# N16SC: 1970 Piper PA-31

- Status: Valid registration
- Airframe: [Piper PA-31](https://openairdocs.org/model/piper-pa-31) (registry code 7103103, 8 seats)
- Engine: [Lycoming TI0-540 series](https://openairdocs.org/engine/lycoming-ti0-540-series) (registry code 41533)
- Data sheets: [TCDS A20SO](https://openairdocs.org/tcds/A20SO) (Piper Aircraft Inc.), [TCDS E14EA](https://openairdocs.org/tcds/E14EA) (Lycoming Engines) (OpenAirDocs)
- Serial number: 31-639
- Year built: 1970
- Type: Fixed wing multi engine
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: February 6, 1970
- Certificate issued: January 19, 2024
- Expires: January 31, 2031
- Mode S code: A0F0E8
- Registered owner: [Western Alaska Aircraft Leasing LLC](https://openairdocs.org/faa-owner/WESTERN%20ALASKA%20AIRCRAFT%20LEASING%20LLC)
- Location: [Pahrump, NV](https://openairdocs.org/faa-place/NV/Pahrump)
- Owner type: LLC
- Owner's area on the map: 36.3916° N, 116.0576° W: Placed by OpenAirDocs at the center of ZIP code 89060, within about 12 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=16SC
- Page: https://openairdocs.org/aircraft/N16SC

From the FAA registry file of October 22, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Lycoming TI0-540 model are included.

## ADs that may apply (OpenAirDocs): 113 in force

### Matched by airframe (Piper PA-31)

- [AD 2023-09-09](https://openairdocs.org/ad/2023-09-09): Exhaust Turbine System (Recip) · Aerostar PA-60-600 (Aerostar 600), PA-60-601 (Aerostar 601), PA-60-601P (Aerostar 601P) and 292 more. Effective Jul 17, 2023
- [AD 2017-10-20](https://openairdocs.org/ad/2017-10-20): Fuselage--Main Bulkhead · Piper PA-31, PA-31-300, PA-31-325 and 1 more. Effective Jun 29, 2017
- [AD 2016-05-01](https://openairdocs.org/ad/2016-05-01): Fuselage · Piper PA-31, PA-31-300, PA-31-325 and 1 more. Effective Apr 15, 2016
- [AD 2015-24-05](https://openairdocs.org/ad/2015-24-05): PLACARDS AND MARKINGS; Interior Placards · Piper PA-23-250, PA-24-250, PA-24-260 and 7 more. Effective Jan 12, 2016
- [AD 2013-10-04](https://openairdocs.org/ad/2013-10-04): Engine Exhaust · Piper PA-31, PA-31-325 and PA-31-350. Effective Jul 17, 2013
- [AD 2009-13-06 R1](https://openairdocs.org/ad/2009-13-06-R1): Doors · Piper PA-23, PA-23-160, PA-23-235 and 16 more. Effective Nov 3, 2011
- [AD 2006-03-08](https://openairdocs.org/ad/2006-03-08): Vacuum pumps · Aero Advantage 14-19, 14-19-2, 14-19-3 and 299 more. Effective Mar 10, 2006
- [AD 2005-18-20](https://openairdocs.org/ad/2005-18-20): "FASTprop" propeller de-icers · Hartzell PHC-C3YF-1RF/F8468A(B,K)-8R constant speed propeller (STC SA00718LA or 17 others). Effective Oct 14, 2005
- [AD 2004-25-16 R1](https://openairdocs.org/ad/2004-25-16-R1): Fuel regulator shutoff valve · Bombardier CL-215-1A10, CL-215-6B11 (CL-215T Variant), CL-215-6B11 (CL-415 Variant) and 64 more. Effective Jun 20, 2005
- [AD 2003-24-07](https://openairdocs.org/ad/2003-24-07): Rudder torque tube · Piper PA-31, PA-31-300, PA-31-325 and 7 more. Effective Feb 9, 2004
- [AD 2001-06-01](https://openairdocs.org/ad/2001-06-01): Elevator Structure · Piper PA-31, PA-31-300, PA-31-325 and 7 more. Effective May 8, 2001
- [AD 2000-25-01](https://openairdocs.org/ad/2000-25-01): Main Landing Gear Door Hinges · Piper PA-31, PA-31-300, PA-31-325 and 7 more. Effective Jan 19, 2001
- [AD 2000-06-06](https://openairdocs.org/ad/2000-06-06): Pneumatic Deicing Boots · Piper PA-31, PA-31-300, PA-31-325 and 7 more. Effective May 5, 2000
- [AD 98-21-21 R1](https://openairdocs.org/ad/98-21-21-R1): Electric Inflatable Door Seals · Cessna 17-30, 17-30A, 17-31 and 267 more. Effective May 1, 2000
- [AD 99-14-01](https://openairdocs.org/ad/99-14-01): AFM - Limitations Section - Icing · Piper PA-23, PA-23-160, PA-23-235 and 21 more. Effective Aug 17, 1999
- [AD 99-12-05](https://openairdocs.org/ad/99-12-05): Elevator Spar Assembly · Piper PA-31, PA-31-300, PA-31-325 and 2 more. Effective Jul 23, 1999
- [AD 99-06-01](https://openairdocs.org/ad/99-06-01): Horizontal Stabilizer Rear Spar · Piper PA-31, PA-31-300, PA-31-325 and 2 more. Effective Apr 20, 1999
- [AD 98-14-03](https://openairdocs.org/ad/98-14-03): Transponders · Cessna 172, 172A, 172B and 230 more. Effective Aug 16, 1998
- [AD 98-09-25](https://openairdocs.org/ad/98-09-25): Lower Spar Splice Plate · Piper PA-31, PA-31-300, PA-31-325 and 1 more. Effective Jun 15, 1998
- [AD 98-08-18](https://openairdocs.org/ad/98-08-18): Elevator Bungee Spring · Piper PA-31, PA-31-300, PA-31-325 and 2 more. Effective May 26, 1998
- [AD 97-07-03](https://openairdocs.org/ad/97-07-03): Nose Wheel Assembly · Piper PA-31, PA-31-300, PA-31-325 and 2 more. Effective May 15, 1997
- [AD 96-24-13](https://openairdocs.org/ad/96-24-13): Landing Gear Selector Cable · Piper PA-31, PA-31-325, PA-31-350 and 2 more. Effective Jan 17, 1997
- [AD 96-21-11](https://openairdocs.org/ad/96-21-11): Main Landing Gear Actuator Reinforcement Bracket · Piper PA-31, PA-31-300, PA-31-325 and 7 more. Effective Dec 16, 1996
- [AD 96-21-04](https://openairdocs.org/ad/96-21-04): Hydraulic Hose Inspection · Piper PA-23, PA-23-160, PA-23-235 and 13 more. Effective Dec 10, 1996
- [AD 96-21-03](https://openairdocs.org/ad/96-21-03): Aileron Spar Crack Inspection · Piper PA-31, PA-31-300, PA-31-325 and 11 more. Effective Dec 10, 1996
- [AD 96-10-15](https://openairdocs.org/ad/96-10-15): Wing Attachments WS 147.5 Inspection · Piper PA-31, PA-31-300, PA-31-325 and 1 more. Effective Jun 27, 1996
- [AD 96-10-14](https://openairdocs.org/ad/96-10-14): Main Landing Gear Sidebraces Inspection · Piper PA-31, PA-31-300, PA-31-325 and 5 more. Effective Jun 27, 1996
- [AD 93-24-02 R1](https://openairdocs.org/ad/93-24-02-R1): Elevator Control Tube Assembly · Piper PA-31, PA-31-300, PA-31-325 and 7 more. Effective Feb 15, 1994
- [AD 93-23-13](https://openairdocs.org/ad/93-23-13): Engine Baffle Seals · Piper PA-31, PA-31-300, PA-31-325 and 1 more. Effective Jan 21, 1994
- [AD 92-27-05](https://openairdocs.org/ad/92-27-05): Aileron Control System · Piper PA-31, PA-31-300, PA-31-325 and 7 more. Effective Jan 29, 1993
- [AD 87-21-01](https://openairdocs.org/ad/87-21-01): Fuel Filler Openings · Aerostar PA-60-600 (Aerostar 600), PA-60-601 (Aerostar 601), PA-60-601P (Aerostar 601P) and 14 more. Effective Nov 2, 1987
- [AD 85-08-05](https://openairdocs.org/ad/85-08-05): Strut Housing Inspection · Piper PA-31, PA-31-300, PA-31-325 and 6 more. Effective May 15, 1985
- [AD 82-27-13 R2](https://openairdocs.org/ad/82-27-13-R2): Flap Extension System · Piper PA-31, PA-31-300, PA-31-325 and 4 more. Effective Aug 18, 1983
- [AD 81-15-03](https://openairdocs.org/ad/81-15-03): Engine Inlet Air Filters · Replace existing engine induction air filter (Brackett Aero Filters STC SA693CE or SA71GL). Effective Jul 20, 1981
- [AD 80-18-10](https://openairdocs.org/ad/80-18-10): Fuel Selector Valves · Piper PA-23, PA-23-160, PA-23-235 and 8 more. Effective Sep 8, 1980
- [AD 80-17-06](https://openairdocs.org/ad/80-17-06): Placards · Piper PA-31, PA-31-325 and PA-31-350. Effective Aug 13, 1980
- [AD 80-17-02](https://openairdocs.org/ad/80-17-02): Elevator Balance Weights · Piper PA-31, PA-31-325 and PA-31-350. Effective Aug 8, 1980
- [AD 79-20-07](https://openairdocs.org/ad/79-20-07): Lighter Circuit Breaker · Piper PA-31, PA-31-325 and PA-31-350. Effective Oct 2, 1979
- [AD 79-14-02](https://openairdocs.org/ad/79-14-02): Control Wheel Shaft Stud · Piper PA-31, PA-31-300, PA-31-325 and 4 more. Effective Jul 6, 1979
- [AD 79-12-02](https://openairdocs.org/ad/79-12-02): Elevator Surface Travel · Piper PA-31, PA-31-300, PA-31-325 and 4 more. Effective Jul 2, 1979
- [AD 78-25-03](https://openairdocs.org/ad/78-25-03): Hose Assemblies · Piper PA-23-250, PA-28R-180, PA-28R-200 and 11 more. Effective Jan 15, 1979
- [AD 78-05-06](https://openairdocs.org/ad/78-05-06): Flexible Fuel Cells · Cessna 180, 182, 185 and 98 more. Effective Jun 30, 1978
- [AD 78-08-10](https://openairdocs.org/ad/78-08-10): Fuel Selector Lever · Piper PA-31 and PA-31-325. Effective Apr 25, 1978
- [AD 77-24-01](https://openairdocs.org/ad/77-24-01): Stabilizers and Fins · Piper PA-31, PA-31-325 and PA-31-350. Effective Apr 17, 1978
- [AD 78-05-05](https://openairdocs.org/ad/78-05-05): Cabin Door Latch · Piper PA-31, PA-31-300, PA-31-325 and 1 more. Effective Mar 8, 1978
- [AD 78-01-02](https://openairdocs.org/ad/78-01-02): Elevator Bungee · Piper PA-31, PA-31-325 and PA-31-350. Effective Jan 3, 1978
- [AD 77-08-02](https://openairdocs.org/ad/77-08-02): Electrical Short · Piper PA-31, PA-31-300, PA-31-325 and 3 more. Effective Nov 15, 1977
- [AD 77-19-06](https://openairdocs.org/ad/77-19-06): Aileron Cables · Piper PA-31, PA-31-300, PA-31-325 and 1 more. Effective Sep 27, 1977
- [AD 77-14-14](https://openairdocs.org/ad/77-14-14): Skin Deformation And Loose Or Missing Rivets · Piper PA-31, PA-31-325 and PA-31-350. Effective Jul 19, 1977
- [AD 77-12-02](https://openairdocs.org/ad/77-12-02): Elevator Balance Weights · Piper PA-31 and PA-31-300 with STC SA986SW. Effective Jun 10, 1977

### Matched by engine (Lycoming TI0-540 series)

- [AD 2026-04-11](https://openairdocs.org/ad/2026-04-11): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 605 more. Effective Apr 8, 2026
- [AD 2022-16-03](https://openairdocs.org/ad/2022-16-03): Engine (RECIPROCATING) · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-F and 236 more. Effective Aug 15, 2022
- [AD 2017-16-11](https://openairdocs.org/ad/2017-16-11): Reciprocating Engine Power Section · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-360-B1G6 and 93 more. Effective Aug 15, 2017
- [AD 2017-11-10](https://openairdocs.org/ad/2017-11-10): Engine Exhaust System · Lycoming Engines TIO-540-AJ1A. Effective Jun 28, 2017
- [AD 2015-19-07](https://openairdocs.org/ad/2015-19-07): Fuel injector fuel lines · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1B and 187 more. Effective Nov 3, 2015
- [AD 2015-10-06](https://openairdocs.org/ad/2015-10-06): Engine exhaust pipes · Lycoming Engines TIO-540-AJ1A. Effective Jul 2, 2015
- [AD 2013-21-02](https://openairdocs.org/ad/2013-21-02): Turbochargers · Continental Motors LTSIO-360-RB, TSIO-360-MB, TSIO-360-RB and 2 more. Effective Nov 13, 2013
- [AD 2012-19-01](https://openairdocs.org/ad/2012-19-01): Crankshafts · Lycoming Engines AEIO-360-A1A, AEIO-360-A1B, AEIO-360-A1B6 and 321 more. Effective Oct 24, 2012
- [AD 71-13-01 R1](https://openairdocs.org/ad/71-13-01-R1): Rescinding an airworthiness directive · Lycoming Engines TIO-540-A1A, TIO-540-A1B, TIO-540-A1C and 13 more. Effective Mar 8, 2012
- [AD 2012-03-06](https://openairdocs.org/ad/2012-03-06): Fuel servo diaphragm · Continental Motors 6-260-A, 6-285-A, 6-285-B and 482 more. Effective Feb 24, 2012
- [AD 2011-13-03](https://openairdocs.org/ad/2011-13-03): Turbocharger Turbine · Lycoming Engines LTO-360-E1A6D, O-540-L3C5D, TIGO-541-E1A and 20 more. Effective Jul 13, 2011
- [AD 2010-07-08](https://openairdocs.org/ad/2010-07-08): Turbochargers · Kelly Aerospace Energy Systems HIO-360-E1AD, HIO-360-E1BD, HIO-360-F1AD and 137 more. Effective Apr 19, 2010
- [AD 2009-26-12](https://openairdocs.org/ad/2009-26-12): Cylinder assemblies · Engine Components Reciprocating Engine Cylinder Assemblies, AEIO-320-D1B, AEIO-320-D2B and 264 more. Effective Feb 4, 2010
- [AD 2009-02-03](https://openairdocs.org/ad/2009-02-03): Fuel injection servos · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 261 more. Effective Feb 9, 2009
- [AD 2008-08-17](https://openairdocs.org/ad/2008-08-17): Turbocharger turbine housing flange and the exhaust tube flange · Teledyne Continental Motors TSIOL-550-A 'Liquid-Cooled' engines (RAM Aircraft Limited Partnership STC SA7633SW or SA7633SW-D). Effective May 6, 2008
- [AD 2006-12-07](https://openairdocs.org/ad/2006-12-07): ECi cylinder assemblies · Aerostar AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 386 more. Effective Jul 11, 2006
- [AD 2006-10-21](https://openairdocs.org/ad/2006-10-21): ECi connecting rods · Engine Components Reciprocating Engine Connecting Rods, AEIO-360-B1B, AEIO-360-B1D and 171 more. Effective Jun 22, 2006
- [AD 2005-19-11](https://openairdocs.org/ad/2005-19-11): Crankshafts · Lycoming Engines AEIO-360-A1B6, AEIO-360-A1E6, AEIO-540-D4A5 and 59 more. Effective Oct 21, 2005
- [AD 2005-12-06](https://openairdocs.org/ad/2005-12-06): Riveted-impulse coupling assemblies and snap-ring coupling assemblies · Lycoming Engines AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 154 more. Effective Jul 19, 2005
- [AD 2004-10-14](https://openairdocs.org/ad/2004-10-14): Crankshaft gear · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 642 more. Effective Jun 25, 2004
- [AD 2004-05-24](https://openairdocs.org/ad/2004-05-24): Zinc-plated Crankshaft Gear Retaining Bolts · Lycoming Engines AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 161 more. Effective Mar 30, 2004
- [AD 2003-14-03](https://openairdocs.org/ad/2003-14-03): Rotary fuel pumps · Lycoming Engines AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 262 more. Effective Aug 14, 2003
- [AD 2002-19-03](https://openairdocs.org/ad/2002-19-03): Crankshaft · Lycoming Engines IO-540-A1A5, IO-540-AA1A5, IO-540-AA1B5 and 81 more. Effective Sep 20, 2002
- [AD 2002-12-07](https://openairdocs.org/ad/2002-12-07): Oil Filter Converter Plate Gasket or the Converter Plate Kit · Lycoming Engines HIO-360-E1AD, HIO-360-E1BD, HIO-360-F1AD and 95 more. Effective Jul 3, 2002
- [AD 98-17-11](https://openairdocs.org/ad/98-17-11): Crankshafts · Continental Motors A-65-3, A-65-8, A75-8 and 90 more. Effective Oct 19, 1998
- [AD 97-15-11](https://openairdocs.org/ad/97-15-11): Cylinder kits · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 538 more. Effective Aug 12, 1997
- [AD 97-01-04](https://openairdocs.org/ad/97-01-04): Cylinder assemblies · Lycoming Engines IO-540-M1B5D, LTIO-540-F2BD, LTIO-540-J2B and 10 more. Effective Apr 22, 1997
- [AD 91-21-01 R1](https://openairdocs.org/ad/91-21-01-R1): Exhaust System Flanges · Lycoming Engines TIO-540-S1AD. Effective Jun 27, 1996
- [AD 95-26-02](https://openairdocs.org/ad/95-26-02): Aviation Gasoline · Lycoming Engines IO-320-B1A, IO-320-B1B, IO-320-B1C and 182 more. Effective Jan 24, 1996
- [AD 95-07-01](https://openairdocs.org/ad/95-07-01): Connecting Rod Bolt · Lycoming Engines AEIO-360-A1E, AEIO-360-B1G6, AEIO-360-H1A and 177 more. Effective Apr 12, 1995
- [AD 92-12-05](https://openairdocs.org/ad/92-12-05): Piston Pins · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 532 more. Effective Jul 10, 1992
- [AD 91-10-04](https://openairdocs.org/ad/91-10-04): Exhaust Transition Flange Bolts · Lycoming Engines TIO-540-AE2A. Effective May 21, 1991
- [AD 91-08-07](https://openairdocs.org/ad/91-08-07): Fuel Pump · Lycoming Engines TIO-360-A1A, TIO-360-A1B, TIO-360-A3B6 and 51 more. Effective May 6, 1991
- [AD 89-15-10](https://openairdocs.org/ad/89-15-10): Nozzle Vent Manifold · Lycoming Engines TIO-540-AE2A. Effective Nov 30, 1989
- [AD 87-10-06 R1](https://openairdocs.org/ad/87-10-06-R1): Rocker Arm Assembly · Lycoming Engines IO-360-B4, IVO-360-A1A, O-340-A1A and 243 more. Effective Sep 1, 1989
- [AD 84-19-03 R1](https://openairdocs.org/ad/84-19-03-R1): Cylinder Assemblies · Lycoming Engines LTIO-540-V2AD and TIO-540-V2AD. Effective Sep 20, 1984
- [AD 83-22-04](https://openairdocs.org/ad/83-22-04): Injector Fuel Diaphragm Stem · Lycoming Engines AEIO-540-L1B5D, IO-540-AA1A5, IO-540-G1B5 and 30 more. Effective Nov 4, 1983
- [AD 81-12-06 R1](https://openairdocs.org/ad/81-12-06-R1): Magnetos · Bendix Magnetos, LTIO-540-J2BD and TIO-540-J2BD. Effective Nov 12, 1981
- [AD 80-17-10](https://openairdocs.org/ad/80-17-10): Transition Wastegate Assembly · Lycoming Engines TIO-540-S1AD. Effective Aug 18, 1980
- [AD 79-04-05](https://openairdocs.org/ad/79-04-05): Regulator Diaphragm Stem Assembly · Lycoming Engines AEIO-320-D1B, AEIO-320-E1A, AEIO-320-E1B and 215 more. Effective Sep 26, 1979
- [AD 79-12-07](https://openairdocs.org/ad/79-12-07): Magnetos · Bendix Magnetos, TIO-540-F2BD, TIO-540-N2BD and 3 more. Effective Jun 19, 1979
- [AD 78-23-10](https://openairdocs.org/ad/78-23-10): Center Body Bellows Seal Assembly · Lycoming Engines AEIO-320-D1B, AEIO-320-E1A, AEIO-320-E1B and 218 more. Effective Nov 7, 1978
- [AD 73-23-01](https://openairdocs.org/ad/73-23-01): Piston Pin Assembly · Lycoming Engines AIO-360-A1A, AIO-360-A1B, AIO-360-A2A and 215 more. Effective Jan 13, 1977
- [AD 75-09-15](https://openairdocs.org/ad/75-09-15): Fuel Starvation To The Engine · Lycoming Engines AIO-320-A1A, AIO-320-A1B, AIO-320-A2A and 130 more. Effective Apr 30, 1975
- [AD 73-10-02](https://openairdocs.org/ad/73-10-02): Bendix Fuel Injectors · Bendix Fuel Injectors, AIO-320-A1A, AIO-320-A1B and 88 more. Effective May 16, 1973
- [AD 66-06-03](https://openairdocs.org/ad/66-06-03): Connecting Rod Assemblies · Lycoming Engines GO-435-C2 (O-435-17), GO-435-C2A, GO-435-C2A2 and 317 more. Effective Jan 16, 1969

### Historical (superseded or no longer in force)

- [AD 2009-13-06](https://openairdocs.org/ad/2009-13-06) (historical): Nose baggage door · Piper PA-23, PA-23-160, PA-23-235 and 16 more. Effective Jul 24, 2009
- [AD 96-12-12](https://openairdocs.org/ad/96-12-12) (historical): Fuselage Station Bulkhead · Piper PA-31, PA-31-300, PA-31-325 and 1 more. Effective Jul 16, 1996
- [AD 82-16-05 R1](https://openairdocs.org/ad/82-16-05-R1) (historical): Turbocharger Tailpipe Installation · Piper PA-31, PA-31-325 and PA-31-350. Effective Apr 11, 1986
- [AD 80-26-05](https://openairdocs.org/ad/80-26-05) (historical): Main Landing Gear Door Hinges · Piper Aircraft, Inc., The New PA-31, PA-31-300, PA-31-325 and 4 more. Effective Dec 19, 1980
- [AD 70-26-06](https://openairdocs.org/ad/70-26-06) (historical): Cracks in Elevator and Rudder Spar · Piper PA-31 and PA-31-300. Effective Dec 29, 1970
- [AD 2024-21-02](https://openairdocs.org/ad/2024-21-02) (historical): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 548 more. Effective Dec 5, 2024
- [AD 2012-24-09](https://openairdocs.org/ad/2012-24-09) (historical): Turbocharger turbine wheel · Continental Motors TSIO-360-MB, TSIO-360-RB, TSIO-360-SB and 1 more. Effective Dec 20, 2012
- [AD 2011-26-04](https://openairdocs.org/ad/2011-26-04) (historical): Externally mounted fuel injector fuel lines · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1B and 186 more. Effective Jan 25, 2012
- [AD 2011-15-10](https://openairdocs.org/ad/2011-15-10) (historical): Fuel servos · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 256 more. Effective Aug 16, 2011
- [AD 2008-19-05](https://openairdocs.org/ad/2008-19-05) (historical): Parallel Valve'' reciprocating engines · Engine Components Reciprocating Engine Cylinder Assemblies, AEIO-320-D1B, AEIO-320-D2B and 262 more. Effective Oct 20, 2008
- [AD 2008-14-07](https://openairdocs.org/ad/2008-14-07) (historical): Externally mounted fuel injector fuel lines · Textron Lycoming, AVCO AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1B and 185 more. Effective Aug 14, 2008
- [AD 2008-08-14](https://openairdocs.org/ad/2008-08-14) (historical): Fuel injection servo plugs · Superior Air Parts AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 242 more. Effective Apr 29, 2008
- [AD 2008-06-51](https://openairdocs.org/ad/2008-06-51) (historical): Fuel injection servo plugs · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 235 more
- [AD 2006-20-09](https://openairdocs.org/ad/2006-20-09) (historical): Certain crankshafts replacing · Lycoming Engines AEIO-360-A1B6, AEIO-360-A1E6, AEIO-540-D4A5 and 82 more. Effective Nov 3, 2006
- [AD 2005-26-10](https://openairdocs.org/ad/2005-26-10) (historical): ECi cylinder assemblies. · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 413 more. Effective Jan 31, 2006
- [AD 2002-26-01](https://openairdocs.org/ad/2002-26-01) (historical): Fuel injector fuel lines · Textron Lycoming, AVCO IGO-480-A1B6, IGO-540-B1A, IGO-540-B1C and 178 more. Effective Jan 31, 2003
- [AD 2002-23-06](https://openairdocs.org/ad/2002-23-06) (historical): Crankshaft gear retaining bolts · Textron Lycoming, AVCO AEIO-540, AEIO-540-D4A5, AEIO-540-D4B5 and 46 more. Effective Nov 19, 2002
- [AD 2002-20-51](https://openairdocs.org/ad/2002-20-51) (historical): Crankshaft gear retaining bolts · Textron Lycoming, AVCO AEIO-540, IO-540 Series (all), LTIO-540-F2BD and 39 more
- [AD 2002-17-53](https://openairdocs.org/ad/2002-17-53) (historical): Crankshaft · Lycoming Engines LTIO-540-F2BD, LTIO-540-J2B, LTIO-540-J2BD and 36 more
- [AD 2002-04-51](https://openairdocs.org/ad/2002-04-51) (historical): Crankshaft · Lycoming Engines LTIO-540-F2BD, LTIO-540-J2B, LTIO-540-J2BD and 8 more
- [AD 98-18-12](https://openairdocs.org/ad/98-18-12) (historical): Fuel Pump · Textron Lycoming, AVCO AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 249 more. Effective Sep 28, 1998
- [AD 93-05-22](https://openairdocs.org/ad/93-05-22) (historical): Fuel Injector Fuel Lines · Lycoming Engines TIO-540-S1AD. Effective May 11, 1993
- [AD 92-12-10](https://openairdocs.org/ad/92-12-10) (historical): Lycoming Engines TIO-540-S1AD. Effective Jun 5, 1992
- [AD 71-13-01](https://openairdocs.org/ad/71-13-01) (historical): Fuel Injector Manifold To Nozzle Tube Assemblies · Lycoming Engines TIO-540-A1A, TIO-540-A1B, TIO-540-A1C and 3 more. Effective Jun 22, 1971

All 137: https://openairdocs.org/aircraft/N16SC/ads.md

## Information bulletins (advisory) (16 in force)

- [SAIB CE-14-07](https://openairdocs.org/saib/CE-14-07): WING SPAR  Main Spar Lower Cap Cracks. Issued Dec 12, 2013
- [SAIB CE-08-11](https://openairdocs.org/saib/CE-08-11): Landing Gear. Issued Jan 9, 2008
- [SAIB CE-06-22](https://openairdocs.org/saib/CE-06-22): . Issued Jan 20, 2006
- [SAIB CE-03-35](https://openairdocs.org/saib/CE-03-35): . Issued Apr 16, 2003
- [SAIB ACE-98-44](https://openairdocs.org/saib/ACE-98-44): . Issued Aug 26, 1998
- [SAIB ACE-98-01](https://openairdocs.org/saib/ACE-98-01): . Issued Oct 17, 1997
- [SAIB ACE-96-16](https://openairdocs.org/saib/ACE-96-16): . Issued Dec 24, 1996
- [SAIB NE-19-08](https://openairdocs.org/saib/NE-19-08): Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders. Issued May 2, 2019
- [SAIB NE-08-32R1](https://openairdocs.org/saib/NE-08-32R1): Propeller Governor  Idler Gear Shaft Set Screw. Issued May 13, 2016
- [SAIB NE-14-13](https://openairdocs.org/saib/NE-14-13): Reciprocating Engine - Cylinder Mounting Studs. Issued Mar 24, 2014
- [SAIB NE-08-26R3](https://openairdocs.org/saib/NE-08-26R3): Magneto/Distributor. Issued Mar 31, 2011
- [SAIB NE-09-04](https://openairdocs.org/saib/NE-09-04): Fuel Control/Reciprocating Engines. Issued Jan 10, 2009
- [SAIB NE-06-32R1](https://openairdocs.org/saib/NE-06-32R1): Reciprocating Engine - Crankshaft. Issued Sep 10, 2008
- [SAIB NE-03-18](https://openairdocs.org/saib/NE-03-18): . Issued Jan 22, 2003
- [SAIB NE-03-12](https://openairdocs.org/saib/NE-03-12): . Issued Dec 30, 2002
- [SAIB NE-01-37](https://openairdocs.org/saib/NE-01-37): . Issued Aug 16, 2001
- [SAIB NE-08-26R1](https://openairdocs.org/saib/NE-08-26R1) (historical): Dual Magnetos. Issued Jul 8, 2008
- [SAIB NE-08-32](https://openairdocs.org/saib/NE-08-32) (historical): Propeller Governor Set Screw. Issued Jul 3, 2008

## NTSB investigations (2)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ANC25LA117](https://openairdocs.org/ntsb/ANC25LA117), Oct 1, 2025: Piper PA-31 (N16SC), Kotlik, AK, substantial damage. Probable cause: The pilot’s failure to extend the landing gear before landing.
- [NTSB LAX93LA109](https://openairdocs.org/ntsb/LAX93LA109), Feb 1, 1993: Piper PA-31 (N16SC), Columbia, CA, substantial damage. Probable cause: THE PILOT'S FAILURE TO MAINTAIN A PROPER GLIDEPATH WHILE ON SHORT FINAL APPROACH. A FACTOR IN THE ACCIDENT WAS THE DARK NIGHT LIGHTING CONDITIONS WHICH MAY HAVE AFFECTED THE PILOT'S PERCEPTUAL…

## FAA accident and incident reports (2)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20250930014159A](https://openairdocs.org/incident/20250930014159A), Sep 30, 2025: Piper PA-31 (N16SC), Kotlik, AK, Substantial damage. Pilot reported they got distracted by rain/weather on the downwind when performing their flow, missed the step of lowering the landing gear and then missed the…
- [Accident 19930131001319A](https://openairdocs.org/incident/19930131001319A), Jan 31, 1993: Piper PA31310 (N16SC), Columbia, CA, Substantial damage. On final right wing struck a tree. Landed safely. Was too low on approach.

## Service difficulty reports (1)

As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR 2006FA0000969](https://openairdocs.org/sdr/2006FA0000969), Sep 27, 2006: SHUTOFF VALVE. LEAKING. DURING ANNUAL INSPECTION FOUND FUEL LEAKING AROUND DIAPHRAGM JOINT. PART MADE BY DURING FIRST QUARTER OF 2001. PN A23D04, 7.5 PSI, 24 VOLT. (K)

## STCs that may be installed (OpenAirDocs) (292, first 50)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the airframe (Piper PA-31)

- [STC SA01800SE](https://openairdocs.org/stc/SA01800SE): Fabrication and installation of new or replacement of existing instrument panel lights dimmer control. TCW Technologies, LLC
- [STC SA01861SE](https://openairdocs.org/stc/SA01861SE): Fabrication and installation of Landing Light Controller. TCW Technologies, LLC
- [STC SA01844WI](https://openairdocs.org/stc/SA01844WI): Installation of Garmin GFC 600 Automatic Flight Control System. Garmin International Inc
- [STC SA12428CH](https://openairdocs.org/stc/SA12428CH): Installation of the Lycoming Engines Electronic Ignition System (EIS). Lycoming Engines, An Operating Division of AVCO Corporation
- [STC SA02279AT](https://openairdocs.org/stc/SA02279AT): Installation of a Boom Beam bulb, starter, and ballast. Whelen Aerospace Technologies
- [STC SA04837NY](https://openairdocs.org/stc/SA04837NY): Installation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lights. AeroLED's Holdings, LLC
- [STC SA02019SE-D](https://openairdocs.org/stc/SA02019SE-D): Installation of Garmin Model GTN 625/635/650; 725/750 Navigation System. Garmin International Inc
- [STC SA01147WI](https://openairdocs.org/stc/SA01147WI): Installation of Concorde FLA or VRSLA series batteries in Piper Light Airplanes. Concorde Battery Corporation
- [STC SA800EA](https://openairdocs.org/stc/SA800EA): Installation of Whelen Anti-Collision, Position, or Anti-Collision/Position Light System, and applicable associated power supplies. Whelen Aerospace Technologies
- [STC SA02511SE](https://openairdocs.org/stc/SA02511SE): Installation of replacement fuel quantity indicator sending unit(s). CiES Inc
- [STC SA02738CH](https://openairdocs.org/stc/SA02738CH): Installation of L-3 Communications Avionics Systems. Acron Aviation Inc
- [STC SA04046CH PAGE 2](https://openairdocs.org/stc/SA04046CH%20PAGE%202): Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500). Acron Aviation Inc
- [STC SA02386AK](https://openairdocs.org/stc/SA02386AK): Replacement of existing landing and/or taxi light reflector and bulbs with Light Emitting Diode (LED) lighting systems. AeroLED's Holding LLC
- [STC SA02658SE](https://openairdocs.org/stc/SA02658SE): Installation of Garmin GI 275 Multi-Function Display System. Garmin International Inc
- [STC SA02571SE](https://openairdocs.org/stc/SA02571SE): Installation of Garmin G500/G600 TXi Integrated Avionics System (Primary Flight Display, Multi-Function Display, and Engine Indicating System Display). Garmin International Inc
- [STC SA02532AT](https://openairdocs.org/stc/SA02532AT): Installation of subject Michelin tires on appropriate aircraft. For Michelin 5, 6, 8, and 10-inch rim diameter tires on General Aviation Aircraft. Michelin North America Inc
- [STC SA01435LA](https://openairdocs.org/stc/SA01435LA): Installation of engines modified with Firewall Forward Technologies LLC modified camshaft. Centri-Lube Technologies LLC
- [STC SA00756DE](https://openairdocs.org/stc/SA00756DE): Installation of Automatic Dependent Surveillance Broadcast (ADS-B) Out Equipment using a Trig Avionics TT22 Transponder and an approved Global Positioning System (GPS) Position Sensor. Peregrine
- [STC SA563GL](https://openairdocs.org/stc/SA563GL): Installation of Cleveland conversion kit, P/N 199-100. Kaman Corporation Aircraft Wheel and Brake LLC
- [STC SA01967WI](https://openairdocs.org/stc/SA01967WI): Use of GAMI G100UL High Octane Unleaded Avgas. General Aviation Modifications Inc
- [STC SA02444AK](https://openairdocs.org/stc/SA02444AK): Approval of the L-3 Communications NGT 9000/9000R ADS-B system installed. ADS-B Technologies LLC
- [STC SA09856AC](https://openairdocs.org/stc/SA09856AC): Installation of BendixKing Aerowave 100 In-flight Data Link System for non-essential, non-required aircraft Cabin Systems & Equipments. Honeywell International Inc (Bendix King)
- [STC SA11174SC PAGE 2](https://openairdocs.org/stc/SA11174SC%20PAGE%202): Installation of BendixKing by Honeywell KSN 770 and KSN 765 WAAS LPV approach capable nav/comm systems. Honeywell International Inc (Bendix King)
- [STC SA02426AK](https://openairdocs.org/stc/SA02426AK): Approval of the FreeFlight FDL-978-TX ADS-B system installed. FreeFlight Systems
- [STC SA04083CH](https://openairdocs.org/stc/SA04083CH): Installation of universal bracket and a sight/viewing hole in the front baggage compartment. Certex Aviation LLC
- [STC SA10236SC](https://openairdocs.org/stc/SA10236SC): Installation of a GDC 31 Roll Steering Converter. DAC International Inc
- [STC SA09759DS](https://openairdocs.org/stc/SA09759DS): Installation of an S-TEC 01326 Digital Flight Control System (DFCS). S-TEC Corporation
- [STC SA02268CH](https://openairdocs.org/stc/SA02268CH): Installation of Airwolf Filter Corp. Air Oil Separator. Airwolf Filter Corporation
- [STC SA1187CE](https://openairdocs.org/stc/SA1187CE): Installation of King Model KCS 55A pictorial navigation (compass) system with optional KA 52 autopilot adapter. Honeywell International Inc
- [STC SA1529CE-D](https://openairdocs.org/stc/SA1529CE-D): Installation of King KAS 297 altitude selector option. Honeywell International Inc
- [STC SA01452CH](https://openairdocs.org/stc/SA01452CH): Installation of an air ambulance conversion kit. Med-Pac Inc
- [STC SA01714WI](https://openairdocs.org/stc/SA01714WI): Installation of a Garmin transponders: (a) GTX 330/330D/33/33D with ADS-B Out functionality; (b) GTX 335/335R/345/345R with ADS-B Out and In functionality; or (c) GTX 335R/345R with ADS-B Out functionality in select airplanes installed with G950/G1000 systems. Garmin International Inc
- [STC SA04032CH](https://openairdocs.org/stc/SA04032CH): Install rocker switch assemblies. Electroair Acquisition Corporation
- [STC SA2124WE](https://openairdocs.org/stc/SA2124WE): Installation of air conditioning system. Air Comm Corporation
- [STC SA00344BO PAGE 2](https://openairdocs.org/stc/SA00344BO%20PAGE%202): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies
- [STC SA615EA](https://openairdocs.org/stc/SA615EA): Installation of a Whelen Anti-Collision Strobe Light System as replacement for originally installed anti-collision lights. Whelen Aerospace Technologies
- [STC SA00528SE](https://openairdocs.org/stc/SA00528SE): Installation of emergency medical stretcher and base, oxygen, and electrical systems. LifePort LLC
- [STC SA02303NY](https://openairdocs.org/stc/SA02303NY): Installation of a Single or Dual Port Fuselage Camera Hole Cutout. Infinion Certification Engineering
- [STC SA1666GL](https://openairdocs.org/stc/SA1666GL): Install air ambulance conversion. Spectrum Aeromed LLC dba Spectrum Aeromed
- [STC SA00744DE](https://openairdocs.org/stc/SA00744DE): Installation of the Automatic Dependent Surveillance Broadcast (ADS-B) Out Equipment using a Trig Avionics TT31 Transponder and an approved position sensor. Peregrine
- [STC SA00765DE](https://openairdocs.org/stc/SA00765DE): Installation of Automatic Dependent Surveillance Broadcast (ADS-B) Out functionality using the BendixKing KT74 Transponder and qualified position sensor. Peregrine
- [STC SA04165NY](https://openairdocs.org/stc/SA04165NY): Installation of Latitude Technologies Skynode S200 Satcom system must be performed. Latitude Technologies Corporation
- [STC SA02153LA-D PAGE 2](https://openairdocs.org/stc/SA02153LA-D%20PAGE%202): Installation of Garmin G600 Primary Flight Display (PFD) and Multifunction Display (MFD) System. Garmin International Inc
- [STC SA00013SE](https://openairdocs.org/stc/SA00013SE): Installation of vortex generators, stall fences, and strakes. BLR Aerospace LLC
- [STC SA00037SE](https://openairdocs.org/stc/SA00037SE): Installation of vortex generator(s). BLR Aerospace LLC
- [STC SA00047SE](https://openairdocs.org/stc/SA00047SE): Vortex generators manufactured and installed. BLR Aerospace LLC
- [STC SA5954NM](https://openairdocs.org/stc/SA5954NM): Vortex generators manufactured. BLR Aerospace LLC
- [STC SA5967NM](https://openairdocs.org/stc/SA5967NM): Vortex generators manufactured and installed. BLR Aerospace LLC
- [STC SA02118AK](https://openairdocs.org/stc/SA02118AK): Installation of damage protection plates to the inboard, lower side of the flaps. Hageland Aviation Services, Inc
- [STC SA02503AK](https://openairdocs.org/stc/SA02503AK): Installation of AMSAFE State of the Art Restraint System (SOARS) inflatable restraints. AMSAFE Inc

All 292: https://openairdocs.org/aircraft/N16SC/stcs.md

## Related

- Other Piper PA-31 aircraft: https://openairdocs.org/model/piper-pa-31/aircraft.md
- The Lycoming TI0-540 series engine: https://openairdocs.org/engine/lycoming-ti0-540-series.md

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.