Fuel System08/01/1979
en Engine Compressor Cleaning- Daily Water Rinse and Periodic Water Wash04/18/1980
en New Seal Requirement for Overhaul of PN 369H6340 and 369H92131 Landing Gear Damper Assemblies05/26/1980
en Detroit Diesel Allison Commercial Service Letter CSL-1079 Re: High Pressure Fuel Filter (Ceco Fuel System)09/12/1980
en Compliance with FAA Airworthiness Directives and Hughes Mandatory (Red Border) Service Information Notices09/30/1980
en Substitution of Wet Spline Drive Starter-Generator for Existing Dry Spline Drive Starter-Generator03/13/1981
en PN 369A1200 and 369H1200 Main Rotor Hub Assembly, PN 369A5100-709 Main Rotor Transmission and PN 369A5400-701 Tail Rotor Transmission - Time Between Overhaul (TBO) Increased06/30/1981
en Corrosion Control Manual Now Available for General Distribution and Purchase08/21/1981
en Tail Rotor Drive Shaft Flexible Couplings, PN 369A5501 and 369H92564 - Treatment with Molykote Metal Protector08/21/1981
en New Protective Boots for Main Rotor Hub and Tail Rotor Assemblies09/01/1981
en Field Replacement of '0' Ring for PN 369A8321 Oil Tank Filler Cap11/02/1981
en New PN 369D28237 Cushion for Tailpipe Hanger Assembly Designed for Longer Wear02/01/1982
en Lubrication of Drive End Bearing Liner in Aircraft Parts Corp. Model 150SG Series Starter-Generator03/26/1982
en PN 369A7609 Series Main Rotor Swashplate Assembly - Time Between Overhaul (TBO) Increased to 2650 Hours09/24/1982
en Distribution and Shipment of HHI 269/369 Commercial and Military Publications11/01/1982
en Ground Testing - Engine Automatic Re-Ignition and Engine Anti-Ice Fuel Filter Systems11/22/1982
en Prevention of Water Leakage Through Canopy Geon Strips01/10/1983
en Handling and Shipping Gyros02/01/1983
en New Attitude Gyro Indicator and Support Assembly02/25/1983
en Surplus or Bogus 369D21100 Series Main Rotor Blades02/10/1984
en Unauthorized Tail Rotor Teeter Bearings05/16/1984
en Major Installations and Alterations to Your Hughes Helicopters11/12/1984
en Start Pump Wire Routing Precaution07/10/1985
en Explanation of Parts Serialization09/15/1985
en Unauthorized Overhaul of Main Rotor Hub Assemblies03/17/1986
3 en Cancelled Light Helicopter Product Support Department Communications Information05/23/2000
1 en Availability of Kamatics Corp. Kaflex Main Drive Shaft (MDHC PN 369D25515) and Tail Rotor Driveshaft Couplings (MDHC PN 369D5501-3)08/05/1989
en Re-Lubrication of Bearings in Storage04/06/1987
en External Scavenge Oil Filter System05/01/1987
en Unauthorized Distribution of Main Rotor Hub Overhaul Manual06/15/1987
en Illustrated Parts Breakdown of Ground Handling Wheel Assembly (PN 369D2610)02/19/1988
en Improved Strength PC Filter Housing04/04/1988
en Addition of Identification Decal on Aircraft Exterior (Compliance to FAR 45.11 [D])05/06/1988
en Availability and Distributors of Tri-Flow Lubricant/Wash05/09/1988
en Additional Inspection Requirements of the Breeze-Eastern Rescue Hoist System05/18/1988
en Chafe Wrapping of Stainless Steel Tube Assemblies and Allison Commercial Service Letter CSL 145, CSL 1140 and CSL 3092, Dated May 1, 198805/26/1988
en Recommended Replacement Interval for 369H5655-3/-5 Oil Cooler Bearings and 369H5648 Oil Cooler Belt07/01/1988
en Improved Fuel Drain Valve Assembly07/01/1988
2 en Facet Scavenge Oil Filter Kits, P/N 1741050 (369H Series, 369D and 369E) and P/N 1741300 (369F/FF)11/21/1990
en Validity of Spectrum Oil Analysis Program (S.O.A.P.)01/15/1989
1 en New MDHC Authorized Helicopter Airframe Repair Facilities09/15/1989
en Availability of Main Rotor Transmission Filler Cap Extension (MDHC P/N 389D25112)08/05/1989
en Availability of Wire Strike Protection System (Trademark WSPS) on all MDHC 369 Series Helicopters09/15/1989
en Federal Investigation of Central Aviation and Marine Corporation (CAMCO)10/27/1989
1 en Availability of Autronics Corporation Electrical Component Exchange Program09/27/1991
en Compliance to Breeze-Eastern Customer Service Bulletin CSB-120 (Warning Plate for Cargo Hooks)12/15/1989
en Availability of Improved Spacers to be Used on the Shock-Mounted Skid Tube Position Light Assemblies05/01/1991
en Observation of 369A1010(BSC) and -3 Main Rotor Hub Hoisting Eye Bolts09/27/1991
en Main Rotor Hub Balancing10/11/1991
1 en Policy Price of 369H8108 Fuel Vent Emergency Shutoff Valve09/10/1992
en Main Rotor Blade Inspection Program01/27/1993
en Antenna Location and Flight Maneuver Caution03/22/1993
2 en Cancelled Introduction of Use of an Alternate Drive System Lubricant11/10/2000
en Tail Rotor Abrasion Strip Warranty Policy/Compensation05/10/1995
en Increased Overhaul Period on OH-6A Main Rotor Hubs and 369A5400-701 Tail Rotor Transmission Utilization08/25/1995
en Alternate/Improved Engine Oil Tank Seal07/01/1997
2 en Cancelled Introduction of Use of an Alternate Drive System Lubricant11/10/2000
en New MD500N Standard Warranty Statement06/01/1994
en Alternate/Improved Engine Oil Tank Seal07/01/1997
Technical Bulletins
NameRevisionLangSubjectDate
1 en Cancelled Door Seal Replacement03/15/2002
en Cyclic Grip Modification06/01/1999
en Main Transmission Lubrication Pump Modification04/09/2001
en Cyclic Trim Actuator Housing Replacement or Modification06/12/2001
en Engine Automatic Re-Ignition Modification03/13/2009
en Modification and Installation of a New Engine N2 and Rotor Tachometer Indicator01/23/2015
1 en Cancelled Door Seal Replacement03/15/2002
en Cyclic Grip Modification06/01/1999
en Main Transmission Lubrication Pump Modification04/09/2001
en Cyclic Trim Actuator Housing Replacement or Modification06/12/2001
en Slant Console Installation05/15/2013
en LED Anti-Collision (Strobe) and Position Light Installation08/05/2013
1 en LED Anti-Collision (Strobe) and Position Light Installation05/21/2015
en Garmin G500H and Avionics Suite10/25/2013
1 en Garmin G500H and Avionics Suite05/14/2014
en Modification and Installation of a New Engine N2 and Rotor Tachometer Indicator01/23/2015
1 en Cancelled Door Seal Replacement03/15/2002
en Cyclic Grip Modification06/01/1999
en Fuel System Vapor Vent Line Check Valve Installation10/26/1999
en Allison 250-C30 Engine Installation Surge Fix Modification04/26/2000
en Main Transmission Lubrication Pump Modification04/09/2001
en Cyclic Trim Actuator Housing Replacement or Modification06/12/2001
en Cooling Scoop Modification05/15/2012
en Slant Console Installation05/15/2013
en LED Anti-Collision (Strobe) and Position Light Installation08/05/2013
1 en LED Anti-Collision (Strobe) and Position Light Installation05/21/2015
en Garmin G500H and Avionics Suite10/25/2013
1 en Garmin G500H and Avionics Suite05/14/2014
en Modification and Installation of a New Engine N2 and Rotor Tachometer Indicator01/23/2015
1 en Cancelled Door Seal Replacement03/15/2002
en Cyclic Grip Modification06/01/1999
en Cyclic Trim Actuator Housing Replacement or Modification06/12/2001
en Engine Automatic Re-Ignition Modification03/13/2009
1 en Cancelled Door Seal Replacement03/15/2002
en Cyclic Grip Modification06/01/1999
en Main Transmission Lubrication Pump Modification04/09/2001
en VSCS Test Box02/02/2010
en Slant Console Installation05/15/2013
en LED Anti-Collision (Strobe) and Position Light Installation08/05/2013
1 en LED Anti-Collision (Strobe) and Position Light Installation05/21/2015
en Garmin G500H and Avionics Suite10/25/2013
1 en Garmin G500H and Avionics Suite05/14/2014
en Modification and Installation of a New Engine N2 and Rotor Tachometer Indicator01/23/2015
1 en Cancelled Door Seal Replacement03/15/2002
en Ballast Weight Installation03/31/1999
1 en Ballast Weight Installation02/28/2017
en Cyclic Grip Modification06/01/1999
en Fuel Cell Baffle Modification01/10/2001
en Main Transmission Lubrication Pump Modification04/09/2001
1 en 600N Yaw Stability Augmentation System (YSAS) Installation04/07/2006
en Fuselage Aft Section and Tailboom Modification ((AMOC 2006-08-12, AMOC 2008-20-05))01/12/2004
1 en Fuselage Aft Section and Tailboom Modification 04/13/2006
2 en Fuselage Aft Section and Tailboom Modification10/05/2006
3 en Fuselage Aft Section and Tailboom Modification 12/12/2011
en VSCS Test Box02/02/2010
en Modification of Engine Control Cable06/02/2010
1 en Modification of Engine Control Cable07/19/2010
en Slant Console Installation05/15/2013
en LED Anti-Collision (Strobe) and Position Light Installation08/05/2013
1 en LED Anti-Collision (Strobe) and Position Light Installation05/21/2015
en VSCS Actuator Mounting Bracket Repair11/11/1997
en Alternate Nutplate Installation11/11/1997
1 en Tub Shell (Fuselage) Inspection Panels, Modification to Install03/15/2002
2 en Tub Shell (Fuselage) Inspection Panels, Modification to Install09/22/2009
en Modification Instructions for NACA Inlet Assembly Installation11/11/1997
en Heat/Defog Upper Deck Through Fitting Modification01/12/1998
1 en Main Rotor Hub Pitchcase Abrasion Tape01/14/2001
1 en Main Rotor Blade Root End Abrasion Tape02/14/2001
en NAS1919 and NAS1921 Alternate Fastener with Drive Anvil11/06/1998
en Modification Instructions for 27 Ampere Hour Battery Option11/20/1998
1 en Modification Instructions for 27 Ampere Hour Battery Option03/15/2010
1 en Increased One Engine Inoperative (OEI) Torque Limit Modification12/13/2001
en Modification Landing/Hover Light Relocation03/17/1999
1 en Fire Extinguishing System Installation02/09/2000
4 en JAR OPS 3 Modification11/13/2001
en Windscreen Wipers -103 Installation06/17/1999
2 en Dual Pilot to Single Pilot Flight Control Conversion11/16/2000
en Heat/Defog Shut Off Valve Upgrade Modification07/26/1999
2 en Dual Essential Bus Relays Modification08/23/2001
en Range Extender Modification08/30/2000
2 en Removable Copilot Controls Modification05/02/2002
en Cabin Window Emergency Release Cover Modification02/26/2002
en Rain Gutter Modification06/17/2002
en Oil Cooling Inlet Duct Modification01/27/2003
en Cabin Door Modification04/23/2003
2 en Generator Cooling Modification08/14/2003
en Supplemental Fuel Cell (Check Valve) Modification05/27/2003
en Electrical Noise Suppression Modification06/23/2006
1 en Electrical Noise Suppression Modification03/08/2008
en MD900 (900 Configuration) to MD900 (902 Configuration with PW207E Engines) Change (Ref. Mod MD9000700001)12/20/2007
en Upper Deck Air Conditioning System Installation02/09/2008
en Supplemental Fuel System Installation (Ref. Mod MD9000700003)02/19/2008
en MD900 (902 Configuration) PW206E to PW207E Engine Conversion Modification11/02/2009
en VSCS Test Box02/02/2010
en Optional Preventative Modification/Repair of the Roof Rib Bracket02/05/2010
1 en Optional Preventative Modification/Repair of the Roof Rib Bracket06/25/2010
2 en Optional Preventative Modification/Repair of the Roof Rib Bracket04/23/2015
en Thruster Assembly Modification06/25/2010
1 en Thruster Assembly Modification02/09/2011
en Modification of Upper Damper Cap07/29/2010
en Remove and Replace the FS401.73 Cable Attachment Bracket Assembly09/25/2015
en Secondary Ejector Oil Breather Fitting Modification07/26/2010
en Modification of Main Rotor Upper Hub Assembly 900R2101006-105, -107, and -10907/31/2012
en Electrial Modification - LED Strobe11/22/2011
en Remove and Replace the Tailboom Attachment Ring03/09/2012
en Repair for the Upper Flange Bolt Holes in the Main Rotor Upper Hub Assembly10/25/2012
en Modification of the NACA Inlet Door Panel Assembly04/08/2013
en Increase of Operational Weight Limit to 6770 lb (3070.82 kg)03/15/2013
1 en Increase of Operational Weight Limit to 6770 lb (3070.82 kg)10/29/2013
en Modification of the Pitchcase Assemblies06/13/2014
en Installation of the Seat Tracks05/30/2014
en Installation or Modification for a New Cargo Hook12/17/2015
en Installation of Auxiliary Drain Valve, Fuel System Installation - PN 369H92255 Drain Kit10/03/1977
en Installation of Modified (Rotor Brake Handle) Trim Cover Panel Assembly11/18/1977
en Rework of Turbine Outlet Temperature (TOT) Indicator, PN 369A4521-5; and Torque Pressure Indicator, PN 369H4526-502/01/1978
en Installation - Engine Compressor Water Wash Kit, PN 369H9253702/06/1978
en Removal of Capacitor - Voltage Regulator, *AAE or LSI Model VR204; Installation of Varistor - Landing Light Relay, PN MS24166D102/06/1978
en Replacement of Plenum Wall Fittings - Torque Pressure Gage Tubing and Engine Oil Pressure Gage Tubing06/06/1978
en Field Inspection and Corrosion Repair - Main Rotor Drive Shaft, PN 369D2551007/05/1978
en Installation of Anti-Ice Fuel Filter, PN 369H9002209/08/1978
en Field Repair - Cyclic Trim Actuator Assemblies, PN 369A7170 Series and PN 369A7171 Series01/29/1979
en Installation of Air Baffle, Seal and Cover Assemblies - Transmission Compartment11/14/1978
en Installation of Stainless Steel Abrasion Tape, PN 369D21104 - Main Rotor Blade Leading Edge06/01/1979
en Extension of PN 369A8010-615 Overboard Vent Tube Engine Accessory Drive12/15/1978
en Field Repair - Trim Tab, Main Rotor Blade, PN 369D21100 Series02/15/1979
1 en Field Modification of PN 369D21002 Scissors Crank Assembly, Main Rotor Hub - Upgrade to PN 369D21002-21 Configuration08/15/1979
en Replacement of Radio Transmit/Intercom Trigger Switch; Rework of Cyclic Pitch Stick Grip Assembly05/10/1979
1 en Installation of Voltage Transient Suppressors11/26/1979
en Rework of Ground Handling Wheel Assemblies (Float Type)08/20/1979
en Installation of Fuselage Access Panels for Cyclic Trim Actuator Assemblies03/07/1980
en Installation of Cabin Heat Duct (Fiberglass) Assemblies, PN 369D22009-101 and 369D22009-10301/15/1980
en Rework of One-Way Lock Assembly, PN 369A7010 Series06/02/1980
1 en Drain Kit Installation, PN 369D28300-501 Engine Oil Tank and Oil Cooler; Drain Kit Installation, PN 369D290120 Main Rotor Transmission Oil Cooler02/06/1981
en Rework of Static Pressure Tube Installation to Minimize Altimeter Needle Oscillation12/08/1980
2 en Balancing of Main Rotor Hub Assembly, PN 369D2120009/24/1982
en Relocation of Auto Reignition Controls and Modification of System for Full-Time Operation02/22/1983
en Installation of PN 369H4237-21 Resistor Board Assembly for Easier, More Accurate Adjustment of TOT Indicator02/01/1982
en Modification Kit PN M50459-505 - Double Layer Abrasion Tape for PN 369D21100-505 and PN 369D21100-509 Main Rotor Blades03/10/1982
en Rework of PN 369A9905-Basic and PN 369A9905-3 Ground Handling Wheel Assemblies to Accommodate Installation of New PN 369D26107 Landing Gear Skid Fittings06/29/1982
en Installation and Replacement of Protective Sleeve (Speedi-Sleeve PN 084956) on Tail Rotor Transmission Output Gearshaft05/31/1983
en Oil Tank Filler Nozzle Strainer Assembly - P/N 369D2831804/15/1986
en Installation and Replacement of Protective Sleeve (Speedi-Sleeve PN 084956) on Tail Rotor Transmission Output Gearshaft05/31/1983
en Oil Tank Filler Nozzle Strainer Assembly - P/N 369D2831804/15/1986
en Oil Tank Filler Nozzle Strainer Assembly - P/N 369D2831804/15/1986
en Installation - Dual Bolt, Lower Vertical Stabilizer04/21/1970
en Modification. (Kit No. M50023) - Heat Control Valve Assembly12/21/1970
en Modification Kit (M50436) - Engine-Out Warning Horn Support05/18/1971
en Provisions for Drainage of Water Entrapment Areas08/23/1971
en Shock-Mounted Vertical-to-Horizontal Stabilizer Strut Assembly12/17/1971
en Relocation of Engine Fuel Supply Hose05/01/1972
en Rework - 369H2048 Door Latching System (Autolatching)07/24/1972
en Modification Kit PN M50445 - Fan Assembly, Engine Oil and Compartment Cooling11/05/1976
en Field Fix for Main Rotor Swashplate Uniball12/24/1976
en Tachometer Generator Assembly - Modification Kit PN M5004912/24/1976
en Door Latch Synchronization Check - Pilot and Cargo Door Autolatching Mechanisms09/12/1977
en Installation of Auxiliary Drain Valve, Fuel System Installation - PN 369H92255 Drain Kit10/03/1977
en Removal of Capacitor - Voltage Regulator, *AAE or LSI Model VR204; Installation of Varistor - Landing Light Relay, PN 369A4558 or MSI4166D102/06/1978
en Installation -- Tail Rotor Pitch Control Links PN 369A1807-504/03/1978
en Replacement of Plenum Wall Fittings - Torque Pressure Gage Tubing and Engine Oil Pressure Gage Tubing06/06/1978
en Field Inspection and Corrosion Repair - Main Rotor Drive Shaft, PN 369A550007/05/1978
1 en Installation of Anti-Ice Fuel Filter, PN 369H90022-50111/24/1980
en Field Repair - Cyclic Trim Actuator Assemblies, PN 369A7170 Series and PN 369A7171 Series01/29/1979
en Field Repair - Trim Tab, Main Rotor Blade, PN 369A1100 Series02/15/1979
en Installation of Cabin Heat Duct (Fiberglass) Assemblies PN 369D22099-10101/15/1980
en Rework of One-Way Lock Assembly, PN 369A7010 Series06/02/1980
en Conversion from Pressure Switch Activated to EPO Activated Auto-Reignition System08/01/1980
en Drain Kit Installation, PN 369D28300-501 Engine Oil Tank and Oil Cooler08/18/1980
en Relocation of Auto Reignition Controls and Modification of System for Full-Time Operation02/22/1983
en Rework of Static Pressure Tube Installation to Minimize Altimeter Needle Oscillation12/08/1980
en Installation of Engine Air Inlet Deflector Kit, PN M30287-50104/21/1981
en Installation of PN 369H4237-21 Resistor Board Assembly for Easier, More Accurate Adjustment of TOT Indicator02/01/1982
en Rework of PN 369A9905-Basic and PN 369A9905-3 Ground Handling Wheel Assemblies to Accommodate Installation of New PN 369D26107 Landing. Gear Skid Fittings06/29/1982
en Installation and Replacement of Protective Sleeve (Speedi-Sleeve PN 084956) on Tail Rotor Transmission Output Gearshaft05/31/1983
en Oil Tank Filler Nozzle Strainer Assembly - P/N 369D2831804/15/1986
User Guides
NameRevisionLangSubjectDate
en 902 Configuration Equipped with P&WC 207E Engines - Ground Based Maintenance Computer (GBMC)02/19/2001
Miscellaneous
NameRevisionLangSubjectDate
en Destroyed Aircraft Listing01/25/2010
en Service and Operations Report ((Instructions))09/30/2003
2 en Service and Operations Report ((Instructions))
3 en Service and Operations Report ((Instructions))
en Helicopter Incidents, Accidents and Investigations07/31/2007