Service Information: Schweizer
Alternative Names: (Hughes Helicopters)
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Table of Contents
Illustrated Parts Catalogs • Instructions • Service Bulletins • Service Information Letters • Service Information Notices • Service Letters • Service Notices • Weight & Balance Information
| Name | Revision | Lang | Subject | Date |
|---|---|---|---|---|
| IPC CSP-C-7 | 1 | en | 269A, TH-55A, A-1, B & C | 06/01/1982 |
| IPC CSP-C-7 | Reiss 2 | en | 269A, TH-55A, A-1, B & C | 02/01/1978 |
| IPC CSP-C-9 | revised | en | 269C (S/Ns 1166 and Subsequent) | 10/03/2008 |
| IPC CSP-C1-6 | revised | en | 269C-1 | 05/15/2009 |
| IPC CSP-C1-6 | revised | en | 269C-1 | 05/28/2010 |
| IPC CSP-D-6 | reissued | en | 269D/269D Configuration "A" | 05/19/2006 |
| Name | Revision | Lang | Subject | Date |
|---|---|---|---|---|
| II F-236 | 1 | en | Note & Safety: 1D112 Series Tow Release Hook Assembly | 07/19/2011 |
| II F-236 | revised | en | Note & Safety: 1D112 Series Tow Release Hook Assembly | 09/18/1984 |
| II SA-269K-057-1 | en | 269 Series: Main Rotor Thrust Bearing Kit | 06/09/1994 |
| Name | Revision | Lang | Subject | Date |
|---|---|---|---|---|
| SB 1 | en | Springs Used in the 1-26 Tow Release Mechanism | ||
| SB 2 | en | Failures in the 1-26 Wheel Assembly | ||
| SB 65 | en | Wing Fitting Corrosion | 10/16/1978 | |
| SB 75 | A | en | Aileron Bellcrank Inspection and Bushing Installation | 01/25/1980 |
| SB 78 | en | Controls Installation, Fuel Shut Off | 01/26/1982 | |
| SB 85 | en | Inspection of Elevator Control System Pushrods for Corrosion and Cracks | 06/01/1989 | |
| SB 100 | en | Short Aileron Control Push Rods Subject to Handling and Wind Damage | 10/28/1947 | |
| SB 101 | en | Replacement of the Adjustable End of the Short Aileron Push Rod 19B-120-9A by a Fixed End | 06/09/1949 | |
| SB 102-23-1 | en | Spoiler Control Jamming | 06/02/1959 | |
| SB 102-23-2 | en | Fin and Rudder Lower Hinge - Excessive Wear | 06/29/1971 | |
| SB 102-26-3 | en | Excessive Wear on the 26B120-2A Elevator Control Cable at the 1A-12S Fairlead on the Fin Spar | 01/03/1958 | |
| SB 102-26-4 | en | Seat Back Disengaged | 08/17/1962 | |
| SB 102-26-5 | en | Weld Failure at the Forward Control Torque Tube Bearing Bracket | 08/20/1965 | |
| SB 102-26-6 | en | Fuselage Frames were Built with the Rudder Cable Fairlead Bracket, RH, Welded to the Upper Cross Member rather than to the RH Vertical Member | 12/30/1968 | |
| SB 102-26-7 | en | Rudder Hinge, Lower, Attachment to Fin Spar | 02/11/1971 | |
| SB 102-26-8 | en | Inspection of Control Stick Pivot Bolt | 12/18/1975 | |
| SB 102-33-2 | 3 | en | Variations in the Hardware Attaching the Vertical Fin Spar to the Fuselage Structure | 03/17/1978 |
| SB 102-33-3 | en | Removeable Ballast Installation, Weight & Balance | 07/15/1983 | |
| SB B-233 | en | Mandatory One Time Inspection - Engine Oil Cooler | 02/10/1992 | |
| SB B-234 | en | Mandatory Inspection and Modification of Longitudinal Trim Mounting Plate and Trim Arm Stop | 12/16/1991 | |
| SB B-235 | 1 | en | Mandatory Possible Restriction of Throttle Controls | 03/20/1992 |
| SB B-236 | en | Mandatory Inspection of Low Tip Speed Tail Rotor Swashplate Bellcrank Assembly Hole | 09/04/1991 | |
| SB B-237 | 1 | en | Mandatory Possible Restriction of Cyclic Pitch Control | 05/30/1991 |
| SB B-238 | 1 | en | Mandatory Inspection and Retirement of 269A2324(BSC) and -7 Tailboom Center Attachment Fittings | 11/07/1991 |
| SB B-239 | 1 | en | Mandatory Inspection and Retirement of 269A2324-7 Tailboom Center Attachment Fitting | 11/07/1991 |
| SB B-240 | en | Mandatory One Time Inspection - Thrust Bearing Nut P/N 269A1315 with Possible Incomplete Threads | 05/08/1992 | |
| SB B-241 | en | Mandatory Inspection of Seat Belt Snap Hook End Fittings | 02/10/1992 | |
| SB B-242 | en | Mandatory One Time Inspection of Main Rotor Blades | 02/10/1992 | |
| SB B-243 | en | Mandatory Corrosion Damage Inspection of Main Rotor Drive Shaft P/N 269A5305 | 05/08/1992 | |
| SB B-244 | 2 | en | Mandatory Possible Deterioration of Certain Main Transmission Pinion Assembly Teeth and Ring Gear Teeth | 02/19/1996 |
| SB B-244 | 3 | en | Mandatory Possible Deterioration of Certain Main Transmission Pinion Assembly Teeth and Ring Gear Teeth | 04/06/1998 |
| SB B-245 | en | Mandatory Maintenance and Operation Requirements for Safe Operation of Surplus TH-55A Helicopters | 05/08/1992 | |
| SB B-247 | en | Mandatory Tail Rotor Pedal Bulkhead (Floor Beam) Gusset | 10/30/1992 | |
| SB B-248 | en | Mandatory Bendix Fuel Injector System Model RSA-7AA1, P/L 2524347 (Lycoming P/N 77885) and Precision Airmotive Corporation Service Bulletin PRS-94 and PRS-94 Supp 1 | 11/07/1991 | |
| SB B-249 | en | Mandatory One-Time Inspection of Throttle Override Bellcrank Assembly | 03/20/1992 | |
| SB B-250 | en | Mandatory Triple-Latch Door - Lower Latch Bolt and Collective Friction Guide Assembly Interference | 03/20/1992 | |
| SB B-251 | en | Mandatory Inspection of Clutch Cable Assembly and Terminal End (P/N AN669L3RH or MS21260L3RH) | 03/20/1992 | |
| SB B-252 | en | Mandatory Precision Airmotive Corporation Bulletins PRS-97 and PRS-98 | 06/01/1992 | |
| SB B-253 | en | Mandatory Tailboom Support Struts Corrosion Inspection | 09/03/1993 | |
| SB B-255 | 1 | en | Mandatory Main Rotor Drive Shaft Inspection | 02/01/1993 |
| SB B-256 | 2 | en | Mandatory Inspection of Clutch Control Spring Assembly Installation | 06/11/1993 |
| SB B-257 | 1 | en | Mandatory One-Time Inspection of Lower Coupling Drive Shafts, and New Engine/Rotor Tachometer Markings | 05/21/1993 |
| SB B-259 | 2 | en | Mandatory 50-Hour Inspection of Main Rotor Blade Abrasion Strip | 10/02/1998 |
| SB B-260 | en | Mandatory Corrosion Inspection and Treatment of Lower Coupling Drive Shaft | 10/19/1994 | |
| SB B-261 | en | Mandatory Periodic Inspection of Main Transmission Pinion Input Shaft Assembly | 10/19/1994 | |
| SB B-263 | en | Mandatory Inspection of Aft Cluster Fitting | 05/24/1995 | |
| SB B-264 | en | Mandatory One-Tune Inspection of Tail Rotor Blades | 09/15/1995 | |
| SB B-265 | 1 | en | Mandatory 239A6050-005 LTS Tail Rotor Pitch Control Assembly, Torque Verification of 269A6258 Nut, and Application of Torque Stripes | 07/23/1996 |
| SB B-266 | en | Mandatory Textron Lycoming Service Bulletin No. 525 | 10/15/1996 | |
| SB B-267 | en | Mandatory Textron Lycoming Service Bulletin No. 527C | 07/24/1997 | |
| SB B-268 | en | Mandatory One-Time Inspection of Main Rotor Hub and Shaft, and New Assembly Procedure | 06/24/1998 | |
| SB B-269 | 1 | en | Mandatory Replacement of Old Style Tail Rotor Drive Fork Hinge Bolt and Clarification of Torque Value | 12/26/2002 |
| SB B-270 | 2 | en | Mandatory Inspection of 269A5104-007 Main Transmission Ring Gears with Specific Serial Numbers and Reporting of Inspection Results | 03/12/2001 |
| SB B-271 | en | Mandatory Tail Rotor Swash Plate Shaft Inspection | 03/12/1999 | |
| SB B-271 | 1 | en | Mandatory Tail Rotor Swash Plate Shaft Inspection | 10/14/1999 |
| SB B-272 | en | Mandatory Inspection/Replacement Criteria for Certain Upper H-Frame Bearings (Schweizer P/N 269A5050-78) | 02/18/2000 | |
| SB B-273 | en | Mandatory Replacement of Shoulder Harness and Inertia Reel Assembly | 08/23/2000 | |
| SB B-274 | en | Mandatory Textron Lycoming Special Advisory No. 63-1200 | 01/02/2001 | |
| SB B-275 | en | Mandatory One-Time Inspection for Condition and Modification of Certain Idler Pulley Support Assemblies | 03/12/2001 | |
| SB B-276 | en | Mandatory Main Rotor Swashplate Bearing P/N 269A1301 | 10/26/2001 | |
| SB B-277 | en | Mandatory One-Time Inspection of Certain 269A2234-3 (LH) and 269A2235-3 (RH) Aft Cluster Fittings | 01/25/2002 | |
| SB B-278 | en | Mandatory 269A2234 BSC and 269A2235 BSC Aft Cluster Fitting Modification | 09/06/2002 | |
| SB B-280 | 1 | en | Mandatory Modification of 269A5590-1 and 269A5483-1/-3 Clutch Spring Assemblies | 04/06/2004 |
| SB B-281 | en | Mandatory Throttle Governor Bellcrank | 09/05/2003 | |
| SB B-282 | 1 | en | Mandatory Support Bracket (269A8460-3) Throttle Bellcrank, Inspection for Cracks | 09/24/2004 |
| SB B-283 | 1 | en | Mandatory Inspection and Modification of 269A7316-13 Lateral Control Trim Assembly | 03/04/2005 |
| SB B-284 | 1 | en | Mandatory Modification of 269A4564-5 and -7 Linear Actuators | 09/18/2006 |
| SB B-285 | 1 | en | Mandatory Modification of Locknut/Hoist Eye Assembly | 03/17/2006 |
| SB B-286 | en | Mandatory Tail Rotor Swashplate Bellcrank Assembly Safety Washer Installation | 10/04/2006 | |
| SB B-287 | en | Mandatory Main Transmission Input Pinion Corrosion Protection | 03/07/2008 | |
| SB B-287 | 1 | en | Mandatory Main Transmission Input Pinion Corrosion Protection | 08/24/2010 |
| SB B-288 | en | Mandatory Tail Rotor Drive Shaft Splined Fittings Inspection | 01/30/2008 | |
| SB B-288 | 1 | en | Mandatory Tail Rotor Drive Shaft Splined Fittings Inspection | 04/21/2008 |
| SB B-289 | en | Mandatory Installation of Single Wheel Ground Handling Wheel Locking Device | 07/14/2008 | |
| SB B-289 | 1 | en | Mandatory Installation of Single Wheel Ground Handling Wheel Locking Device | 09/26/2008 |
| SB B-290 | en | Mandatory Landing Gear Skid Tube Aft Sleeve Inspection | 09/26/2008 | |
| SB B-291 | en | Mandatory Fuel Strainer Leak Check | 10/03/2008 | |
| SB B-292 | en | Mandatory Modification of Cabin Door Hinges | 10/24/2008 | |
| SB B-293 | en | Mandatory Incorrect Grease Identification in Certain Serial Number Helicopters | 01/09/2009 | |
| SB B-294 | en | Mandatory Incorrect Bushing Used in 269C Flight Controls | 08/24/2010 | |
| SB B-295 | en | Mandatory Inspection and Modification of Tailboom Support Strut Expandable Bolt | 12/21/2010 | |
| SB C1B-001 | 1 | en | Mandatory 269A6050-005 Tail Rotor Pitch Control Assembly, Torque Verification of 269A6258 Nut, and Application of Torque Stripes | 07/23/1996 |
| SB C1B-002 | en | Mandatory One-Time Inspection of Tail Rotor Blades | 01/29/1997 | |
| SB C1B-003 | en | Mandatory 50-Hour Inspection of Main Rotor Blade Abrasion Strip | 01/28/1997 | |
| SB C1B-004 | en | Mandatory Textron Lycoming Service Bulletin No. 527C | 07/24/1997 | |
| SB C1B-005 | 1 | en | Mandatory Primer Hose Replacement | 07/14/1998 |
| SB C1B-006 | en | Mandatory Inspection of Main Transmission Pinion Splines; New Torque Check Requirement for Aft Pinion Nut | 03/20/1998 | |
| SB C1B-007 | en | Mandatory One-Time Inspection of Main Rotor Hub and Shaft, and New Assembly Procedure | 07/14/1998 | |
| SB C1B-008 | 1 | en | Mandatory Inspection of 269A5104-007 Main Transmission Ring Gears with Specific Serial Numbers and Reporting of Inspection Results | 01/08/2001 |
| SB C1B-009 | en | Mandatory Tail Rotor Swash Plate Shaft Inspection | 03/12/1999 | |
| SB C1B-009 | 1 | en | Mandatory Tail Rotor Swash Plate Shaft Inspection | 10/14/1999 |
| SB C1B-010 | en | Mandatory Inspection/Replacement Criteria for Certain Upper H-Frame Bearings (Schweizer P/N 269A5050-78) | 02/18/2000 | |
| SB C1B-011 | en | Mandatory Textron Lycoming Special Advisory No. 62-1200 | 01/02/2001 | |
| SB C1B-012 | en | Mandatory One-Time Inspection for Condition and Modification of Certain Idler Pulley Support Assemblies | 03/12/2001 | |
| SB C1B-013 | 1 | en | Mandatory Main Rotor Swashplate Bearings P/N 269A1301 | 11/14/2001 |
| SB C1B-014 | en | Mandatory One-Time Inspection of 269A2172-5 Aft Mast Support Tube Forward Fitting | 08/09/2002 | |
| SB C1B-015 | en | Mandatory Modification of 269A5590-1 Clutch Spring Assembly | 11/04/2003 | |
| SB C1B-016 | 1 | en | Mandatory Support Bracket (269A8460-1) Throttle Bellcrank, Inspection for Cracks | 09/24/2004 |
| SB C1B-017 | 1 | en | Mandatory Inspection and Modification of 269A7316-13 Lateral Control Trim Assembly | 03/04/2005 |
| SB C1B-018 | 1 | en | Mandatory Modification of Locknut/Hoist Eye Assembly | 03/17/2006 |
| SB C1B-019 | 1 | en | Mandatory Tail Rotor Swashplate Bellcrank Assembly Safety Washer Installation | 01/29/2007 |
| SB C1B-020 | en | Mandatory Slick Service Bulletin SB1-06A | 11/29/2006 | |
| SB C1B-021 | en | Mandatory Main Transmission Input Pinion Corrosion Protection | 03/07/2008 | |
| SB C1B-021 | 1 | en | Mandatory Main Transmission Input Pinion Corrosion Protection | 08/24/2010 |
| SB C1B-022 | en | Mandatory Tail Rotor Drive Shaft Splined Fittings Inspection | 01/30/2008 | |
| SB C1B-022 | 1 | en | Mandatory Tail Rotor Drive Shaft Splined Fittings Inspection | 04/21/2008 |
| SB C1B-023 | en | Mandatory Reprint of Precision Airmotive Mandatory Service Bulletin | 04/28/2008 | |
| SB C1B-024 | en | Mandatory Throttle Control Restriction | 07/14/2008 | |
| SB C1B-024 | 1 | en | Mandatory Throttle Control Restriction | 11/24/2008 |
| SB C1B-025 | en | Mandatory Installation of Single Wheel Ground Handling Wheel Locking Device | 07/14/2008 | |
| SB C1B-025 | 1 | en | Mandatory Installation of Single Wheel Ground Handling Wheel Locking Device | 09/26/2008 |
| SB C1B-026 | en | Mandatory Landing Gear Skid Tube Aft Sleeve Inspection | 09/26/2008 | |
| SB C1B-027 | en | Mandatory Fuel Strainer Leak Check | 10/03/2008 | |
| SB C1B-028 | en | Mandatory Modification of Cabin Door Hinges | 10/24/2008 | |
| SB C1B-029 | en | Mandatory Incorrect Grease Identification in Certain Serial Number Helicopters | 01/09/2009 | |
| SB C1B-030 | en | Mandatory Center Control Cover Contacting Lateral Cyclic Control Rod | 08/24/2010 | |
| SB C1B-031 | en | Mandatory Incorrect Bushing Used in 269C-1 Flight Controls | 08/24/2010 | |
| SB C1B-032 | en | Mandatory Inspection and Modification of Tailboom Support Strut Expandable Bolt | 12/21/2010 | |
| SB DB-001 | 1 | en | Mandatory 50-Hour Inspection of Main Rotor Blade Abrasion Strip | 09/28/1995 |
| SB DB-002 | 1 | en | Mandatory 269A6050-005 Tail Rotor Pitch Control Assembly, Torque Verification of 269A6258 Nut, and Application of Torque Stripes | 07/23/1996 |
| SB DB-003 | en | Mandatory One-Time Inspection of Tail Rotor Blades | 01/29/1997 | |
| SB DB-004 | 3 | en | Mandatory Main Rotor Hub and Shaft Inspection and New Assembly Procedure | 11/03/1998 |
| SB DB-005 | en | Mandatory Replacement of Main Rotor Hub Hoisting Eye | 07/24/1998 | |
| SB DB-006 | 1 | en | Mandatory Inspection of 269A5104-007 Main Transmission Ring Gears with Specific Serial Numbers and Reporting Inspection Results | 01/08/2001 |
| SB DB-007 | en | Mandatory Tail Rotor Swash Plate Shaft Inspection | 03/12/1999 | |
| SB DB-007 | 1 | en | Mandatory Tail Rotor Swash Plate Shaft Inspection | 10/14/1999 |
| SB DB-008 | en | Mandatory Inspection/Replacement Criteria for Certain Upper H-Frame Bearings (Schweizer P/N 269A5050-78) | 02/18/2000 | |
| SB DB-009 | en | Mandatory Replacement of Forward and Aft Kaflex Drive Shaft Coupling Bolts | 09/28/2001 | |
| SB DB-010 | en | Mandatory Main Rotor Swashplate Bearings P/N 269A1301 | 10/26/2001 | |
| SB DB-011 | 1 | en | Mandatory Horizontal Stabilizer, Inspection of End Plate and Attachment | 03/20/2003 |
| SB DB-012 | en | Mandatory Inspection and Modification of 269A7316-13 Lateral Control Trim Assembly | 02/08/2005 | |
| SB DB-013 | en | Mandatory Fuel Pump Drain Tube | 04/26/2005 | |
| SB DB-014 | 2 | en | Mandatory Modification of Locknut/Hoist Eye Assembly | 04/19/2006 |
| SB DB-015 | 1 | en | Mandatory Modification of CEF 8618M33 Linear Actuator | 04/19/2006 |
| SB DB-016 | en | Mandatory Tail Rotor Swashplate Bellcrank Assembly Safety Washer Installation | 10/04/2006 | |
| SB DB-017 | en | Mandatory Installation of Latch Assembly Fuel Cell Cover Kit | 11/13/2006 | |
| SB DB-018 | 1 | en | Mandatory Inspection for Fatigue Cracking in 269D330-1 Aft Fuselage Assembles and Installation of Stabilizer Mount Doublers | 11/17/2006 |
| SB DB-018 | 2 | en | Mandatory Inspection for Fatigue Cracking in 269D330-1 Aft Fuselage Assembles and Installation of Stabilizer Mount Doublers | 07/13/2007 |
| SB DB-018 | 3 | en | Mandatory Inspection for Fatigue Cracking in 269D330-1 Aft Fuselage Assembles and Installation of Stabilizer Mount Doublers | 12/13/2007 |
| SB DB-019 | en | Mandatory Main Transmission Input Pinion Corrosion Protection | 03/07/2008 | |
| SB DB-019 | 1 | en | Mandatory Main Transmission Input Pinion Corrosion Protection | 08/24/2010 |
| SB DB-020 | en | Mandatory Alignment Inspection - Kaflex Shaft to Engine Output Shaft | 11/01/2007 | |
| SB DB-021 | en | Mandatory Restrictions in Rolls-Royce Turbine Engine Operation | 10/24/2007 | |
| SB DB-022 | en | Mandatory Inspection of Tail Rotor Pedal Attachment Structure and Installation of Tail Rotor Pedal Attachment Reinforcement Kit | 11/12/2007 | |
| SB DB-023 | en | Mandatory Tail Rotor Drive Shaft Splined Fittings Installation | 01/30/2008 | |
| SB DB-023 | 1 | en | Mandatory Tail Rotor Drive Shaft Splined Fittings Installation | 04/21/2008 |
| SB DB-024 | en | Mandatory Installation of Single Wheel Ground Handling Wheel Locking Device | 07/14/2008 | |
| SB DB-024 | 1 | en | Mandatory Installation of Single Wheel Ground Handling Wheel Locking Device | 09/26/2008 |
| SB DB-025 | en | Mandatory Landing Gear Skid Tube Aft Sleeve Inspection | 09/26/2008 | |
| SB DB-026 | en | Mandatory Modification of Cabin Door Hinges | 12/08/2008 | |
| SB DB-027 | en | Mandatory Inspection of Engine/Transmission Oil Cooler Impeller | 10/24/2008 | |
| SB DB-027 | 1 | en | Mandatory Inspection of Engine/Transmission Oil Cooler Impeller | 06/29/2009 |
| SB DB-027 | 2 | en | Mandatory Inspection of Engine/Transmission Oil Cooler Impeller | 09/01/2009 |
| SB DB-029 | en | Mandatory Longitudinal Trim Assembly Spring Attachment | 02/13/2009 | |
| SB DB-031 | en | Mandatory Oil Cooler Impeller Blade Containment Kit | 09/01/2009 | |
| SB DN-87 | en | Mandatory Replacement of PN 369A7706-3 RPM Governor Lever Control Rod | 05/15/1981 | |
| SB DN-125 | en | Mandatory Main Rotor Swashplate Bearing, PN 369A7003-3 Inspection and Possible Replacement | 12/23/1983 | |
| SB N-121 | 2 | en | Mandatory Inspection and Rework Tail Rotor Control System, Rudder Pedal Installation | 04/10/2003 |
| SB SA-001 | en | One-Time Inspection of Tow Release Assembly; Daily Inspection of Tow Release Assembly: Pilot's Preflight Inspection of Tow Release Assembly; 100-Hour Inspection of Tow Release Assembly | 10/03/1986 | |
| SB SA-001 | 3 | en | One-Time Inspection of Tow Release Assembly; Daily Inspection of Tow Release Assembly: Pilot's Preflight Inspection of Tow Release Assembly; 100-Hour Inspection of Tow Release Assembly | 01/31/1988 |
| SB SA-001 | 6 | en | One-Time Inspection of Tow Release Assembly; Daily Inspection of Tow Release Assembly: Pilot's Preflight Inspection of Tow Release Assembly; 100-Hour Inspection of Tow Release Assembly | 12/29/2009 |
| SB SA-002 | en | Daily Inspection of Aircraft Structures; Detailed Visual Inspection of Tail Rudder, Elevators, Vertical Tail Surface (Tail Fin) and Fuselage | 03/25/1987 | |
| SB SA-003 | en | Aerobatics in Schweizer Sailplanes | 03/25/1987 | |
| SB SA-004 | en | Visual Inspection of 26B-123-1A Elevator Push Rod Assembly for Corrosion; Possible Replacement of 26B-123-1A Push Rod with 26147B Push Rod | 06/16/1987 | |
| SB SA-005 | 1 | en | Identification and Possible Replacement of Tow Release Arm | 01/31/1988 |
| SB SA-006 | en | Replacement of Seat Back Adjustment Bracket | 03/01/1989 | |
| SB SA-007 | en | Improper Rear Seat Loading | 10/18/1988 | |
| SB SA-008 | en | Periodic Inspection of Vertical Fin Forward Spar | 05/11/1995 | |
| SB SA-009 | en | Inspection of Aileron Push-Rod | 01/12/1998 | |
| SB SA-010 | en | Periodic Inspection of Vertical Fin - Rear Spar | 11/11/1999 | |
| SB SA-010 | 1 | en | Periodic Inspection of Vertical Fin - Rear Spar | 04/20/2004 |
| SB SA-011 | en | Inspection of Elevator Control Cable Assembly | 01/30/2004 | |
| SB SA-012 | en | One-Time Inspection of Seat Pan Installation | 09/25/2003 | |
| SB SA-102-33-1 | 1 | en | Inspection of Fuselage Frame Structure | 06/20/1988 |
| Name | Revision | Lang | Subject | Date |
|---|---|---|---|---|
| SIL L-1 | en | Input Spline Coupling P/N 5607 Time Increase - Tail Rotor Transmission | 06/08/1966 | |
| SIL L-2 | en | Recommended Overhaul Periods - Rotorcraft Powerplant | 06/08/1966 | |
| SIL L-3 | 1 | en | Interim Revision - Handbook of Maintenance Instructions (HMI) RE: 1200 Hour Periodic Inspection of Main Rotor Gear Drive Assembly | 10/05/1966 |
| SIL L-5 | en | Replacement of Thermostatic Oil Cooler By-Pass Valves, per Avco, Lycoming Division, Service Bulletin No. 304A (Red Bordered Mandatory) Dated June 24, 1966 | 08/01/1966 | |
| SIL L-6 | 1 | en | Bendix Fuel Injection System, RSA Series, Trouble Shooting Technique for Identifying Fuel to Air Seal Leak, which could Affect Engine Idle | |
| SIL L-7 | en | Belt Drive Clutch Engagement Spring P/N 5476 - Availability and Utilization | 08/22/1966 | |
| SIL L-8 | en | Illumination Intensity - Engine Instruments | 10/04/1966 | |
| SIL L-10 | en | Pressure Variation with Temperature - Amphibious Float Landing Gear | 11/07/1966 | |
| SIL L-11 | en | Intake Pipe Replacement per Avco - Lycoming Division Service Instruction No. 1162, Dated September 16, 1966 | 12/01/1966 | |
| SIL L-12 | en | Interim Revision - Handbook of Maintenance Instructions (HMI) RE: Main and Tail Rotor Overspeed Criteria | 12/05/1966 | |
| SIL L-13 | en | Interim Revision - Handbook of Maintenance Instructions (HMI) RE: Limited Life and Component Overhaul List | 01/11/1967 | |
| SIL L-14 | en | Interim Revision - Handbook of Maintenance Instructions (HMI) RE: Inspection - Sudden Stoppage Drive System | 02/20/1967 | |
| SIL L-15 | 1 | en | Definition - Limited Life Parts | 02/21/1967 |
| SIL L-16 | en | Interim Revision - Handbook of Maintenance Instructions (HMI) Re: Maintenance Instructions for Low Tip Speed Tail Rotor Assembly | 08/23/1967 | |
| SIL L-17 | en | Lubrication - Upper Pulley Sprag Clutch: Inspection - Main and Tail Rotor Transmissions | 09/21/1967 | |
| SIL L-19 | en | Replacement - Internal Seal, Fuel Drain Valve | 04/01/1967 | |
| SIL L-21 | en | Chemical Attack - Re: Bolteron and Royalite Parts | 04/01/1967 | |
| SIL L-22 | en | Interim Revision - Handbook of Maintenance Instructions RE: Installation Pitch Control Rod, Inspection Pitch Bearing Cases, Main Rotor Swashplate Assembly and Swashplate, Scissors Link | 08/22/1967 | |
| SIL L-23 | en | Approved Fuels for Allison Model 250 Series Engine | 06/16/1967 | |
| SIL L-24 | en | Proper Height of Contact Springs in - 200 Bendix Magneto Distributor Block | 05/05/1967 | |
| SIL L-26 | en | Interim Revision - Handbook of Maintenance Instructions (HMI) RE: B1145-1 Main Rotor Blade Assembly | 07/07/1967 | |
| SIL L-27 | en | Allison Model 250 Engine - Sales and Service | 07/10/1967 | |
| SIL L-29 | en | Interim Revision (HMI) RE: Lower Coupling Drive Shaft (P/N 269A5504 Basic and 269A5504-5 Shaft Assembly) - Wear Tolerances | 09/22/1967 | |
| SIL L-30 | en | New Tail Rotor Blade, P/N 6124-9 | 09/25/1967 | |
| SIL L-31 | en | Interim Revision - Handbook of Maintenance Instructions (HMI) RE: Inspection and Maintenance Procedures for Landing Gear Oleo Dampers | 10/02/1967 | |
| SIL L-32 | en | Bendix Corporation; RS Fuel Injection Service Bulletin No. 23 (dated), 10 Jan 1967 | 10/31/1967 | |
| SIL L-33 | en | Interim Revision - Handbook of Maintenance Instruction RE: Overhaul Cycle, Tail Rotor Drive Transmission Assembly | 11/17/1967 | |
| SIL L-34 | en | Interim Revision (HMI) RE: Special Torque Data - Forward Nut, Lower Pulley Drive Shaft | 12/13/1967 | |
| SIL L-35 | en | Interim Revision - Handbook of Maintenance Instructions RE: 25 Hour Periodic Inspection | 12/14/1967 | |
| SIL L-36 | en | Lycoming Service Instructions No. 1141. Dated 20 October 1967 - Subject: Replacement of Worn Starter Ring Gears | 12/28/1967 | |
| SIL L-37 | en | Interim Revision - Handbook of Maintenance Instructions (HMI) Re: Overhaul Cyclic; Main Rotor Gear Drive Assembly | 01/02/1968 | |
| SIL L-38 | 1 | en | Interim Revision - Handbook of Maintenance Instructions (HMI) Re: Inspection - Possible Retirement, Main Rotor Blades | 07/15/1968 |
| SIL L-39 | en | Interim Revision - Handbook of Maintenance Instructions (HMI) Re: Inspection - Cable Belt Drive Clutch Control | 02/27/1968 | |
| SIL L-40 | en | Interim Revision - Handbook of Maintenance Instructions (HMI) Re: 400 Hour Inspection - Droop Stop Retainer Ring | 03/14/1968 | |
| SIL L-41 | en | Interim Revision - Handbook of Maintenance Instructions (HMI) Re: 600 Hour Inspection - Droop Stop Retainer Ring | 03/14/1968 | |
| SIL L-42 | en | Interim Revision - Handbook of Maintenance Instructions (HMI) Re: Limited Life; Main Rotor Driveshaft and Main Rotor Gear Box Pinion Assembly | 03/14/1968 | |
| SIL L-43 | en | Mixing Main Rotor Transmission Gears | 04/05/1968 | |
| SIL L-44 | en | Interim Revision - Handbook of Maintenance Instructions (HMI) Re: Sudden Stoppage Inspection; Lateral Control Bellcrank PN 269A7506 | 04/18/1968 | |
| SIL L-46 | 2 | en | Bendix Energy Controls Division - Field Service Representation | 02/19/1973 |
| SIL L-47 | en | Interim Revision - Handbook of Maintenance Instructions (HMI) Re: Wear Tolerances - PN 269A5618 Output Shaft, Tail Rotor Transmission | 07/16/1968 | |
| SIL L-48 | en | Balance Weight Installation - Main Rotor Blades | 09/11/1968 | |
| SIL L-49 | 1 | en | Grommet (269A2309), Tail Rotor Control Rod Guide Assembly | 03/12/1969 |
| SIL L-51 | en | Main Rotor Blade Categories A, B, C and D | 10/18/1968 | |
| SIL L-52 | en | Parts Replacement Kit PN 269A5540-901 Belt Drive Clutch Damper Assembly | 11/22/1968 | |
| SIL L-53 | en | Inspection of Landing Gear Skid Assembly | 12/09/1968 | |
| SIL L-54 | en | Tail Boom Spoiler (P/N 269A2320-5) | 02/20/1969 | |
| SIL L-55 | en | Tailboom Center Support (Saddle) Fitting PN 269A2324-7 | 04/29/1970 | |
| SIL L-56 | en | Oil Pressure Limitations | 06/12/1970 | |
| SIL L-57 | en | New Attaching Hardware - Engine Cooling Shroud Side Panels | 11/04/1970 | |
| SIL L-58 | en | New Heavy Wall Driveshaft for High Speed Tail Rotor System | 04/19/1971 | |
| SIL L-59 | en | Ordering Replacement Engine Air Intake Pipes | 07/06/1971 | |
| SIL L-60 | 1 | en | Timing of Magneto and Engine Ignition System | 04/06/1972 |
| SIL L-61 | en | Increased Overhaul Time Interval for Main and Tail Rotor Transmissions | 08/23/1971 | |
| SIL L-62 | en | Bendix Electrical Components Division - Service Bulletin No. 551 (dated), September 1971 - New Distributor Block Lubricant | 10/08/1971 | |
| SIL L-64 | en | Lamp Replacement - PN 269A4322 Anticollision Light Assembly (Grimes) | 12/13/1971 | |
| SIL L-65 | en | Abrasion Tape Application - Main Rotor Blades PN 269B1145, -1 and 269A1160 | 01/20/1972 | |
| SIL L-66 | en | Desert Oil Cooler Kit | 02/14/1972 | |
| SIL L-67 | en | Improved Main Rotor Blade Damper Assembly, P/N 269A1927-5 | 04/06/1972 | |
| SIL L-68 | 1 | en | Lycoming Service Bulletins, No. 336B (dated), 19 June 1972 and No. 343A (dated), 18 February 1972 - Periodic Inspection - Lubrication and Parts Replacement for Bendix S4LN-1208 Magnetos | 08/07/1972 |
| SIL L-69 | en | Tail Rotor Gearbox PN 269A6027 - Interchangeability Between Model 269 Series Helicopters | 05/01/1972 | |
| SIL L-70 | en | Lycoming Service Bulletin No. 336B (dated), 19 June 1972 Re: Periodic Inspection and Lubrication of Magneto Distributor Bushing; Periodic Parts Replacement of Left Magneto | 07/24/1972 | |
| SIL L-72 | en | Lycoming Service Instruction No. 1255 (dated), 4 August 1972 - Thermostatic Oil Cooler Bypass Valve Replacement | 11/01/1972 | |
| SIL L-73 | en | Inflated Float Installation - Battery Acid Spillage | 01/02/1973 | |
| SIL L-74 | en | Fuel Shut-Off Control Cable - Rerouting to Reduce Operating Friction | 01/02/1973 | |
| SIL L-75 | en | Increase Ring Gear to Carrier Torque | 02/19/1973 | |
| SIL L-76 | en | Corporate Name Change | 03/01/1973 | |
| SIL L-77 | en | Avco Lycoming Service Bulletin No. 365 (dated), 1 June 1973 - Bendix Magneto Conversion to Incorporate Flexible Drive | 07/31/1973 | |
| SIL L-78 | en | New Main Transmission Input Pinion Forward Roller Bearing PN 269A5051-20 | 10/22/1973 | |
| SIL L-79 | en | Vendor Warranty and Repair - Police Patrol Equipment | 12/24/1973 | |
| SIL L-80 | en | High Tip Speed Tail Rotor P/N 269A6004 -- Spare Assembly and Component Availability | 04/01/1974 | |
| SIL L-81 | en | Discussion of Hughes Serial Numbering Method | 05/31/1974 | |
| SIL L-82 | en | Inflatable Floats - Service, Maintenance and Repair Facilities | 08/05/1974 | |
| SIL L-83 | en | Replacement - Tail Rotor Control Pedal Retaining Pins | 11/11/1974 | |
| SIL L-84 | en | Replacement - 24V clutch Actuator Noise Filter Capacitors | 11/18/1974 | |
| SIL L-85 | en | Bendix Fuel Injection System Flow Divider Installation on HIO-360 Series Engine - Inspection/Modification | 05/05/1975 | |
| SIL L-86 | 2 | en | Main Transmission - Ring, Pinion Gear Compatibility | 11/05/1979 |
| SIL L-87 | en | New Conical Type Teeter Bearings for LTS Tail Rotor Assembly | 08/11/1975 | |
| SIL L-88 | en | Proper Correlation of Throttle and Collective Pitch Controls | 11/10/1975 | |
| SIL L-89 | en | New Fiberglass Canopy Slat Installation PN 269A2216 | 12/11/1975 | |
| SIL L-90 | en | New Tail Rotor Blades with Cadmium Plated Spar Assembly for Improved Corrosion Protection | 07/26/1976 | |
| SIL L-91 | en | Alternate Lamp for Engine Instrument 3-Pack Units PN 269A4112 Series | 07/26/1976 | |
| SIL L-92 | en | New PN 269B1145-25 Main Rotor Blade with Trim Tab | 10/11/1976 | |
| SIL L-93 | en | New Aluminum Isolator Brackets for Mounting Engine Cooling Scroll Reduce Stress Levels in Engine Hanger Assemblies | 08/08/1977 | |
| SIL L-94 | en | Fiberglass Canopy Slat Installation, P/N 269A2216 - Attachment of Night Flying Position Lights | 07/22/1977 | |
| SIL L-95 | en | New P/N 269A1185-1 and P/N 269A1190-1 Main Rotor Blade Assemblies with Leading Edge Abrasion Strip | 12/15/1977 | |
| SIL L-96 | en | Paint Schedules and Ordering Procedures | 04/10/1978 | |
| SIL L-97 | en | Inspection and Serviceability - Main Rotor Thrust Bearing PN 269A5050-63 and -73 | 05/22/1978 | |
| SIL L-98 | 1 | en | Approved Grease for Drive System Rotating Bearings | 11/02/1981 |
| SIL L-99 | en | Installation of Engine Exhaust Flange Gaskets | 07/15/1978 | |
| SIL L-101 | en | Limited Life Increase for PN 269A5050-63 and -73 Main Rotor Thrust Bearings; Unlimited Service Life for PN 69A5408 Series Tail Rotor Transmission (LTS) Output Shaft | 08/01/1979 | |
| SIL L-102 | en | New PN 269A8251 Heat Insulation Kit for Model 269C Engine Exhaust System | 09/28/1979 | |
| SIL L-103 | en | Main Transmission Input Pinion Shaft PN 269A5103 and -9 - Limited Life Increased to 6000 Hours | 08/27/1979 | |
| SIL L-104 | en | Installation of Engine Exhaust Collector Required for 2050 LB Gross Weight Helicopter Operation | 09/28/1979 | |
| SIL L-105 | en | Belt Drive Transmission PN 269A5559-3 Coupling Shaft - Limited Life Increase to 6000 Hours | 11/19/1979 | |
| SIL L-106 | 1 | en | Drive System Rotating Bearings - Daily Purge with Mobil 28 Grease | 02/01/1982 |
| SIL L-107 | en | New Comfort Clips for Sam Browne Seat Belt and Shoulder Harness Assemblies | 12/10/1979 | |
| SIL L-108 | en | New Wedge Base Lamp Socket PN 2973932 for Both Instrument Cluster Assemblies | 01/01/1980 | |
| SIL L-109 | en | Bushing Requirements for PN 269A2324-7 Tailboom Center Support (Saddle) Fitting Installation | 03/24/1980 | |
| SIL L-110 | 1 | en | 24V Battery Relay, P/N MS24166D1 - Corrosion Protection and Relay Replacement | 11/19/1982 |
| SIL L-112 | en | Periodic cleaning and Lubrication of Sealed Bearing - Upper Pulley, Lower Coupling drive Pulley, Idler Pulley and Main Rotor Driveshaft Thruster Bearing | 06/09/1980 | |
| SIL L-113 | 6 | en | Exchange Program - Selective Helicopter Components | 02/12/1985 |
| SIL L-114 | 2 | en | New Drive Belt H-Frame with PN 269A5050-78 Upper Pulley Bearing Having Service Life of 3000 Hours | 02/15/1982 |
| SIL L-115 | en | Compliance with FAA Airworthiness Directives and Hughes Mandatory (Red Border) Service Information Notices | 09/30/1980 | |
| SIL L-117 | 1 | en | Periodic Inspection and Replacement - Main Rotor Hub Attaching bolts PN 269A1229 and 269A1232 | 07/21/1981 |
| SIL L-119 | 1 | en | Aeroshell 14 Grease Only Approved Lubricant for Rotor System Oscillating Bearings | 11/02/1981 |
| SIL L-120 | en | Ground Handling Precautions for Main Rotor Systems Equipped with Elastomeric Dampers | 07/31/1981 | |
| SIL L-121 | en | Corrosion Control Manual now Available for General Distribution and Purchase | 08/21/1981 | |
| SIL L-123 | en | New Protective Boot for 269A6034 Series LTS Tail Rotor Assembly | 09/01/1981 | |
| SIL L-124 | en | Torque Value Established for PN 269A5714 Tail Rotor Driveshaft Forward Retaining Nut | 09/01/1981 | |
| SIL L-125 | en | New PN 269A5498-5 Lower Coupling Pulley Driveshaft provides as Replacement for PN 269A5498-3 Driveshafts | 10/01/1981 | |
| SIL L-126 | 1 | en | Summary of FAA Supplemental Type Certificates for Hughes Model 269 Series Helicopters | 09/01/1982 |
| SIL L-127 | 1 | en | Unlimited Service Life P/N 269A5430 and 269A5430-1 Driving Spline Fitting and 269A6030 Driven Spline and Inspection Criteria | 04/09/1982 |
| SIL L-129 | en | PN 269A5050-74 Idler Pulley Bearing and PN 269A5050-78 Belt Drive H-Frame Upper Bearing - Service Life Increased to 3000 Hours | 02/15/1982 | |
| SIL L-130 | en | New PN 269A3150-9 Aft Landing Gear Damper Assemblies Increase Static Height of Tail Skid for 269C Helicopters Operating in Cold Weather or with Increased Gross Weight | 03/26/1982 | |
| SIL L-131 | 1 | en | Distribution and Shipment of Schweizer-Hughes Model 300 Publications | 02/01/1984 |
| SIL L-132 | en | New Tailboom Assembly, P/N 269A2320-9 | 11/24/1982 | |
| SIL L-133 | en | Unauthorized Tail Boom Assemblies for 269 Series Helicopters | 02/27/1984 | |
| SIL L-137 | en | Replacement of Aircraft Identification Plates | 02/11/1986 | |
| SIL L-138 | en | Service Life Cutoff Limit | 02/11/1986 | |
| SIL L-139 | en | Cleaning of Elastomeric Dampers | 01/02/1987 | |
| SIL L-140 | en | Proper Operation of Trim Controls | 01/02/1987 | |
| SIL L-141 | en | Explanation of Temporary Revision System | 01/02/1987 | |
| SIL L-142 | en | Life Limit Update | 01/02/1987 | |
| SIL L-143 | en | Overhaul Schedule Update | 01/02/1987 | |
| SIL L-144 | en | Breakaway Torque Increase - MR Bearing Assembly | 09/29/1987 | |
| SIL L-145 | en | Company Policy - Unapproved Parts | 03/10/1988 | |
| SIL L-146 | en | Avco Lycoming Service Bulletins | 09/01/1987 | |
| SIL L-147 | en | Publication Index - Major Change in Scope and Revision Procedure | 12/15/1987 | |
| SIL L-148 | en | Avco Lycoming Service Instructions No. 1014K and 1409A | 02/01/1989 | |
| SIL L-150 | 2 | en | New Belt Drive Transmission "H" Frame | 07/27/1996 |
| SIL L-151 | en | Errors in 269 Notice and Letter Set | 05/30/1991 | |
| SIL L-152 | en | New Part Numbers for Tail Rotor Transmission Assembly | 11/07/1991 |
| Name | Revision | Lang | Subject | Date |
|---|---|---|---|---|
| SIN N-1 | 4 | en | Mandatory Field Modification - Idler Pulley Assembly, P/N 269A5514 | 09/15/1971 |
| SIN N-3 | en | Retrofit - Clutch Engagement Spring Assembly Guide | 05/04/1966 | |
| SIN N-4 | en | Modification - Fuel Injection System Bendix RSA5AB1 | 05/04/1966 | |
| SIN N-5 | en | Inspection - Belt Drive Transmission Strut P/N 5422 | 05/18/1966 | |
| SIN N-6 | en | Float Kit - Removable Skid Extension | 07/16/1966 | |
| SIN N-7 | en | Modification - Engine Fuel Pump Drain Line | 07/18/1966 | |
| SIN N-8 | en | Inspection - Belt Drive Idler Pulley Arm P/N 5506 | 07/15/1966 | |
| SIN N-9 | 2 | en | Mandatory Inspection - Possible Retirement Main Rotor Blade | 10/03/1977 |
| SIN N-11 | 1 | en | Field Replacement - Auxiliary Fuel Boost Pump | 11/29/1968 |
| SIN N-12 | en | Mandatory Field Modification - Belt Drive Idler Pulley Clutch Shaft P/N 5456 | 09/01/1966 | |
| SIN N-13 | en | Field Modification - Engine Cooling Scroll | 09/29/1966 | |
| SIN N-14 | en | Modification - Throttle Bellcrank and Control Cover Clearance | 06/27/1967 | |
| SIN N-15 | en | Field Installation - Chip Detector Engine and Transmission | 11/04/1966 | |
| SIN N-16 | 1 | en | Field Modification - Tail Rotor Assembly | 09/27/1967 |
| SIN N-17 | en | Field Modification - Fuel Injector System Rosette Fitting | 11/17/1966 | |
| SIN N-18 | en | Tape Application Area - Tail Rotor Blades | 12/01/1966 | |
| SIN N-19 | en | Field Modification - Induction System Air Filter Housing P/N 8143 | 12/02/1966 | |
| SIN N-20 | en | Field Installation - Spring Longitudinal Bungee | 02/20/1967 | |
| SIN N-21 | en | Bellcrank Installation Servo Fuel Injector Throttle Control | 08/23/1967 | |
| SIN N-22 | en | Reverse Installation - Collective Bungee Assembly | 02/22/1967 | |
| SIN N-23 | en | Field Replacement - Main Rotor Driveshaft | 02/20/1967 | |
| SIN N-24 | en | Main Rotor Blades, P/N 269B1145 Single Configuration Paint | 09/19/1967 | |
| SIN N-25 | en | Bracket Installation - Scroll Assembly | 11/01/1967 | |
| SIN N-26 | en | Kit Installation - Low Speed Tail Rotor System | 08/22/1967 | |
| SIN N-27 | en | Kit Installation - Exhaust Heater Support | 02/22/1967 | |
| SIN N-28 | en | Removal AN960-416L Washer, Engine Cooling Shroud Side Panel Assembly | 04/01/1967 | |
| SIN N-29 | en | Inspection and Field Modification - Main Rotor Gear Drive Assembly P/N 269A5175 | 03/29/1967 | |
| SIN N-30 | en | Exhaust Manifold Assembly Modification to Accommodate New Exhaust Adapter Flange | 11/08/1967 | |
| SIN N-31 | 1 | en | Field Installation and Modification - Dual Bolt, Tail Skid Mounting Hardware | 05/23/1973 |
| SIN N-32 | en | Rerouting - Alternator Wire Ties | 04/01/1967 | |
| SIN N-33 | en | Kit Installation - Cabin Sealing Re: Carbon Monoxide Ingestion | 05/12/1967 | |
| SIN N-34 | en | Locknut Installation - Center Collective Pitch Stick Assembly P/N 269A9962 - Dual Control | 08/07/1967 | |
| SIN N-35 | en | Inspection - P/N 269A5513 Bumper Plug, Lower Coupling Driveshaft | 07/26/1967 | |
| SIN N-36 | en | Inspection - Tail Rotor Driveshaft, Excessive End Play | 07/26/1967 | |
| SIN N-37 | 2 | en | Mandatory Retirement - Bellcrank Assembly, Lateral Pitch Mixer Idler P/N 269A7506 | 03/10/1969 |
| SIN N-38 | en | Inspection - Cable, Belt Drive Clutch Control | 02/27/1968 | |
| SIN N-39 | 2 | en | Installation - Stiffener Canopy Slat | 08/14/1968 |
| SIN N-40 | en | Tail Rotor Repair - Erosion, Blade Leading Edge | 03/15/1968 | |
| SIN N-41 | en | AC Engine Mounted Full - Flow Oil Filter - Installation | 03/15/1968 | |
| SIN N-42 | en | Installation - Jumper Wires | 03/15/1968 | |
| SIN N-43 | en | Retrofit - Dual Clutch Spring Attachment Fitting P/N 269A5436-5 and 269A5436-7 | 03/28/1968 | |
| SIN N-43, Add X1 | en | Retrofit - Dual Clutch Spring Attachment Fitting P/N 269A5436-5 and 269A5436-7 | 04/23/1968 | |
| SIN N-44 | en | Kit Installation - Utility Lights | 03/29/1968 | |
| SIN N-45 | en | Rework Electrical Components - Radio Noise Level Control | 03/29/1968 | |
| SIN N-47 | en | Mandatory Inspection - Main Rotor Blade Flapping Hinge Bearings | 04/18/1968 | |
| SIN N-48 | en | Retrofit - Alternate Battery Location | 05/02/1968 | |
| SIN N-49 | en | Shim Installation - Bearing, Upper Pulley Assembly | 05/08/1968 | |
| SIN N-50 | en | Retrofit - Throttle, Governor Control System | 05/08/1968 | |
| SIN N-51 | en | Kit Installation - Alternator Mounting Assembly - M10024 | 06/05/1968 | |
| SIN N-52 | 1 | en | Rework - Tail Rotor Pedal Arm P/N 269A7336-5 | 11/12/1968 |
| SIN N-53 | en | Inspection - Tail Boom Center Attachment Fitting P/N 269A2324 | 06/24/1968 | |
| SIN N-54 | en | Dashpot Installation - Throttle Control Modification Kit M10040 | 07/26/1968 | |
| SIN N-55 | 1 | en | Inspection - Engine Lower Coupling Drive Shaft (P/N 269A5504-3) or Engine Lower Coupling Drive Shaft Assembly (P/N 269A5504-5 or 80-269A5504-5) | 12/09/1968 |
| SIN N-56 | 4 | en | Mandatory Inspection - Main Rotor Mast | 05/06/1981 |
| SIN N-57 | en | Support Clamp Installation - P/N 269A4869 Exhaust Heater Kit | 09/11/1968 | |
| SIN N-58 | en | Inspection - Tail Rotor Blade Assembly P/N 269A6124 | 09/12/1968 | |
| SIN N-60 | 1 | en | Balance Weight Assembly Installed - Low Tip Speed Tail Rotor | 02/20/1969 |
| SIN N-61 | en | Inspection - Tail Rotor Fork Bolts P/N 269A6235 | 10/30/1968 | |
| SIN N-62 | 1 | en | Kit - Floor Beam Reinforcement | 08/04/1971 |
| SIN N-63 | en | Inspection - Tail Rotor Driveshaft Damper Bearing Block P/N 269A5722 and 269A5722-3 | 11/08/1968 | |
| SIN N-64 | 1 | en | Upper Pulley Sleeve, Locknut and Spacer - Belt Drive Transmission Assembly | 06/20/1972 |
| SIN N-65 | en | Kit Modification - Air Intake Assembly Re: Amphibious Float Landing Installation | 11/15/1968 | |
| SIN N-66 | en | Blade Weight Installation - P/N 269B1145 Series Main Rotor Blades | 12/10/1968 | |
| SIN N-67 | en | Inspection Main Rotor Swashplate Scissor Link Assemblies P/N 269A1335 and 269A1336 | 02/21/1969 | |
| SIN N-68 | en | Control Cover - Bonding, Upper and Lower | 03/10/1969 | |
| SIN N-69 | en | Inspection, Corrosion Damage - Main Rotor Driveshaft P/N 269A5305-3 | 10/08/1969 | |
| SIN N-70 | en | Installation - Improved Fuel Injector Assembly | 10/08/1969 | |
| SIN N-71 | 1 | en | Inspection - Tail Rotor Transmission Assembly, P/N 269A6027 or 369A5400 | 10/06/1969 |
| SIN N-71, Add X1 | 1 | en | Inspection - Tail Rotor Transmission Assembly, P/N 269A6027 or 369A5400 | 10/27/1969 |
| SIN N-72 | en | Periodic and Conditional Inspection - Main Rotor Mast Assembly P/N 269A2020 | 10/17/1969 | |
| SIN N-73 | 1 | en | Inspection - Idler Pulley Assembly, Axial Play | 03/24/1970 |
| SIN N-74 | 1 | en | Inspection - Main Rotor Mast Internal Corrosion | 02/16/1972 |
| SIN N-75 | 2 | en | Mandatory Inspection - Main Rotor Lead-lag and Flapping Hinge Bolts P/N HS1446-10-68 | 04/14/1970 |
| SIN N-77 | 1 | en | Installation - Belt Drive Clutch Cable Guard Kit M10041 | 02/14/1972 |
| SIN N-78 | en | Inspection - P/N HS1446-10-68 Bolt, Lead Lag and Flapping Hinge | 07/31/1970 | |
| SIN N-79 | en | Relocation - Oil Pressure Sender P/N 5654912 and Fuel Pressure sender P/N 5654913 | 09/04/1970 | |
| SIN N-80 | 2 | en | Static Source Relocation - Modification Kit No. M10059-5 | 05/01/1972 |
| SIN N-81 | en | Modification - King KY-90A or KY-95 Transceiver Installation | 11/09/1970 | |
| SIN N-83 | en | Installation - Exhaust Heater Modification Kit No. M10065-1 | 01/27/1971 | |
| SIN N-84 | en | Retrofit Kit - Alternate Battery Location | 02/25/1971 | |
| SIN N-86 | en | Desensitized Throttle Modification Kit No. M10061 | 02/26/1971 | |
| SIN N-88 | 1 | en | 100 Hour Inspection - Engine Exhaust System | 11/10/1971 |
| SIN N-89 | en | Installation - Mounting Brackets Dual Head Alternator | 04/16/1971 | |
| SIN N-90 | 1 | en | Mandatory Replacement - Idler Pulley Bearings, P/N 269A5050-52 | 09/07/1971 |
| SIN N-91 | en | Main Rotor Transmission Modification Kit No. M10062 | 06/09/1971 | |
| SIN N-92 | en | Relocation - Warning Indicator Light, Searchlight Control Handle | 07/06/1971 | |
| SIN N-93 | en | Inspection - Main Rotor Hub and Shaft Assemblies P/N 269A5305 and 269A5305-9 | 07/19/1971 | |
| SIN N-94 | en | Runout (TIR) Inspection - Main Rotor Thrust Bearing P/N 269A5050-73 | 07/26/1971 | |
| SIN N-95 | en | Mandatory 200-Hour Periodic Replacement - Idler Pulley Bearings | 09/15/1971 | |
| SIN N-96 | en | Modification - Center Back Cushion Assembly P/N 269A4092 | 10/08/1971 | |
| SIN N-97 | en | Modification - Cyclic Pitch Control Installation | 10/08/1971 | |
| SIN N-98 | en | Inspection - Tail Rotor Control Stop P/N 269A7326 | 11/29/1971 | |
| SIN N-99 | en | Inspection - Latch, Belt Drive Clutch Handle, P/N 269A2210 | 12/15/1971 | |
| SIN N-100 | en | Repair of Tail Rotor Blades, P/N 269A6035 Series | 12/21/1971 | |
| SIN N-101 | en | Shim Installation - Tail Rotor Hub at Fork (Teeter) Bearing; Replacement - Tail Rotor Fork Bearing | 03/27/1972 | |
| SIN N-102 | en | Mandatory Inspection - Landing Gear Damper (poppet type) Assembly P/N 269A3150 | 10/23/1972 | |
| SIN N-103 | en | University Sound System Kit Installation P/N 269A4190-1 and 269A4190-3 Modification of MA-500 Amplifier | 11/14/1972 | |
| SIN N-104 | en | Manually Operated Searchlight Installation P/N 269A4333 Series Wire Replacement Alternator Switch to Circuit Breaker | 02/26/1973 | |
| SIN N-106 | en | Rework - Flotation Gear Installation Kit No. 269A4300-15 | 03/17/1973 | |
| SIN N-107 | en | Modification and Inspection - Belt Drive Idler Pulley Clutch Assembly P/N 269A5447 and 269A5447-3 | 04/06/1973 | |
| SIN N-108 | en | Mandatory Serialization Tailboom Support Strut Assembly, PN 269A2015-5 | 05/21/1973 | |
| SIN N-109 | 2 | en | Mandatory Inspection of Tail Boom Support Strut Aluminum End Fittings, Part Number 269A2016-3 and 269A2016-5; Replacement of Aluminum End Fittings with Stainless Steel End Fittings (Modification Kit Number M10070) | 09/01/1976 |
| SIN N-110 | en | Configuration Modification - 2050 Lb. Gross Weight Conversion Kit No. M10078 | 09/24/1973 | |
| SIN N-111 | 3 | en | Conversion of 12V to 24V Electrical System - Modification Kit No. M10068 and Installation of 24V, 100 Ampere Capacity Alternator - Kit No. 269A4929-1 | 01/24/1986 |
| SIN N-112 | 1 | en | Wiring Modification - Auxiliary Fuel Pump P/N 269A8311-1 and 269A8303-5 | 04/26/1976 |
| SIN N-113 | en | Grease Quantity Requirements - Belt Drive Transmission Lower Pulley Bearing P/N 269A5050-507 | 03/03/1974 | |
| SIN N-114 | 3 | en | Mandatory Inspection and Modification - PN 269A5179 Drive Shaft and Coupling Assembly, Main Rotor Gear Drive Assembly | 09/17/1977 |
| SIN N-115 | 1 | en | Rework of Engine Mounting Hangar Assemblies P/N 269A8617 and 269A8618 to Eliminate Possible Engine Crankcase to Hangar Assembly Interference | 10/03/1975 |
| SIN N-117 | 2 | en | Dual RPM and Quiet Operation Configuration P/N 269A4957-3 | 07/11/1977 |
| SIN N-118 | en | Corrosion Prevention/Inspection - Main Rotor Blade, P/N 269A1165 Blade Tip Weight Area and Tip Cap | 05/20/1974 | |
| SIN N-119 | en | Inspection - Replacement Main Rotor Blade Root Fitting Bolts; Main Rotor Blade Damper Bolts | 05/23/1974 | |
| SIN N-121 | 1 | en | Mandatory Inspection and Rework - Tail Rotor Control System, Rudder Pedal Installation | 10/03/1977 |
| SIN N-125 | en | Static System - Line Restrictor and Drain Fitting Modification Kit P/N M10094 and M10093-3 | 01/02/1975 | |
| SIN N-126 | en | Mandatory Inspection/Replacement Clutch Actuator Retaining Screws | 02/24/1975 | |
| SIN N-127 | en | Mandatory Reinforcement and Field Repair Canopy Slat P/N 269A2297 or 296A2297-7 | 03/05/1975 | |
| SIN N-128 | en | Mandatory Replacement of Plug P/N 23425-166 in Pinion Assembly P/N 269A5103 and -9 in Main Rotor Gear Drive Assemblies P/N 269A5175, -3 and -5 with Modification Kit P/N M10104; Securing of P/N 269A5050-1 or -20 Roller Bearing | 03/25/1975 | |
| SIN N-129 | en | Inspection/Replacement Searchlight Mount Bolts | 03/31/1975 | |
| SIN N-130 | en | Mandatory Inspection - Fiberglass Tail Rotor Blades, PN 269A6124, 269A6124-9, 269A6035, 269A6035-9, 269A6035-17, 269A6035-19, 269A6035-M, 269ASK15, and 269-6100 | 08/28/1975 | |
| SIN N-131 | en | Mandatory Inspection and Possible Replacement - Throttle Gear P/N 269A7223; Pilot and Copilot's Collective Pitch Sticks | 08/11/1975 | |
| SIN N-132 | en | Mandatory Inspection - Horizontal Stabilizers Forward Boom Attach Fitting P/N 269A2518-3 | 11/07/1975 | |
| SIN N-133 | en | Installation of Engine Exhaust Seals P/N 269A8255 | 11/07/1975 | |
| SIN N-134 | 3 | en | Mandatory Revised Engine Operating Procedures and Maintenance Practices | 07/03/1989 |
| SIN N-135 | en | Field Modification and Repair - Manually Operated Searchlight Installation P/N 269A4333-27, -29, -39 and 269A4335-1 | 01/23/1976 | |
| SIN N-136 | en | Longitudinal Cyclic Trim Assembly - Installation of Limit Switch | 03/01/1976 | |
| SIN N-137 | 1 | en | Mandatory Wire Modification - Wet/dry AG Kit P/N 269A4153, -3 or -5 | 06/18/1976 |
| SIN N-138 | en | Mandatory Inspection - Lateral Cyclic Trim Control Assembly, PN 269A7316-3, -5, -7, -9 or -11 | 04/30/1976 | |
| SIN N-139 | en | Modification - Left Hand Front Engine Cooling Shroud Panel Assembly P/N 269A8508-15 or -25 and Engine Mounting Bolt Installation | 05/20/1976 | |
| SIN N-140 | en | Field Modification - Fuselage Frame Assembly | 09/01/1976 | |
| SIN N-141 | 1 | en | Mandatory Field Modification and Interim Inspections - Belt Drive Clutch Linear Actuator Assembly | 03/08/1977 |
| SIN N-143 | en | Mandatory Periodic Inspection - P/N 269A5179-3 Driveshaft and Coupling Assembly, Main Rotor Gear Drive Assembly P/N 269A5175, -3 or -5 | 05/31/1977 | |
| SIN N-145 | en | Replacement of P/N 269A8244 or -7 Tailboom Clamp Assembly for Muffler/Resonator Kit P/N 269A8245-3 | 07/11/1977 | |
| SIN N-146 | 2 | en | Mandatory Belt Drive Transmission Assembly - Inspection of Lower Pulley Bearings and Shimming of Lower Pulley Bearing Straps: Periodic Torque Check of Forward Bearing Retaining Nut | 12/07/1979 |
| SIN N-147 | 4 | en | Mandatory Relocation of Starter Vibrator Circuit Wiring | 02/23/1982 |
| SIN N-149 | en | Mandatory Installation of Placard P/N 269A4646-191 Declutched Operation Prohibited Above 1600 RPM | 12/28/1977 | |
| SIN N-150 | en | Mandatory Inspection and Possible Replacement Seat Belt and Shoulder Harness Assembly, P/N 269A4345 (American Safety Flight Systems P/N 500987-401) | 07/15/1978 | |
| SIN N-151 | 2 | en | Mandatory Inspection - Main Transmission Pinion Assembly, PN 269A5103-9 | 11/07/1978 |
| SIN N-153 | en | Mandatory Inspection and Rework of LTS Tail Rotor Hub PN 369A1725, 369A1725-5, and 369A1725-501 | 09/01/1978 | |
| SIN N-153 | 1 | en | Mandatory Inspection and Rework of LTS Tail Rotor Hub PN 369A1725, 369A1725-5, and 369A1725-501 | 10/28/1981 |
| SIN N-154 | en | Field Modification of New Four Bolt Attachment Configuration - Tail Skid Tube, Tailboom Adapter and Transmission Housing | 09/25/1978 | |
| SIN N-155 | 2 | en | Mandatory Replacement of P/N 269A6092 or 369A1602 Tail Rotor Drive Fork Hinge Bolt and P/N 269A6093 or 369A1603 Nut; New Assembly Procedure for Tail Rotor Hub and Drive Fork Unit; Periodic Check of Flapping Hinge Bolt Preload | 01/20/1981 |
| SIN N-156 | en | Field Repair or Removal - Trim Tab Main Rotor Blade P/N 269A1160 Series, 269A1185 Series and 269B1145 Series | 02/15/1979 | |
| SIN N-157 | en | Replacement of Radio Transmit/Intercom Trigger Switch; Rework of Cyclic Pitch Stick Grip Assembly | 05/10/1979 | |
| SIN N-158 | en | P/N 269A4546-5 Clutch Linear Actuator Assembly - Installation of Drain Hole in Actuator Cover | 07/20/1979 | |
| SIN N-159 | 1 | en | Field Installation of P/N 269A5160 Anti-Fretting Liner for P/N 269A5179-3 Driveshaft Coupling Assembly and P/N 269A5194 Ring Gear Carrier Assembly | 12/18/1979 |
| SIN N-162 | en | Mandatory Inspection of Tail Rotor Blade Assembly, PN 269A6035-21 and PN 269A6035-23 | 10/12/1979 | |
| SIN N-164 | en | Mandatory Inspection of PN 269A5573-11 H-Frame Assembly | 12/07/1979 | |
| SIN N-166 | en | Mandatory Replacement of Seat Belt Assemblies having Fabric to Metal Latching Devices | 03/17/1980 | |
| SIN N-168 | en | Mandatory Rework of Pilot's Seat Cushion Assembly P/N 269A4039 | 07/18/1980 | |
| SIN N-169 | 1 | en | Alternator Out Indicating Light | 02/28/1986 |
| SIN N-171 | en | Mandatory Periodic Check of Main Rotor Blade Elastomeric Damper Assemblies P/N 269A1290-1 | 12/30/1980 | |
| SIN N-172 | en | Installation of Transmission Chips Warning Light for P/N 269A6027 Tail Rotor Transmission Assembly | 09/12/1980 | |
| SIN N-173 | en | Mandatory Sealing of Interfaces of Abrasion Strip and Main Rotor Blade Skin | 01/30/1981 | |
| SIN N-174 | en | Mandatory Inspection of P/N 269A5050-73 Thrust Bearing; MRC P/N 9210-UP2-2 S/N 539 thru 647 | 02/23/1981 | |
| SIN N-175 | en | Installation of P/N 269A5593-3 H-Frame with P?N 269A5050-78 Bearings | 04/09/1987 | |
| SIN N-176 | 2 | en | Installation of Main Rotor Blade Elastomeric Damper Assemblies P/N 269A1290-1 | 03/25/1987 |
| SIN N-180 | en | Engine Throttle Governor Kit Installation P/N 269A4995-301 | 01/18/1982 | |
| SIN N-181 | en | Mandatory Inspection, Replacement and New Torque Requirement - P/N 269A5104 Main Transmission Ring Gear, PN 269A5194 Ring Gear Carrier Assembly and Attach Hardware | 04/09/1982 | |
| SIN N-182 | en | Mandatory Periodic Inspection of Idler Pulley Support Bracket Assembly, PN 269A5575 and PN 269A5575-3 | 05/26/1982 | |
| SIN N-183 | 3 | en | Mandatory - Pilot Preflight Check of Tail Rotor Blade Leading Edge Abrasion Strip - Detailed Inspection of Tail Rotor Blade Leading Edge Abrasion Strip Bonding - Installation of Rivets on Tail Rotor Blade Leading Edge Abrasion Strip | 09/15/1989 |
| SIN N-185 | en | Mandatory Operational Check - Fuel Low Warning System | 10/12/1982 | |
| SIN N-187 | en | Mandatory Inspection and Overhaul of Fuel Shutoff Valve P/N 269A4598 | 07/29/1983 | |
| SIN N-199 | 1 | en | Mandatory One-Time Inspection of Main Rotor Driveshaft P/N 269A5304-5 | 07/15/1987 |
| SIN N-207 | en | Installation and Replacement of Protective Sleeve (Speedi-Sleeve PN 084956) on Tail Rotor Transmission Output Gearshaft | 11/10/1986 | |
| SIN N-210 | 1 | en | Mandatory Identification of Throttle Cable Assemblies; Inspection of 269A4683 (BSC) or -3 Throttle Cable Assemblies Having Threaded End Fittings; Replacement of 269A4683 (BSC) and -3 Throttle Cable Assemblies Having Threaded and/or Aluminum End Fittings | 05/30/1991 |
| SIN N-217 | en | Mandatory Identification of Center Frame Aft Cluster Fittings; Installation of 269A4646-19 Support Strut Placards | 01/29/1988 | |
| SIN N-219 | en | Mandatory Detail Inspections of Upper Pulley Stack-Up | 08/24/1990 | |
| SIN N-220 | en | Mandatory One-Time Inspection of 269A2234-3 and 269A2235-3 Aft Cluster Fittings | 01/29/1988 | |
| SIN N-221 | en | Mandatory Return of Aft Cluster Fittings in Spares Inventory; Dye Penetrant Inspection of Aft Cluster Fittings; Removal of Sample Piece from Aft Cluster Fittings; Daily Visual Inspection of Aft Cluster Fittings | 01/29/1988 |
| Name | Revision | Lang | Subject | Date |
|---|---|---|---|---|
| SL 001 | en | Annual Disassembly of Aircraft | 06/01/1987 | |
| SL 102-1 | en | Water in Pitot System | 09/29/1967 | |
| SL 102-2 | en | Possibility of Tow-Line-Ring Fouling | 10/06/1967 | |
| SL 102-3 | en | Fire Potential of Fabric Covered Aircraft | 01/15/1968 | |
| SL 102-4 | en | Conversion of Model SGS 2-33 to Model SGS 2-33A | 03/20/1968 | |
| SL 102-5 | en | Retro-Fit Instructions for Installation of 34189D Dive Brake Control Handle | 04/23/1970 | |
| SL 102-6 | en | Retrofit Instructions for Installation of 34186H-1 Elevator Trim Control | 06/04/1970 | |
| SL 102-7 | en | Vertical Surface Flutter | 05/24/1971 | |
| SL 102-7 | en | Vertical Surface Flutter | 05/24/1971 | |
| SL 102-8 | en | Installation Instructions for 1/64th Oversize Main Wing Pins | 01/20/1972 | |
| SL 102-9 | en | Instrument Panel Installation, Lower V-22 Fasteners | 11/22/1974 | |
| SL 102-10 | en | Flutter of Flaps at Approx. 60-70 mph | 07/09/1975 | |
| SL 102-11 | en | Service Letter No. SL-102-11 | 12/09/1976 | |
| SL 102-12 | en | SGS 2-33 Wing Strut Attach Options | 01/20/1978 | |
| SL 102-13 | en | Securing of Ailerons During Tie-Down | 02/11/1978 | |
| SL 102-14 | en | Seat-Back Adjustment vs. C.G. Aft Limit | 08/21/1978 | |
| SL 102-15 | en | Spring Assembly, Ratchet Lock Trim | 10/27/1981 | |
| SL 102-16 | en | Fuselage Fabric Cover Separation | 08/26/1983 | |
| SL 102-17 | en | Bellcrank, Aileron - Wing | 07/13/1983 | |
| SL 102-18 | en | Cracking of Tow-Release Slot | 07/14/1983 | |
| SL DL-001 | en | Modification of Aircraft Parts Corporation Starter/Generator | 09/23/1998 | |
| SL DL-002 | en | New Splined Main Rotor Hub and Drive Shaft Design with Increased Time Life | 07/06/1999 | |
| SL DL-003 | en | New Design Main Rotor Drive Shaft Thrust Bearing | 07/06/1999 | |
| SL DL-004 | en | Compliance with Airworthiness Directive 99-17-10 | 09/02/1999 | |
| SL DL-005 | en | Interface and Programming on the GPS150/150XL to Display Shadin Fuel Flow Data on the GPS | 05/02/2000 | |
| SL DL-006 | en | Modification Kit for 269D/330 Start/Generator Electrical System | 08/11/2000 | |
| SL DL-007 | en | Orientation of Main Rotor Transmission Backlash Shim | 11/10/2000 | |
| SL DL-008 | en | Introduction of New 269A5175-39 Main Rotor Transmission Assembly | 12/01/2000 | |
| SL DL-009 | en | New Design - Tail Rotor Drive Shaft | 01/25/2002 | |
| SL DL-010 | en | Exchange Program for CEF Industries 8618M33 N2 Trim Actuator | 03/01/2006 | |
| SL DL-011 | en | Introduction of New Main Rotor Transmission Assembly and Belt Drive Transmission Assembly Containing an Extended Hub Upper Pulley Assembly | 07/21/2006 | |
| SL DL-012 | en | Structural Enhancement of Tail Rotor Pedal Mount | 12/08/2008 | |
| SL DL-013 | en | Engine/Transmission Oil Cooler Impellers | 06/11/2009 | |
| SL DL-014 | en | C20W Fuel Pump Bypass Check | 11/13/2009 | |
| SL DL-015 | en | Technical Publications - Policy & Price Changes, 2010 | 03/11/2010 | |
| SL DL-016 | en | 2010 Publications Schedule | 03/11/2010 | |
| SL DL-017 | en | Limited Time Upgrade Offer | 07/16/2010 | |
| SL L-9 | en | Replacement - Fuel Flow Tubing Assembly | 10/13/1966 | |
| SL L-25 | en | Parts Replacement - Main Rotor Shaft P/N 5305-3, Hub P/N 5305-5, and Lifting Eye P/N 5305-7 | 09/05/1967 | |
| SL L-63 | en | Lycoming Service Bulletin Nos. 340 and 341, Dated August 27, 1971 | 11/01/1971 | |
| SL L-71 | en | Lycoming Service Bulletin No. 355, Dated 4 August 1972; Alternator Fan Replacement (Prestolite Bulletin No. ASM-8) | 09/12/1972 | |
| SL L-149 | en | Changes to Notice and Letter Nomenclature | 08/24/1990 | |
| SL L-153 | en | Extended Warranty Policy for Pinion and Ring Gears Installed in Main Rotor Transmissions Affected by Service Bulletin B-244 | 11/07/1991 | |
| SL L-154 | en | Service Facilities, for Corrosion Damage Inspection and Repair of the Main Rotor Driveshaft Part Number 269A5305. Reference Service Bulletin B-243 | 05/08/1992 | |
| SL L-155 | en | Main Rotor Rod End Bearings and Lead-Lag Bushings | 04/29/1993 | |
| SL L-156 | en | New Improved Landing Gear Dampers | 04/29/1993 | |
| SL L-157 | en | Overhaul Kits for Fuel Shut-Off and Drain Valves | 04/29/1993 | |
| SL L-158 | en | Improper Maintenance Procedures in Installation of the 269A2324 Series Tail Boom Support Fitting (Saddle Fitting) which Results in a Hazardous Flight Condition | 04/29/1993 | |
| SL L-159 | en | Additional Lubricants for Lower Coupling Driveshaft | 04/30/1995 | |
| SL L-160 | en | Strut and Bracket Assembly - Belt Drive Installation | 10/14/1996 | |
| SL L-161 | en | New Improved Clutch Spring Retainer | 04/07/1997 | |
| SL L-161 | en | New Improved Clutch Spring Retainer | 04/07/1997 | |
| SL L-161 | en | New Improved Clutch Spring Retainer | 04/07/1997 | |
| SL L-162 | en | Compliance of Service Notice N-59, AD 68-21-05 and AD 97-05-06 Against 269A5050-50, -53, and -73 Main Rotor Drive Shaft Thrust Bearing | 04/15/1997 | |
| SL L-163 | en | Exchange Program for Elastomeric Tail Rotor Fork | 09/27/1999 | |
| SL L-164 | en | New Electric Driven Airframe Fuel Pump | 09/27/1999 | |
| SL L-165 | en | Compliance with Airworthiness Directive 99-17-10 | 09/02/1999 | |
| SL L-165 | en | Compliance with Airworthiness Directive 99-17-10 | 09/02/1999 | |
| SL L-166 | en | New Retirement Time Life for 269A5103-51 Input Pinion and 269A5194 Carrier Assembly Installation in Model 269C-1 Helicopters | 12/13/1999 | |
| SL L-166 | en | New Retirement Time Life for 269A5103-51 Input Pinion and 269A5194 Carrier Assembly Installation in Model 269C-1 Helicopters | 12/13/1999 | |
| SL L-167 | en | 300CB Engine Time Between Overhaul Extension | 06/06/2000 | |
| SL L-168 | en | New SA-269K-101 Fuel System Vent Kits | 08/10/2000 | |
| SL L-169 | en | New SA-269K-101 Fuel System Vent Kits | 09/01/2000 | |
| SL L-169 | en | New SA-269K-101 Fuel System Vent Kits | 09/01/2000 | |
| SL L-170 | en | Introduction of New 269A5175-35 and -37 Main Rotor Transmission Assemblies | 12/01/2000 | |
| SL L-170 | en | Introduction of New 269A5175-35 and -37 Main Rotor Transmission Assemblies | 12/01/2000 | |
| SL L-171 | en | Orientation of Main Rotor Transmission Backlash Shim | 12/01/2000 | |
| SL L-171 | en | Orientation of Main Rotor Transmission Backlash Shim | 12/01/2000 | |
| SL L-172 | 1 | en | New Design - Tail Rotor Drive Shaft | 01/25/2002 |
| SL L-172 | 1 | en | New Design - Tail Rotor Drive Shaft | 01/25/2002 |
| SL L-172 | 1 | en | New Design - Tail Rotor Drive Shaft | 01/25/2002 |
| SL L-173 | en | Special Inspection of Main Rotor Transmission Magnetic Plug | 08/22/2001 | |
| SL L-173 | en | Special Inspection of Main Rotor Transmission Magnetic Plug | 08/22/2001 | |
| SL L-173 | en | Special Inspection of Main Rotor Transmission Magnetic Plug | 08/22/2001 | |
| SL L-174 | en | Introduction of New Lower Pulley Bearing Removal Tool | 09/11/2001 | |
| SL L-174 | en | Introduction of New Lower Pulley Bearing Removal Tool | 09/11/2001 | |
| SL L-175 | en | Optional Anti-Collision Light Conduit in New 269A2320-17 Tailboom Assemblies | 09/11/2001 | |
| SL L-177 | en | Aft Cluster Fitting Modification Kit (P/N SA-269K-0106-1) | 09/13/2002 | |
| SL L-178 | en | Upgrade of 269A4564-5 Linear Actuator | 09/13/2005 | |
| SL L-179 | en | Verification of Mandatory Cluster Fitting Replacement | 09/13/2005 | |
| SL L-180 | en | Function of Tail Rotor Driveshaft Damper Block | 09/26/2008 | |
| SL L-180 | en | Function of Tail Rotor Driveshaft Damper Block | 09/26/2008 | |
| SL L-181 | en | Retirement of Certain Engine and Rotor Tachometer | 01/09/2009 | |
| SL L-181 | en | Retirement of Certain Engine and Rotor Tachometer | 01/09/2009 | |
| SL L-182 | en | ELT Direct Replacement Authorization | 06/17/2009 | |
| SL L-182 | en | ELT Direct Replacement Authorization | 06/17/2009 | |
| SL L-183 | en | Technical Publications - Policy & Price Changes, 2010 | 03/11/2010 | |
| SL L-183 | en | Technical Publications - Policy & Price Changes, 2010 | 03/11/2010 | |
| SL L-184 | en | 2010 Publications Schedule | 03/11/2010 | |
| SL L-184 | en | 2010 Publications Schedule | 03/11/2010 |
| Name | Revision | Lang | Subject | Date |
|---|---|---|---|---|
| SN N-2 | 1 | en | Mandatory Modification - Fuel Injection Lines, Cylinders No. 1 and 3 | 08/02/1966 |
| SN N-10 | 2 | en | Mandatory 25 Hour Inspection - Main Rotor Blade | 08/07/1972 |
| SN N-33 | 2 | en | Mandatory Kit Installation - Cabin Sealing - RE: Carbon Monoxide Ingestion | 12/13/1967 |
| SN N-55 | 1 | en | Mandatory Engine Lower Coupling Driveshaft P/N 269A5504-3 or Engine Lower Coupling Driveshaft P/N 269A5504-5 or 269A5504-1 | 12/09/1968 |
| SN N-59 | en | Mandatory Inspection and Retirement Main Rotor Thrust Bearing Part Number 269A5050-50 and -51. Inspection Field Modification - Main Rotor Mast Thrust Bearing Nut and Spacer Tube | 10/09/1968 | |
| SN N-71 | 1 | en | Mandatory Inspection - Tail Rotor Transmission Assembly P/N 269A6027 or 369A5400 | 10/06/1969 |
| SN N-76 | 2 | en | Mandatory Kit Installation - Main Rotor Thrust Bearing M10044 | 03/22/1971 |
| SN N-82 | 3 | en | Mandatory Inspection - Tailboom Center Attach Fitting (PN 269A2324), and Center Frame Aft Cluster Fitting (PN 269A2234 and 269A2235) | 09/19/1977 |
| SN N-85 | 3 | en | Mandatory Installation - Adapter Mounted Idler Pulley Clutch Assembly Kit No. 269A5447 | 06/18/1976 |
| SN N-87 | 2 | en | Mandatory Installation - Pitch Control Links, Low Tip Speed Tail Rotor Assembly (Kit No. M10067) | 03/25/1975 |
| SN N-90 | 1 | en | Mandatory Replacement - Idler Pulley Bearings, P/N 269A5050-62 | 09/07/1971 |
| SN N-95 | en | Mandatory 200-Hour Periodic Replacement - Idler Pulley Bearings | 09/15/1971 | |
| SN N-108 | en | Mandatory Serialization - Tailboom Support Assembly P/N 269A2015-5 | 05/21/1973 | |
| SN N-120 | en | Mandatory Wiring Modification - Integrated Dual Communication Console (ATI) | 07/29/1974 | |
| SN N-122 | en | Mandatory Inspection - Impeller Bolt Installation | 12/04/1974 | |
| SN N-123 | en | Mandatory Inspection and Rework of Main Transmission Strut Assembly P/N 269A5015 | 12/04/1974 | |
| SN N-124 | 1 | en | Mandatory Inspection - Main Rotor Mast; Left and Right Mast Support Tubes; and Replacement of all Attaching Hardware | 10/03/1975 |
| SN N-126 | en | Mandatory Inspection/Replacement Clutch Actuator Retaining Screws | 02/24/1975 | |
| SN N-130 | en | Mandatory Inspection - Fiberglass Tail Rotor Blades P/N 269A6124, -9, 269A6035, -9, -17, -19, -M, 269ASK15 and 269-6100 | 08/28/1975 | |
| SN N-138 | en | Mandatory Inspection - Lateral Cyclic Trim Control Assembly P/N 269A7316-3, -5, -7, -9 or -11 | 04/30/1976 | |
| SN N-142 | 1 | en | Mandatory Initial Installation of Part Number 269125194 Main Rotor Drive Ring Gear Carrier Assembly; Modification of Part Number 269A5182 Main Gear Drive Upper Housing Assembly | 05/31/1977 |
| SN N-144 | en | Mandatory Inspection - Throttle Control Cable Assembly | 08/08/1977 | |
| SN N-146 | 2 | en | Mandatory Belt Drive Transmission Assembly Inspection of Lower Pulley Bearings and Shimming of Lower Pulley Bearing Straps; Periodic Torque Checks of Forward Bearing Retaining Nut | 12/07/1979 |
| SN N-148 | en | Mandatory Inspection of Sump Cap Attach Hardware - Main and Auxiliary Fuel Tank Assemblies | 09/19/1977 | |
| SN N-160 | 1 | en | Mandatory Rework of Main Rotor Mast Assembly for Improved Corrosion Protection | 08/12/1981 |
| SN N-161 | en | Mandatory 100 Ampere Capacity Alternator Installation - Torque Inspection Of Pivot Bolts P/N AN7-12 and NAS1302-2 | 09/28/1979 | |
| SN N-162 | en | Mandatory Inspection of Tail Rotor Blade Assembly P/N 269A6035-21 and -23 | 10/12/1979 | |
| SN N-163 | en | Mandatory P/N 269A6050 Series and 269A1800-3 - Tail Rotor Pitch Control Assembly - Seating of Bearing Inner Race; Torque Increase for P/N 269A6258 Locknut | 11/26/1979 | |
| SN N-164 | en | Mandatory Inspection of P/N 269A5573-11 H-Frame Assembly | 12/07/1979 | |
| SN N-167 | en | Mandatory Identification and Possible Rework of Seat Belt and Shoulder harness Assemblies | 07/11/1980 | |
| SN N-177 | en | Mandatory Field Inspection and Repair of Tail Rotor Transmission Main Housing Assembly P/N 369A5401 | 04/15/1981 | |
| SN N-178 | 1 | en | Mandatory Instrument Cluster 3-Pack Conversion - AC to Rochester (28 volt) | 04/19/1982 |
| SN N-179 | 1 | en | Mandatory Inspection and Retirement - PN 269A5179 and 269A5179-3 Drive Shaft and Coupling Assembly, Main Rotor Gear Drive Assembly PN 269A5175 Basic, -3 or -5 | 08/17/1982 |
| SN N-182 | en | Mandatory Periodic Inspection of Idler Pulley Support Bracket Assembly, PN 269A5575 and 269A5575-3 | 05/26/1982 | |
| SN N-183 | 3 | en | Mandatory Pilot Preflight Check of Tail Rotor Blade Leading Edge Abrasion Strip. Detailed Inspection of Tail Rotor Blade Leading Edge Abrasion Strip Bonding. Installation of Rivets on Tail Rotor Blade Leading Edge Abrasion Strip | 09/15/1989 |
| SN N-184 | 1 | en | Mandatory Periodic Check and Initial Replacement - Belt Drive Pulley H-Frame Tie Bar Bracket Assembly, PN 269A5517-7 | 11/21/1983 |
| SN N-186 | en | Mandatory Corrosion Inspection - Transmission Oil Pressure Switch P/N 269A4576 | 03/15/1983 | |
| SN N-188 | 4 | en | Mandatory Installation of New Higher Strength Tail Rotor Blade Retention Bolt P/N LWB22-6-22, LWB22D-6-22 or HS4441-6-22; and Inspection of Tail Rotor Blade Attachment Bushing Holes | 02/12/1999 |
| SN N-189 | 1 | en | Mandatory Main Rotor Damper Pitch Bearing Case Attach Hole Inspection and Spacer (PN 269A1207) Installation | 09/02/1986 |
| SN N-190 | en | Mandatory Bungee Installation Kit P/N M10123 - Collective Pitch Stick | 12/15/1983 | |
| SN N-192 | en | Mandatory One-Time Inspection of Main Rotor Hubs and Shafts; P/N 269A5305 and -9 | 05/07/1984 | |
| SN N-193 | en | Mandatory Installation - P/N 269A5192 Pinion Aft Bearing Oil Strainer Assembly in Main Transmission Assemblies Built Prior to 1969 | 01/09/1985 | |
| SN N-194 | en | Mandatory One-Time Inspection and Rework of P/N 269A4262 Inertia Reel Shoulder Harness Assemblies and Installation | 01/09/1985 | |
| SN N-195 | en | Mandatory Inspection of Main Transmission Assembly, P/N 269A5175-11, -13, -15 and -17 | 02/28/1986 | |
| SN N-196 | en | Mandatory Inspection of Throttle and Governor Control Cable Assemblies | 02/28/1986 | |
| SN N-198 | en | Mandatory Inspection and Rework of Tail Rotor Pitch Control Link Assembly, P/N 269A6091-5 and 369A1807-7 | 02/28/1986 | |
| SN N-200 | en | Mandatory One-Time Inspection of Bolt Holes at Tail Rotor Transmission Attachment Area | 03/30/1987 | |
| SN N-201 | 1 | en | Mandatory Inspection and Sealing of Main Rotor Blade Elastomeric Dampers | 03/23/1987 |
| SN N-202 | en | Mandatory Improved Methods for Checking Idle Mixture and Idle Speed. Operational Check of Fuel System | 02/23/1987 | |
| SN N-203 | en | Mandatory Visual Check to Ensure that Proper Thrust Bearing Tube is Installed | 11/19/1986 | |
| SN N-204 | en | Mandatory Identification and Possible Replacement of Collective Pitch Mixer Bellcrank | 06/16/1987 | |
| SN N-205 | en | Mandatory Identification and Possible Replacement of Radio Communication Relay | 08/22/1986 | |
| SN N-206 | en | Mandatory United Instruments, Inc. Altimeters (SZA Part No. 369H4505) | 04/17/1987 | |
| SN N-208 | en | Mandatory Identification and Possible Replacement of Tail Rotor Fork Bolt | 11/19/1986 | |
| SN N-209 | en | Mandatory One-Time Inspection of Belt Drive Upper Pulley Assembly | 04/09/1987 | |
| SN N-210 | 1 | en | Mandatory Identification of Throttle Cable Assemblies; Inspection of P/N 269A4683(BSC) or -3 Throttle Cable Assemblies having Threaded End Fittings; Replacement of P/N 269A4683(BSC) or -3 Throttle Cable Assemblies having Threaded and/or Aluminum End Fitting | 05/30/1991 |
| SN N-211 | en | Mandatory Periodic Inspection of Engine Lower Coupling Driveshaft Boot P/N 269A5473 | 11/03/1987 | |
| SN N-212 | en | Mandatory One-Time X-ray Inspection of Tail Rotor Blade Spar P/N 269A6035-21 and -23 | 03/10/1988 | |
| SN N-213 | en | Mandatory Daily Visual Inspection of Droop Stop Nut; One-time Dye Penetrant Inspection of Droop Stop Nut P/N 269A1340 | 09/29/1987 | |
| SN N-214 | en | Mandatory Reduced Service Lives for P/N 269A6065 and 369A1706 Tail Rotor Retention Strap Assemblies | 11/03/1987 | |
| SN N-215 | en | Mandatory Update of Model 269B and 269C Pilot's Flight Manual; Installation of 269A9958-5 and 269A9928-7 Center Cover Support Bracket | 09/21/1988 | |
| SN N-216 | en | Mandatory Magnetic Particle Inspection of Main Transmission Pinion Assembly | 11/03/1987 | |
| SN N-217 | en | Mandatory Identification of Center Frame Aft Cluster Fittings; Installation of P/N 269A4646-19 Support Strut Placards | 01/29/1988 | |
| SN N-218 | en | Mandatory Replacement of Auxiliary Fuel Quantity Placard; Installation of P/N 269A4106-3 Instrument Cluster as Replacement for P/N 269A4106 Instrument Cluster | 01/22/1988 | |
| SN N-220 | en | Mandatory One-Time Inspection of P/N 269A2234-3 and 269A2235-3 Aft Cluster Fittings | 01/29/1988 | |
| SN N-221 | en | Mandatory Return of Cluster Fittings in Spares Inventory; Dye Penetrant Inspection and Removal of Sample Piece from Aft Cluster Fittings; Daily Visual Inspection of Aft Cluster Fittings | 01/29/1988 | |
| SN N-222 | en | Mandatory Textron Lycoming Service Bulletins: No. 480 Oil and Filter Change and Cleaning No. 369G Engine Inspection after Overspeed or Overboost | 09/21/1988 | |
| SN N-224 | en | Mandatory Inspection and Possible Replacement of P/N 33-199-915 Fuel Filter Element (Wire Mesh Screen without Stiffeners) | 09/21/1988 | |
| SN N-226 | en | Mandatory Identification of Beld Drive Clutch Spring Assembly, Inspection of Belt Drive Clutch Engagement Cable, Field Retrofit of 269A5483-1 and 269A5483-3 Beld Drive Clutch Spring Assemblies with New Cable Sub-Assemblies | 07/03/1989 | |
| SN N-227 | en | Mandatory Inspection of Main Rotor Pitch Bearing Snap Ring Lockwasher | 07/03/1989 | |
| SN N-229 | 1 | en | Mandatory Part Number Conversion of 369 Series Part Numbers to 269 Series Part Numbers that are Used on 269 Series Helicopters | 02/20/1992 |
| SN N-231 | en | Mandatory Identification and Possible Repair of Precision Airmotive Fuel Injector Model RSA-7AA1, Precision Airmotive Service Bulletin PRS-92 | 05/31/1989 | |
| SN N-232 | en | Mandatory Inspection of Tail Rotor Driveshaft Damper block Assembly P/N 269A2330-3 | 10/06/1989 |
| Name | Revision | Lang | Subject | Date |
|---|---|---|---|---|
| WB F-476A | en | SGU 2-22 | 06/30/1964 | |
| WB I-434 | en | SGS 1-23 | ||
| WB I-4032 | en | SGS 1-26 | 06/30/1969 | |
| WB I-4226 | en | SGS 1-23 | 12/31/2011 | |
| WB I-4356-1 | en | SGS 2-32 | 05/31/1965 | |
| WB I-4427-1 | en | SGS 2-33A | 06/30/1974 | |
| WB I-4518-1 | en | SGS 1-34 | 05/31/1971 | |
| WB I-4558-1 | en | SGS 1-34R | 06/30/1971 | |
| WB I-4636-1 | en | SGS 1-35 | 02/29/1976 | |
| WB I-4636-1C | en | SGS 1-35C | 04/30/1975 | |
| WB I-4663 | en | SGS Series - Balance Limits - Control Surfaces | 04/30/1995 | |
| WB I-4741-1 | en | SGS 1-36 | 06/30/1980 |