The Aviation DataBase: Service Information: Thrush Aircraft
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Custom Kits
NameRevisionLangSubjectDate
revised en Installation Instructions All Metal Empennage Single Cockpit Only3/30/1990
en Goodyear Disc Brake Installation2/10/1975
en Windshield Washer and Wiper Installation4/9/1975
A en Shoulder Harness and Inertia Reel Installation11/8/1976
en Hopper Emergency Shutoff Valve Installation6/27/1975
en Installation of Voltmeter7/2/1975
en Installation of Engine Hourmeter7/7/1975
en Installation of 70 Ampere Generator Circuit Breaker7/11/1975
en Cleveland Disc Brakes8/13/1975
en Replacement of Engine TRI-GAGE7/25/1975
en Improved Hopper Door Seal8/18/1975
en Main Landing Gear Wheel Adapter Kit2/13/1976
en Installation of Cleveland 29-Inch Wheel and Brakes4/28/1976
1 en Installation of Cleveland 29-Inch Wheel and Brakes9/10/1976
A en Installation of Cleveland 29-Inch Wheel and Brakes7/26/1977
en Freon Air Conditioner Installation4/28/1976
en Hopper Vent and Baffle Kit6/10/1976
en Cockpit Door Quick Release Hinge Installation11/9/1976
en Hi-Speed Micro Adjust Calibrator Assembly Installation2/9/1977
en Extended Control Stick Installation7/1/1977
en Rudder Hinge Modification2/15/1979
1 en Rudder Hinge Modification4/24/1979
en Permanent Ballast Installation12/8/1980
en Power Plant Conversion - Piston to Turbine12/13/1989
en Aileron Servo Field Conversion
en Wing Extension Installation7/30/1984
en Generator Failure Warning Light Kit10/13/1992
en Barrier Filter Installation8/3/1993
en Wing Fatigue Life Extension12/23/1997
en Field Installation of the Kaplan Splice Block12/6/2001
en Field Installation of the 22507 Lower Spar Cap8/7/2003
en Field Conversion of S2R-T65DC to S2RHG-T65DC2/29/2004
en Lower Rudder Repair9/2/2004
en Field Conversion of S2RHG-T34 Aircraft to S2RHG-T6510/13/2004
en Field Conversion of S2R-T34 and S2R-T34DC to Allow Installation of PT6A-34AG Engine with Single Line Fuel Control System8/11/2006
en Field Conversion of S2R-T15 Aircraft to S2R-T348/11/2006
en Belly Skin Reinforcement8/11/2006
A en Wing Spar Upgrade12/8/2006
en Wing Spar Upgrade2/21/2007
A en Wing Spar Upgrade3/8/2007
en Lamar Generator Control Unit Modification for S2R-T34 Single and Dual Cockpit Equipped with MVP-50T Engine Monitor8/18/2014
A en Lamar Generator Control Unit Modification for S2R-T34 Single and Dual Cockpit Equipped with MVP-50T Engine Monitor8/15/2018
B en Lamar Generator Control Unit Modification for S2R-T34 Single and Dual Cockpit Equipped with MVP-50T Engine Monitor8/28/2020
en Field Conversion of S2R-T3412/1/2016
B en Field Conversion of S2R-T347/6/2018
en Whelen OR650 Series LED Wingtip Position/Anti-Collision Light Assembly and Whelen 71544 Series LED Aft Position Light Assembly2/28/2019
en Step Upgrade2/18/2020
en Impact Resistant Windshield6/3/2020
en Battery Installation8/20/2020
en Installation of C352TS Fire Extinguisher9/28/2020
A en Installation of C352TS Fire Extinguisher6/18/2024
en Turn Light Installation1/26/2021
en Metallic Reinforced Braided Hosse Installation2/1/2021
B en Ultraviolet and Infrared Cockpit Glazing Option2/15/2022
en Wing Upgrade2/15/2022
en Belly Skin Improvements7/3/2024
A en Belly Skin Improvements9/9/2024
A en Upgrade Engine Mount Isolators Installation1/7/2025
Flight Manuals
NameRevisionLangSubjectDate
3 en S2R-G10 Single & Dual Cockpit - S/N G10-169 and Subsequent12/7/2010
4 en S2R-T34 Single & Dual Cockpit - S/N T34-273 and Subsequent1/27/2009
6 en S2R-T34 Single & Dual Cockpit - S/N T34-273 and Subsequent2/14/2014
1 en S2RHG-T65 Dual Cockpit - S/N T65HG-013DC and Subsequent2/22/2011
3 en S2R-T660 Single & Dual Cockpit - S/N T660-101 and Subsequent1/22/2001
en S2R-T660 Dual Cockpit - S/N T660-114DC and Subsequent8/12/2005
1 en S2R-T660 Single Cockpit - S/N T660-109 and Subsequent9/30/2005
en S2R-H80 Single & Dual Cockpit - S/N H80-101 & Subsequent10/9/2012
B en S2R-H80 Single & Dual Cockpit - S/N H80-101 & Subsequent3/19/2015
C en S2R-H80 Single & Dual Cockpit - S/N H80-101 & Subsequent9/3/2015
D en S2R-H80 Single & Dual Cockpit - S/N H80-101 & Subsequent11/17/2016
F en S2R-H80 Single & Dual Cockpit - S/N H80-101 & Subsequent9/22/2017
en S2R-R1340 Single & Dual Cockpit - S/N R1340-036 and Subsequent11/29/2007
1 en S2R-T65 Dual Cockpit - S/N T65-001 DC and Subsequent3/4/2004
Maintenance Manuals
NameRevisionLangSubjectDate
en S2R-G10 Single & Dual Cockpit - S/N G10-169 & up3/26/2010
en S2R-H80 Single & Dual Cockpit - S/N H80-101 & Subsequent10/17/2012
4 en S2R-H80 Single & Dual Cockpit - S/N H80-101 & Subsequent3/19/2015
5 en S2R-H80 Single & Dual Cockpit - S/N H80-101 & Subsequent11/17/2016
en S2R-R1340 Single & Dual Cockpit - S/N 036 & up1/1/2008
en S2R - S/N 1416 and Subsequent8/21/1989
en S2R-T65 - All S/Ns with DC Suffix Indicate the DUAL COCKPIT Configuration
1 en S2R-T15 (S/N T15-20 & Subsequent) & S2R-T34 (S/N T34-091 & Subsequent)7/24/1991
en S2R-T34 Single & Dual Cockpit - S/N T34-273 & up2/22/2005
1 en S2R-T34 Single & Dual Cockpit - S/N T34-273 & up2/14/2014
2 en S2R-T34 Single & Dual Cockpit - S/N T34-273 & up2/13/2017
2 en S2RHG-T65 Single & Dual Cockpit - S/N T65GH-011 & up, T65GH-013DC & up9/16/2005
2 en S2R-T660 Single & Dual Cockpit - S/N T660-109 & up, T-660-114DC & up, T660DCP & up8/5/2005
3 en S2R-T660 Single & Dual Cockpit - S/N T660-109 & up, T-660-114DC & up, T660DCP & up10/7/2015
Service Bulletins
NameRevisionLangSubjectDate
en Conversion of Model PT6/S-2R from the PT6A-34 Engine to the PT6A-34AG Engine8/25/1977
en Replacement of Beta Light Microswitch10/17/1977
en Inspection of Vertical Fin Structure11/30/1973
A en Inspection of Rudder Assembly P/N 5-4031-4112/2/1974
en Seat Cushion Replacement4/23/1974
en Wheel Installation9/19/1974
en Re-Routing of Fuel Vapor and Primer Line6/4/1975
en Replacement of Engine Oil Cooler Valve6/6/1975
en Improve Hopper Latch9/10/1975
en Carburetor Air Selector Valve Assembly Inspection9/20/1976
en Rudder Hinge Inspection1/12/1977
en Sulphur Dusting Placard Installation1/12/1977
en Inspection and/or Replacement of Aileron Hinge Brackets1/31/1977
en Right Wing Rib Rivet Inspection and/or Rib Replacement7/13/1977
1 en Right Wing Rib Rivet Inspection and/or Rib Replacement7/13/1977
en Inspection of Vertical Fin Structure4/25/1978
en Fuel System Modification8/10/1978
en Rudder Upper Hinge Inspection4/24/1979
1 en Rudder Upper Hinge Inspection4/24/1979
en Fuselage Upper Longeron Repair4/1/1984
en Aft Cockpit Bulkhead Reinforcement11/11/1984
en Reinforcement of Engine Control Bellcrank Supports1/7/1985
en Fuselage Upper Longeron Inspection and Repair1/20/1987
en Metal Tail Drain Holes7/7/1988
en Metal Fin Spar Reinforcement9/21/1988
en Aileron Hinge Brackets9/23/1988
en Wing Spar Inspection7/11/1989
en Horizontal Stabilizer Strut Attach Inspection6/20/1990
en Vertical Stabilizer Rudder Hinge Inspection7/20/1990
en PT6 Engine Forward Fireseal2/27/1991
en S2R Control Stick Fore and Aft Pivot Bolt Inspection6/10/1991
A en S2R Control Stick Fore and Aft Pivot Bolt Inspection7/24/1991
en Unapproved Wingtip Modification9/27/1991
en Wing Spar Corrosion6/15/1992
revised en Spar Cracks Under Aileron Brackets5/1/1993
en Main Landing Gear Shock Strut Inspection and Repair11/3/1992
en Fin Front Spar Attachment to Horizontal Stabilizer2/12/1993
en Sheared Huck Bolts in the Outer Wing2/24/1993
revised en Fuselage-Wing Attach Tube Beef-Up12/6/1993
en NDT Inspection of Spar Caps in the Netherlands2/22/1994
en Main Landing Gear Shock Strut Modification3/25/1994
en Cracks in Horizontal Stabilizer Spar6/27/1994
en Vertical Fin Rear Spar Modification6/27/1994
en Wing Spar Inspection and Fatigue Life Extension9/17/1996
1 en Wing Spar Inspection and Fatigue Life Extension12/12/1997
en Fuel Tank Inspection10/30/1997
en AFT Fuselage Tubing1/7/1998
en Main Landing Gear Attach Bolt Installation6/16/1999
en Fin Spar & Attach Fittings Inspection and Upgrade9/1/1999
C en Fin Spar & Attach Fittings Inspection and Upgrade2/16/2018
en Oil Vent Tube Modification1/16/2003
en Fin Front Spar Attach Bolt Upgrade and Fin Rear Spar Inspection11/18/2003
A en Fin Front Spar Attach Bolt Upgrade and Fin Rear Spar Inspection9/6/2005
B en Fin Front Spar Attach Bolt Upgrade and Fin Rear Spar Inspection6/1/2007
B en Fin Front Spar Attach Bolt Upgrade and Fin Rear Spar Inspection4/7/2008
C en Fin Front Spar Attach Bolt Upgrade and Fin Rear Spar Inspection2/16/2018
D en Fin Front Spar Attach Bolt Upgrade and Fin Rear Spar Inspection12/8/2020
en Swaged Cable Assembly3/10/2005
en Upper Longeron Inspection8/10/2005
en Flap Control Torque Shaft Replacement3/7/2006
en Seat Support Bracket Inspection and Repair8/1/2008
en PT6A-60AG P3 Line Chafing4/15/2009
en Wire Bundle Short Circuit4/24/2009
en Wing Modifications1/27/2010
en S2R-T660 Rudder Inspection7/14/2010
en S2R-T660 Elevator Push-Pull Tube End Fitting Inspection6/6/2011
en S2R-T660 Vertical Fin and Rudder Inspection6/29/2012
en S2R-H80 AFT Lower Cowl Modification12/22/2017
B en S2R-H80 AFT Lower Cowl Modification12/10/2020
A en Elevator, Rudder, and Aileron Control Systems Inspection and Hardware Replacement to Incorporate Castellated Nuts in Joints Subject to Rotation10/15/2015
en United Instruments, Inc. Service Bulletin No. 129/9/2013
en Environmental Protective Cover for EDC-3310/14/2013
A en Environmental Protective Cover for EDC-339/4/2014
B en Environmental Protective Cover for EDC-331/20/2015
en Fuel Filter Replacement on S2R-H80 Airplanes7/31/2014
A en Fuel Filter Replacement on S2R-H80 Airplanes8/13/2014
en Installation of Click Bond Electrical Grounding Spacer Stud on the HEader Tank11/20/2017
en Forward Firewall Modification5/18/2018
en S2R-T34 MVP & GCU Wiring Relocation4/9/2019
en S2R-H80 Fuel Pump Fittings & Lines - Improvement & Relocation1/25/2019
A en S2R-H80 Fuel Pump Fittings & Lines - Improvement & Relocation5/8/2023
en Installation of Stall Warning Feedback Suppression Resistor6/1/2019
en Propeller - NYCO GN3058 Grease1/14/2020
en S2R-T34 Corrections for Air Speed Indicator4/15/2021
A en Horizontal Stabilizer Attach Channel Repair2/9/2023
en H80 Propeller Shaft Care8/31/2023
en S2R-510 Main Fuel Lines Inspection & Replacement2/20/2024
en S2R-510 Air Intake Filter Inspection & Gasket Tape Installation3/11/2024
en 510 Gallon Series Tail Spring Forward Mount Support Struts Installation7/30/2024
en 510 Wing Rivets Inspection & Installation9/9/2024
Service Letters
NameRevisionLangSubjectDate
en Cable Control Inspection3/1/1960
en Aileron Cable Control Inspection11/15/1960
en Control System Inspection5/12/1961
en Engine Mount Inspection5/12/1961
en Elevator Pulley Installation5/24/1961
en Aileron Push-Pull System5/12/1961
en Aileron Spar Inspection and Hinge Modification6/15/1961
en Steel Aileron Hinge Installation6/15/1961
en Marlex Fairlead Availability6/12/1961
en Engine Mount Preventive Maintenance6/20/1961
en Oil Tank Strap Reinforcements8/10/1961
en S-2B Engine Mount9/15/1961
en S-2B Engine Mount Inspection1/8/1962
en S-2B Engine Mount3/16/1962
en Oil Tank Straps7/17/1962
en S-2B Engine Mount7/15/1962
en Wing Attach Angles7/17/1962
en Fin and Rudder Hinges8/22/1962
en Landing Gear9/5/1962
en Aileron Stop Cable11/27/1962
en Elevator Trim Tab Rib Replacement11/27/1962
en Main Spar at Fuselage Side2/18/1963
en Rear Prop Cone4/12/1963
en Rear Prop Cone5/3/1963
en Aileron Control Stop Cables6/7/1963
en Control Stick Stop Bolts8/21/1963
en Tailwheel Trunnion Attach Shaft9/12/1963
en Wing Center Splice10/15/1963
A en Wing Center Splice6/2/1972
en Rudder Cable Wear10/15/1963
en Aileron Bellcrank Attach Angles in the New Aileron Control System (SERIAL 1163 & UP)10/17/1963
en Change of Position of Ground Wire Attachment to Ignition Switch (Bendix - Scintilla, Navy Type A-la)4/20/1964
en Horizontal Stabilizer Leading Edge Vibration3/20/1964
en Excessive Pin Wear on Attach Point of Lower Tail Flying Wires3/30/1964
en Corrosion Problem When Using Highly Corrosive Materials3/31/1964
en Replacement of Lower Spar Cap3/22/1965
en Inspection Notice - Fuselage Frame2/10/1965
en Bracing of Welded Hopper in Early S-2C Aircraft5/6/1964
en Fuel Vent Overflow3/16/1965
en Modification of Brake Push Rod11/22/1965
en Additional Boom Support3/25/1966
en Landing Gear Axle, Thru Bolts5/16/1966
en Wire Deflector Cable Assembly7/1/1966
en Rudder Control Cable Fraying7/18/1966
en Fuel Gage Malfunction8/30/1966
en Brake Tension Rod - P/N 5-70662/10/1967
en Elevator Trim Cable3/9/1967
en Tail Wire Bracket - Upper Front Fin - Replacement5/26/1967
en P/N 10852-1 Fire Extinguisher Placard Installation8/25/1967
en Re-Positioning of Voltage Regular Assembly2/1/1969
en Starter Ground Wire Bracing2/1/1969
en Trim Tab End Rib2/1/1969
en Main Gear Upper Shock Attach Fitting2/1/1969
en Horizontal Stabilizer Attach Bolts2/1/1969
en Throttle Control Bellcranks2/1/1969
en Metallic Brake Linings5/15/1969
en Hopper Baffle Attach T-Angle6/6/1969
en Hopper Baffle Attach T-Angle (Rear Wall)6/24/1969
en Fuel Gauge Tank Unit5/15/1971
en Aileron Bay Skins7/13/1970
en Tailwheel Housing Casting7/13/1970
en Wind Gust Damage to Ailerons7/13/1970
en Elevator Trim Tab Mechanism3/9/1971
en Support Bracket for Reverse Current Relay and Voltage Regulator
en Night Lighting System and Voltage Regulator Circuit Interaction
en Spray Pressure Line Flex Hose12/3/1974
en Wing Leading Edge Rib Rivets2/24/1975
en Replacement of Brake Assembly O-Rings2/27/1975
en Modification of Exhaust Manifold Outlet6/6/1975
en Wind Gust Damage to Ailerons6/19/1975
en Replacement of Tall Wheel Shock Strut Extension Assembly7/7/1975
A en Master Relay Control Circuit10/24/1975
en Carburetor Air Box Control Cable Clamp Replacement10/1/1975
en Carburetor Replacement1/30/1976
en Carburetor Air Inlet Scoop Assembly Replacement1/30/1976
en Collector Ring Replacement1/30/1976
1 en Collector Ring Replacement1/30/1976
en Carburetor Heat Modification1/30/1976
en Crankcase Air/Oil Separator Installation2/4/1976
1 en Crankcase Air/Oil Separator Installation4/12/1976
en Improved Flight Characteristics2/6/1976
1 en Improved Flight Characteristics3/19/1976
en Tail Wheel Trunnion Assembly Modification2/5/1976
en Rework of Vertical Fin Inspection Plate Attachment2/5/1976
en Tail Wheel Shock Strut Modification2/5/1976
en Engine Manifold Pressure Gage Modification4/13/1976
en Oil Supply Hose Replacement6/1/1976
en Shoulder Harness and Inertia Reel Installation11/8/1976
en Flying Wire Brackets Installation12/8/1976
en Voltmeter Replacement12/8/1976
en Elevator Trim Tab Push-Rod Replacement2/8/1977
en Brake Master Cylinder Replacement2/25/1977
1 en Brake Master Cylinder Replacement8/25/1977
en Carburetor Air Temperature Indicator and Improved Exhaust System Installation5/6/1977
en Starter Torque Limit Inspection and/or Starter Replacement9/2/1977
en Electrical System Modification11/3/1980
en Multiple Airworthiness Certification Procedures4/1/1982
en Fuselage Upper Longeron Inspection7/1/1982
en Lower Wing Spar Inspection10/1/1982
1 en Lower Wing Spar Inspection8/23/1994
revised en Wing Rib Repair7/17/1990
revised en Wing Rib Repair7/17/1990
en Improved Engine Mounting Elastomer Brackets2/15/1993
en Starter Wiring Improvement8/17/1993
en Firewall Fuel Filter Quick-Drain Access Hole Enlargement5/15/1996
en Engine Air Inlet Screen Inspection6/19/1996
en Inspection of Inlet Bowl Countersunk Screws1/16/2001
en Battery Vent System Plastic Tees Inspection10/28/2004
en Flap Torque Shaft Assembly Inspection3/28/2005
en Torque Chart Update10/5/2005
en Wing Spar Status Update7/17/2007
en Engine Mount and Mount Isolator Inspection and Repair6/10/2008
en Rewiring the External Power Receptacle (APU) so that the Electrical System is Energized Immediately when Power is Applied to the APU5/19/2010
en Flap Light Nuts Rubbing Flaps6/3/2010
en Fuel Filter Installation Compliance Check2/7/2014
en GE Turboprop GH80-100 Engine Fuel Filtration3/3/2014
en H10 Airplane 10 Micron Fuel Filter Servicing1/28/2015
en H80 Airplane Flight Manual Revision1/15/2015
en Relocating Engine Control Hardware to Improve Engine Response6/15/2015
en Rudder Pedal Mechanism Inspection6/11/2018
en Aircraft Servicing and Fuel System Best Practices9/13/2018
en Aircraft Landing Gear10/23/2020
en S2R-T34 Airplane Flight Manual Supplement Correction for Indicated Air Speeds11/12/2020
en All S2R Models - Aileron Bell Crank Support Tubes Inspection3/21/2024
en 510 Series Tail Spring - Forward Mount Slippage5/9/2024
en Baggage Compartment Door Inspection6/7/2024
en Control Stick Wiring Harness Inspection7/1/2024
en Air Barrier Filter Inspection7/10/2024
en S2R-T660 Tail Spring Life Limitation12/23/2024