Service Publications
 Service Bulletins
SB-AG-001 Conversion of Model PT6/S-2R from the PT6A-34 Engine to the PT6A-34AG Engine (76k PDF format)
SB-AG-002 Replacement of Beta Light Microswitch (208k PDF format)
SB-AG-01 Inspection of Vertical Fin Structure (125k PDF format)
SB-AG-02A Inspection of Rutter Assembly P/N 5-4031-41 (108k PDF format)
SB-AG-03 Seat Cushion Replacement (59k PDF format)
SB-AG-04 Wheel Installation (69k PDF format)
SB-AG-05 Re-routing of Fuel Vapor and Primer Line (182k PDF format)
SB-AG-06 Replacement of Engine Oil Cooler Valve (169k PDF format)
SB-AG-07 Improve Hopper Latch (64k PDF format)
SB-AG-08 Carburetor Air Selector Valve Assembly Inspection (266k PDF format)
SB-AG-09 Rudder Hinge Inspection (406k PDF format)
SB-AG-10 Sulphur Dusting Placard Installation (63k PDF format)
SB-AG-11 Inspection and/or Replacement of Aileron Hinge Brackets (274k PDF format)
SB-AG-12 Right Wing Rib Rivet Inspection and/or Rib Replacement (461k PDF format)
SB-AG-12Rev1 Right Wing Rib Rivet Inspection and/or Rib Replacement (58k PDF format)
SB-AG-13 Inspection of Vertical Fin Structure (125k PDF format)
SB-AG-14 Fuel System Modification (258k PDF format)
SB-AG-15 Rudder Upper Hinge Inspection (214k PDF format)
SB-AG-15Rev1 Rudder Upper Hinge Inspection (78k PDF format)
SB-AG-16 Fuselage Upper Longeron Repair (220k PDF format)
SB-AG-17 Aft Cockpit Bulkhead Reinforcement (100k PDF format)
SB-AG-18 Reinforcement of Engine Control Bellcrank Supports (185k PDF format)
SB-AG-19 Fuselage Upper Longeron Inspection and Repair (201k PDF format)
SB-AG-20 Metal Tail Drain Holes (102k PDF format)
SB-AG-21 Metal Fin Spar Reinforcement (618k PDF format)
SB-AG-22 Aileron Hinge Brackets (95k PDF format)
SB-AG-23 Wing Spar Inspection (218k PDF format)
SB-AG-24 Horizontal Stabilizer Strut Attach Inspection (398k PDF format)
SB-AG-25 Vertical Stabilizer Rudder Hinge Inspection (101k PDF format)
SB-AG-26 PT6 Engine Forward Fireseal (98k PDF format)
SB-AG-27 S2R Control Stick Fore and Aft Pivot Bolt Inspection (99k PDF format)
SB-AG-27A S2R Control Stick Fore and Aft Pivot Bolt Inspection (84k PDF format)
SB-AG-28 Unapproved Wingtip Modification (106k PDF format)
SB-AG-29 Wing Spar Corrosion (377k PDF format)
SB-AG-30 Spar Cracks Under Aileron Brackets (1,033k PDF format)
SB-AG-31 Main Landing Gear Shock Strut Inspection and Repair (78k PDF format)
SB-AG-32 Fin Front Spar Attachment to Horizontal Stabilizer (180k PDF format)
SB-AG-33 Sheared Huck Bolts in the Outer Wing (110k PDF format)
SB-AG-35 NDT Inspection of Spar Caps in the Netherlands(107k PDF format)
SB-AG-36 Main Landing Gear Shock Strut Modification(105k PDF format)
SB-AG-37 Cracks in Horizontal Stabilizer Spar(105k PDF format)
SB-AG-38 Vertical Fin Rear Spar Modification(114k PDF format)
SB-AG-39 Wing Spar Inspection and Fatigue Life Extension
SB-AG-39 Rev. 1 Revised Compliance Options and Inspection Intervals
SB-AG-40 Fuel Tank Inspection (77k PDF format)
SB-AG-41 AFT Fuselage Tubing(75k PDF format)
SB-AG-42 Main Landing Gear Attach Bolt Installation(62k PDF format)
SB-AG-43 Wing Spar Strap Installation (61k PDF format)
SB-AG-44 Oil Vent Tube Modification (54k PDF format)
SB-AG-45 Rev B FIN SPAR & ATTACH FITTINGS INSPECTION & UPGRADE
SB-AG-46 Swaged Cable Assembly Inspection
SB-AG-47 UPPER LONGERON INSPECTION
SB-AG-48 Flap Control Torque Shaft Replacement
SB-AG-49 SEAT SUPPORT BRACKET INSPECTION AND REPAIR
SB-AG-50 PT6A-60AG P3 LINE CHAFING
SB-AG-51 WIRE BUNDLE SHORT CIRCUIT
SB-AG-53 S2R-T660 Rudder Inspection


 Service Letters
SL-AG-001 Cable Control Inspection(66k PDF format)
SL-AG-003 Aileron Cable Control Inspection (59k PDF format)
SL-AG-004 Control System Inspection (59k PDF format)
SL-AG-005 Engine Mount Inspection (61k PDF format)
SL-AG-006 Elevator Pulley Installation (63k PDF format)
SL-AG-007 Aileron Push-Pull System (75k PDF format)
SL-AG-008 Aileron Spar Inspection and Hinge Modification (69k PDF format)
SL-AG-009 Steel Aileron Hinge Installation (75k PDF format)
SL-AG-010 Marlex Fairlead Availability (66k PDF format)
SL-AG-011 Engine Mount Preventive Maintenance (60k PDF format)
SL-AG-012 Oil Tank Strap Reinforcements (59k PDF format)
SL-AG-013 S-2B Engine Mount (61k PDF format)
SL-AG-014 S-2B Engine Mount Inspection (61k PDF format)
SL-AG-015 S-2B Engine Mount (68k PDF format)
SL-AG-016 Oil Tank Straps (69k PDF format)
SL-AG-017 S-2B Engine Mount (67k PDF format)
SL-AG-018 Wing Attach Angles (75k PDF format)
SL-AG-019 Fin and Rudder Hinges (75k PDF format)
SL-AG-020 Landing Gear (69k PDF format)
SL-AG-021 Aileron Stop Cable (61k PDF format)
SL-AG-022 Elevator Trim Tab Rib Replacement (69k PDF format)
SL-AG-023 MAIN SPAR AT FUSELAGE SIDE
SL-AG-024 Rear Prop Cone (61k PDF format)
SL-AG-025 Rear Prop Cone (61k PDF format)
SL-AG-026 Aileron Control Stop Cables (65k PDF format)
SL-AG-027 Control Stick Stop Bolts (61k PDF format)
SL-AG-028 Tailwheel Trunnion Attach Shaft (176k PDF format)
SL-AG-029 Wing Center Splice (77k PDF format)
SL-AG-029 Rev A Wing Center Splice (59k PDF format)
SL-AG-030 Rudder Cable Wear (64k PDF format)
SL-AG-031 Aileron Bellcrank Attach Angles in the New Aileron Control System (SERIAL 1163 & UP) (66k PDF format)
SL-AG-032 Change of Position of Ground Wire Attachment To Ignition Switch (Bendix - Scintilla, Navy Type A-la) (120k PDF format)
SL-AG-033 Horizontal Stabilizer Leading Edge Vibration (121k PDF format)
SL-AG-034 Excessive Pin Wear on Attach Point of Lower Tail Flying Wires (71k PDF format)
SL-AG-035 Corrosion Problem Whwn Using Highly Corrosive Materials (60k PDF format)
SL-AG-036 Replacement of Lower Spar Cap (61k PDF format)
SL-AG-037 Inspection Notice - Fuselage Frame (60k PDF format)
SL-AG-038 Bracing of Welded Hopper in Early S-2C Aircraft (63k PDF format)
SL-AG-039 Fuel Vent Overflow (80k PDF format)
SL-AG-040 Modification of Brake Push Rod (67k PDF format)
SL-AG-041 Additional Boom Support (220k PDF format)
SL-AG-042 Landing Gear Axle, Thru Bolts (86k PDF format)
SL-AG-043 Wire Deflector Cable Assembly (65k PDF format)
SL-AG-044 Rudder Control Cable Fraying (64k PDF format)
SL-AG-045 Fuel Gage Malfunction (62k PDF format)
SL-AG-046 Brake Tension Rod - P/N 5-7066 (60k PDF format)
SL-AG-047 Elevator Trim Cable (58k PDF format)
SL-AG-048 Tail Wire Bracket - Upper Front Fin - Replacement (66k PDF format)
SL-AG-049 P/N 10852-1 Fire Extinguisher Placard Installation (60k PDF format)
SL-AG-051 Re-Positioning of Voltage Regular Assembly (177k PDF format)
SL-AG-052 Starter Ground Wire Bracing (121k PDF format)
SL-AG-053 Trim Tab End Rib (62k PDF format)
SL-AG-054 Main Gear Upper Shock Attach Fitting (68k PDF format)
SL-AG-055 Horizontal Stabilizer Attach Bolts (59k PDF format)
SL-AG-056 Throttle Control Bellcranks (61k PDF format)
SL-AG-057 Metallic Brake Linings (62k PDF format)
SL-AG-058 Hopper Baffle Attach T-Angle (184k PDF format)
SL-AG-059 Hopper Baffle Attach T-Angle (Rear Wall) (67k PDF format)
SL-AG-060 Fuel Gauge Tank Unit (126k PDF format)
SL-AG-061 Aileron Bay Skins (63k PDF format)
SL-AG-062 Tailwheel Housing Casting (112k PDF format)
SL-AG-063 Wind Gust Damage to Ailerons (112k PDF format)
SL-AG-064 Elevator Trim Tab Mechanism (131k PDF format)
SL-AG-065 Support Bracket for Reverse Current Relay and Voltage Regulator (496k PDF format)
SL-AG-066 Night Lighting System and Voltage Regulator Circuit Interaction (538k PDF format)
SL-AG-068 Spray Pressure Line Flex Hose (131k PDF format)
SL-AG-069 Wing Leading Edge Rib Rivets (119k PDF format)
SL-AG-070 Replacement of Brake Assembly O-Rings (143k PDF format)
SL-AG-071 Modification of Exhaust Manifold Outlet (120k PDF format)
SL-AG-072 Wind Gust Damage to Ailerons (135k PDF format)
SL-AG-073 Replacement of Tall Wheel Shock Strut Extension Assembly (201k PDF format)
SL-AG-074A Master Relay Control Circuit (311k PDF format)
SL-AG-075 Carburetor Air Box Control Cable Clamp Replacement (331k PDF format)
SL-AG-076 Carburetor Replacement (67k PDF format)
SL-AG-077 Carburetor Air Inlet Scoop Assembly Replacement (110k PDF format)
SL-AG-078 Collector Ring Replacement (241k PDF format)
SL-AG-078 Rev1 Collector Ring Replacement (328k PDF format)
SL-AG-079 Carburetor Heat Modification (365k PDF format)
SL-AG-080 Crankcase Air/Oil Separator Installation (317k PDF format)
SL-AG-080 Rev1 Crankcase Air/Oil Separator Installation (210k PDF format)
SL-AG-081 Improved Flight Characteristics (793k PDF format)
SL-AG-081 Rev1 Improved Flight Characteristics (402k PDF format)
SL-AG-082 Tail Wheel Trunnion Assembly Modification (156k PDF format)
SL-AG-083 Rework of Vertical Fin Inspection Plate Attachment (187k PDF format)
SL-AG-084 Tail Wheel Shock Strut Modification (170k PDF format)
SL-AG-085 Engine Manifold Pressure Gage Modification (71k PDF format)
SL-AG-086 Oil Supply Hose Replacement (210k PDF format)
SL-AG-087 Shoulder Harness and Inertia Reel Installation (188k PDF format)
SL-AG-088 Flying Wire Brackets Installation (238k PDF format)
SL-AG-089 Voltmeter Replacement (68k PDF format)
SL-AG-090 Elevator Trim Tab Push-Rod Replacement (415k PDF format)
SL-AG-091 Brake Master Cylinder Replacement (117k PDF format)
SL-AG-091 Rev1 Brake Master Cylinder Replacement (61k PDF format)
SL-AG-092 Carburetor Air Temperature Indicator and Improved Exhaust System Installation (987k PDF format)
SL-AG-093 Starter Torque Limit Inspection and/or Starter Replacement (73k PDF format)
SL-AG-094 Electrical System Modification (358k PDF format)
SL-AG-095 Multiple Airworthiness Certification Procedures (405k PDF format)
SL-AG-096 Fuselage Upper Longeron Inspection (138k PDF format)
SL-AG-097 Lower Wing Spar Inspaction (72k PDF format)
SL-AG-097 Rev1 Lower Wing Spar Inspaction (283k PDF format)
SL-AG-099 Wing Rib Repair (72k PDF format)
SL-AG-100 Wing Rib Repair (74k PDF format)
SL-AG-101 Improved Engine Mounting Elastomer Brackets (68k PDF format)
SL-AG-102 Starter Wiring Improvement (72k PDF format)
SL-AG-104 Firewall Fuel Filter Quick-Drain Access Hole Enlargement(69k PDF format)
SL-AG-105 Engine Air Inlet Screen Inspection(67k PDF format)
SL-AG-106 Inspection of Inlet Bowl Countersunk Screws (227k PDF format)
SL-AG-107 Battery Vent Plastic Tee
SL-AG-108 Flap Torque Shaft Assembly Inspection
SL-AG-109 Torque Chart Update
SL-AG-110 Immediate Wing Spar Improvement


 Custom Kit
CK-AG-01 Goodyear Disc Brake Installation (162k PDF format
CK-AG-02 Windshield Washer and Wiper Installation (299k PDF format)
CK-AG-03A Shoulder Harness and Inertia Reel Installation (201k PDF format)
CK-AG-04 Hopper Emergency Shutoff Valve Installation (234k PDF format)
CK-AG-05 Installation of Voltmeter (130k PDF format)
CK-AG-06 Installation of Engine Hourmeter (103k PDF format)
CK-AG-07 Installation of 70 Ampere Generator Circuit Breaker (75k PDF format)
CK-AG-08 Cleveland Disc Brakes (280k PDF format)
CK-AG-09 Replacement of Engine TRI-GAGE (68k PDF format)
CK-AG-10 Improved Hopper Door Seal (69k PDF format)
CK-AG-11 Main Landing Gear Wheel Adapter Kit (72k PDF format)
CK-AG-12 Installation of Cleveland 29-Inch Wheel and Brakes (234k PDF format)
CK-AG-12 Rev1 Installation of Cleveland 29-Inch Wheel and Brakes (379k PDF format)
CK-AG-12A Installation of Cleveland 29-Inch Wheel and Brakes (379k PDF format)
CK-AG-13 Freon Air Conditioner Installation (69k PDF format)
CK-AG-14 Hopper Vent and Baffle Kit (68k PDF format)
CK-AG-15 Cockpit Door Quick Release Hinge Installation (165k PDF format)
CK-AG-16 Hi-Speed Micro Adjust Calibrator Assembly Installation (125k PDF format)
CK-AG-17 Extended Control Stick Installation (150k PDF format)
CK-AG-18 Rudder Hinge Modification (185k PDF format)
CK-AG-18 Rev1 Rudder Hinge Modification (185k PDF format)
CK-AG-19 Permanent Ballast Installation (83k PDF format)
CK-AG-20 Power Plant Conversion - Piston to Turbine (79k PDF format)
CK-AG-21 Aileron Servo Field Conversion (72k PDF format)
CK-AG-23 ng Extension Installation (74k PDF format)
CK-AG-25 Generator Failure Warning Light Kit (68k PDF format)
CK-AG-26 Barrier Filter Installation (71k PDF format)
CK-AG-29 Wing Fatigue Life Extension (340k PDF format)
CK-AG-35 Lower Rudder Repair
CK-AG-36 FIELD CONVERSION OF S2RHG-T34 AIRCRAFT TO S2RHG-T65
CK-AG-37 Field Conversion of S2R-T34 and S2R-T34DC to allow installation of PT6A-34AG engine with the Single Line fuel system
CK-AG-38 Field Conversion of S2R-T15 Aircraft to S2R-T34
CK-AG-39 Belly Skin Reinforcement
CK-AG-41 Wing Spar Upgrade
CK-AG-41 rev A Wing Spar Upgrade revised


All materials are copyrighted under Thrush Aircraft