Comanche and Twin Comanche Service Bulletins
Listing from 762-332: Service Bulletin and Service Letter Index, July 31, 2023 Revision
Available from Piper directly.
| Number | Subject | Models Affected | Date | Part/Kit No. | A.D. No.1 | ATA Code | Grid |
|---|---|---|---|---|---|---|---|
| 164 | ADF Indicator Excess Wire, Battery Cable Insulation, Muffler Replacement, Nose Gear Door Retraction Rod, Control Wheel Replacement and Reinforcement Nose Wheel Steering Arm Mounting Bracket | PA-24 | 5/16/58 | 2J17 | |||
| 167 | Oil Cooler Line Clearance | PA-24 | 1/6/59 | 451-855 | 59-07-05 | 7920 | 2K1 |
| 168 | Nose Gear Retraction Assist Cord | PA-24 | 1/16/59 | 754-205 | 58-25-05 | 3230 | 2K2 |
| 171 | Weight And Balance | PA-24, PA-24-250 | 3/18/59 | 800 | 2K4 | ||
| 172 | Control Wheel Sprocket Mounting Hole, Inspection of | PA-24, PA-24-250 (w/Autocontrol) | 4/27/59 | ** 2 | 59-12-09 | 2700 | 2K5 |
| 173 | Aileron Balance Weight Attachment, Bulkhead | PA-24, PA-24-250 | 6/23/59 | 754-233 | 59-13-02 | 2710 | 2K13 |
| 177 | Fuel Cell Filling Instructions | PA-24, PA-24-250 | 8/5/59 | 21994-00 | 2810 | 2K20 | |
| 178 | Control Tube Guide Blocks Safety Wiring of | PA-24, PA-24-250 | 9/24/59 | 2700 | 2K22 | ||
| 179 | Door Window, Refitting of | PA-24, PA-24-250 | 11/6/59 | 5630 | 2K24 | ||
| 180 | Fuel Cell Vent Tubes, Modification of | PA-24, PA-24-250 | 11/6/59 | 59-26-02 | 2810 | 2L2 | |
| 187 | Safety Switches. PA-24 and 24-250 Landing Gear-Service Letter 314A, Dated June 8, 1954 | PA-24 | 4/15/60 | 754-221 | 3230 | 2L18 | |
| 190A | Insulation-Cabin Heat Induction System | PA-24 | 3/14/60 | 754-308 | 2140 | 2L23 | |
| 191 | Hinge Bracket, Aileron - Part No. 20211-00 | PA-24, PA-24-250 | 6/16/60 | 20211-00 | 5150 | 3A1 | |
| 192 | Throttle Limit Switch Bracket | PA-24 | 6/17/60 | 754-334 | 7610 | 3A3 | |
| 193 | Fuel Cell Vent Tube, Modification of | PA-24 | 6/17/60 | 60-24-03 | 2810 | 3A5 | |
| 197 | Master Cylinder, Brake, Replacement of | PA-24 | 12/2/60 | 455-929 | 3240 | 3A12 | |
| 201 | Vacuum Pumps, Dry, Replacement of | PA-24 | 4/13/61 | 481-681 | 3710 | 3A21 | |
| 202 | Exhaust System, Comanche. Inspection of | PA-24 | 5/22/61 | 754-396 | 61-20-02 | 7810 | 3A22 |
| 205 | Circuit Protector Wiring, Inspection of | PA-24 | 8/15/61 | 2400 | 3B3 | ||
| 208 | Gascolator Bowl Drain Valve | PA-24 | 12/19/61 | 7310 | 3B9 | ||
| 210 | Muffler Shrouds, Replacement of | PA-24, 24-250 | 10/3/62 | 754-484 | 62-26-05 | 7810 | 3B12 |
| 211 | Main Fuel Cell Cavity Modification | PA-24-250 | 11/2/62 | 754-492 | 2810 | 3B17 | |
| 212 | Engine-Driven Fuel Pump, Installation of Vent Lines (PA-24-250 W/Fuel Injection) | PA-24-250 | 12/5/62 | 756-700 | 2820 | 3B20 | |
| 216 | Fuel Cell Drain Modification | PA-24, 24-250 | 8/5/63 | 756-756 | 68-13-03 | 2810 | 3C4 |
| 218 | Vacuum Pump Spined Coupling, Replacement of | PA-24, 24-250, PA-30 | 11/11/63 | 753-865 | 3710 | 3C9 | |
| 219A | Heater, 940DB, Modification And Rewiring | PA-30 | 9/23/64 | 756-815 | 2140 | 3C12 | |
| 220 | Alternate Air Doors, Replacement of | PA-30 | 3/3/64 | 756-794 | 64-09-05 | 7160 | 3C14 |
| 222A | Airspeed Limits, Restriction To, Removal of (Replacement of Stabilator Torque Tube) | PA-30 | 8/10/64 | 756-827 | 64-28-03 | 3410 | 3C17 |
| 224 | Pitch Servo - Modification of - Mitchell Bulletin No. A55 | PA-24-250, PA-24-260. PA-24-400, PA-30 | 4/7/65 | 756-923 | 65-11-04 | 2210 | 3D3 |
| 228 | Fuel Purge Valve Hose Assembly, Replacement of | PA-24-400 | 1/7/66 | 756-994 | 66-30-07 | 2810 | 3D15 |
| 229A | Airspeed Limits, Restriction, Removal of | PA-30 | 6/17/66 | ** 2 | 66-28-06 | 3410 | 3D16 |
| 231A | Fuel Tank Caps | PA-24, 24-250 | 10/10/66 | 25983-00 | 68-13-03 | 2810 | 3D23 |
| 232 | Brake Disc Assembly, Inspection of | PA-30 | 6/8/66 | 757-039 | 3240 | 3D24 | |
| 235 | Airspeed Limit, Never-To-Exceed Standardization of | PA-30 | 9/16/66 | ** 2 | 66-28-06 | 3410 | 3E6 |
| 236 | Oxygen Cylinder | PA-30 | 12/29/66 | 757-094 | 67-19-05 | 3510 | 3E8 |
| 238 | Fuel Purge Valve Hose Replacement | PA-24-400 | 12/7/66 | 757-099 | 3420 | 3E10 | |
| 246 | Oxygen Cylinder Rear Retaining Strap Modification of | PA-30 | 3/21/67 | 758-109 | 67-19-05 | 3510 | 3E22 |
| 263 | Flight Manual Revision | PA-30 | 1/15/68 | 760-168 | General | 3G9 | |
| 280 | Artificial Horizon, R.C. Allen 3", Case Leakage of | PA-24-260, PA-30 | 7/10/68 | 3420 | 3H20 | ||
| 299 | Flight Manual Revision | PA-30 “C” | 5/29/69 | ** 2 | General | 3K2 | |
| 301A | Airplane Flight Manual And New Placards | PA-30 | 11/25/69 | 760-354, 760-355 | 69-24-04 | 1100 | 3K5 |
| 306 | Alternator System Modification | PA-30 “C” | 1/9/70 | 760-347 | 70-22-05 | 2430 | 3K14 |
| 310 | Modifications, Twin Comanche (Airspeed Marking, Stall Warning Horn Installation) | PA-30 | 5/6/70 | 760-408, 760-373 | 3410, 2700 | 3K24 | |
| 314A | Selector Valve, Fuel Modification | PA-30, PA-39 | 9/28/70 | 760-444 | 2820 | 3L8 | |
| 315 | Limit VNE Airspeed | PA-30 | 7/8/70 | ** 2 | 1100 | 3L10 | |
| 320A | Autopilot Servo and Bridle Cable Installation, III Series, Inspection of | PA-24-260, PA-30, PA-39 | 7/6/72 | 2210 | 3L23 | ||
| 324 | Vacuum Pump Adapter Drive Assembly | PA-24, PA-30, PA-39 | 9/29/70 | 3710 | 4A9 | ||
| 331 | Electric Trim Switch Inspection and Modification | PA-24-260, PA-30, PA-39 | 2/5/71 | 760-505 | 71-12-05 | 2730 | 4B3 |
| 336 | Seat Frame Tube Replacement, Vertically Adjustable | PA-24-260, PA-30, PA-39 | 3/11/71 | 2510 | 4B18 | ||
| 343 | Hartzell Service Bulletin No. 96, Amended 8/18/71 And Supplement No. 1 Amended 8/18/71 | PA-30 | 9/9/71 | ** 2 | 6110 | 4C13 | |
| 349 | Switch Modification, Master, Electrical System | PA-30, PA-39 | 4/26/72 | ** 2 | 2450 | 4D5 | |
| 354B | Fuel Selector Valve Lubrication | PA-24-180, PA-24-250 | 5/19/82 | ** 2 | 60-10-08 | 2820 | 4D15 |
| 362 | VNE Speed Limit | PA-24-250, PA-24-260 | 8/14/72 | ** 2 | 3410 | 4E19 | |
| 362A | Rudder Balance Weight Installation (Does not cancel Service Bulletin No 362) | PA-24-180, PA-24-250, PA-24-260 | 10/6/72 | 760-705 | 2720 | 4E22 | |
| 381 | Manual Revision, Pilot’s Operating/Airplane Flight | PA-39 | 8/29/73 | ** 2 | General | 4G1 | |
| 394 | Rudder Pedal, Warning, Improper Use of | PA-24-180, PA-24-250 PA-24-260, PA-24-400, PA-30, PA-39 | 9/28/73 | 757-436 | 2720 | 4H7 | |
| 411A | Stabilator Torque Tube Bearing Block Attachment Fitting Rivet Replacement | PA-24-180, PA-24-250, PA-24-260, PA-24-400, PA-30, PA-39 | 4/10/74 | 760-835 | 94-13-10 | 2740 | 4J9 |
| 464A | Stabilator Torque Tube Bearing Block Attachment Fitting Rivets, Inspection of | All PA-24 Series, PA-30, PA-39 | 3/22/76 | 760-835 | 75-27-08 | 5530 | 5C16 |
| 496 | Stabilator Balance Weight Tube Replacement | PA-24-250, PA-24-260 | 6/4/76 | 28035-00 | 76-19-07 | 2740 | 5G13 |
| 511A | Oxygen System Outlet Refinement | PA-24-260, PA-24-400, PA-30, PA-39 | 9/24/76 | 761-032, 752-583 | 3510 | 5I3 | |
| 515 | Control Cable Ball Joint Retainer Installation | PA-24-250, PA-24-260, PA-24-400, PA-30, PA-39 | 1/17/77 | 55447-02 | 7610 | 5I10 | |
| 527 | Electric Trim Switch Modification | PA-24-260, PA-30, PA-39 | 11/15/76 | 756-047 | 77-09-10 | 2740 | 5J18 |
| 5463 | Inspection of Whelen Wing Tip Strobe Lights; Reference F.A.A. AD 75-05-04 | PA-24-260 “C”, PA-39 | |||||
| 597 | Fuel Selector Valve Replacement | PA-30, PA-39 | 4/19/78 | 492-137 | 78-12-07 | 2840 | 6H10 |
| 677 | Publications for Aircraft Operation | All Piper Models | 5/20/80 | PARA 15.0 | 7H4 | ||
| 751 | Spar Cap Chafing Inspection | PA-24-400, PA-24-180, PA-24-250, PA-24-260, PA-30, PA-39 | 5/24/83 | ** 2 | 83-19-03 | 5740 | 8G13 |
| 771A | Parking Brake Application | PA-24, PA-24-250, PA-24-260, PA-24-400, PA-30, PA-39 | 9/6/11 | 81090-002 | 85-02-05 | 1130 | |
| 798 | “TURBO” Marking Removal | PA-24 Series, PA-30, PA-39 | 12/11/84 | N/A | 1110 | 9B19 | |
| 805A | TRW Hartzell Propeller Service Bulletin No. 142B (O-ring Deterioration) | PA-24-260, PA-30, PA-39 | 3/14/86 | N/A | 6110 | 9D15 | |
| 836A | Aluminum Wire Inspection/Replacement | PA-24, PA-24-250. PA-24-260, PA-24-400, PA-30, PA-39 | 8/26/86 | ** 2 | 2400 | 9J4 | |
| 855 | Use of Automobile Gasoline In Piper Aircraft | All Piston Powered Models | 1/14/87 | N/A | 2800 | 10A7 | |
| 861 | Heated Alternate Air Induction System Installation | PA-24-260 | 5/4/87 | 760-516 | 91-21-09 | 7314 | 10B1 |
| 884 | Lock Wiring of V-Band Couplings | PA-24-260, PA-30, PA-39 | 4/8/88 | ** 2 | 7800, 2100 | 10G20 | |
| 980 | Should Harness Installation | PA-24, PA-24-250, PA-24-260, PA-24-400, PA-30, PA-39 | 1/18/95 | ** 2 | 5500 | 10bB10 | |
| 1022 | Inspection of Induction Air Filter and Distribution of Purolator Service Bulletin, SB090298.01 | PA-24, PA-24-250, PA-24-260 | 9/22/98 | 460-632 | 99-05-09 | 7167 | 10bI20 |
| 1026 | Distribution of Parker Hannifin Airborne Service Letter 48, “Inspection/Replacement of dry air pump flexible couplings” | PA-24, PA-24-250, PA-24-260, PA-24-400, PA-30, PA-39 | 11/5/98 | 753-910 | 3711 | 10bJ20 | |
| 1035A | Distribution of Textron Lycoming Service Bulletin 529B, “Reprint of Crane/Lear Romec Service Bulletin No. 101SB020, Rev. 3” | PA-24-260, PA-24-400 | 3/22/07 | ** 2 | 2003-14-03 | 7311 | 10bL16 |
| 1041 | Distribution of Airborne Service Letter Number 56, “Inspection and Cleaning of Airborne Air Filter Elements” | PA-24, PA-24-250, PA-24-260, PA-24-400, PA-30, PA-39 | 9/25/00 | ** 2 | 3714 | 10cB1 | |
| 1160A 1160 | Stabilator Torque Tube Assembly Inspection | PA-24, PA-24-250, PA-24-260, PA-24-400, PA-30, PA-39 | 11/28/2022 | 16067-000, 652-579 | 5519 | 10dK15 | |
| 1189 | Stabilator Horn Assembly Inspection | PA-24, PA-24-250, PA-24-260, PA-24-400, PA-30, PA-39 | 4/29/10 | ** 2 | 2012-17-06 | 5510 | |
| 1266 | Fuel Warning Placard and POH Inspection | PA-24-250, PA-24-260, PA-24-400, PA-30, PA-39 | 12/16/14 | ** 2 | 2015-24-05 | 1130 | |
| 1284B | Lycoming SB 622A, Slick/Champion Aerospace SB1-15A, Potential decreased service life of Slick 4-cylinder magneto distributer gear assemblies | PA-24 | 4/12/2019 | N/A | 7414 | ||
| 1286A | Lycoming SB 621A, Diaphragm-Type Fuel Pump Replacement | PA-24-250, PA-24-260 | 10/30/15 | N/A | 7310 | ||
| 1297 | Altimeter Inspection and Replacement (United Instruments SB No. 13) | All | 5/10/16 | N/A | 3416 |