# N90FS: 1979 Piper PA-31T

- Status: Valid registration
- Airframe: [Piper PA-31T](https://openairdocs.org/model/piper-pa-31t) (registry code 7103124, 8 seats)
- Engine: [Pratt & Whitney Canada PT6A-60A](https://openairdocs.org/engine/pratt-whitney-canada-pt6a-60a) (registry code 52043)
- Data sheets: [TCDS A8EA](https://openairdocs.org/tcds/A8EA) (Piper Aircraft Inc.), [TCDS E4EA](https://openairdocs.org/tcds/E4EA) (Pratt & Whitney Canada Corp.) (OpenAirDocs)
- Serial number: 31T-8020011
- Year built: 1979
- Type: Fixed wing multi engine
- Engine type: Turbo-prop
- Airworthiness: Standard, normal
- Airworthiness date: November 16, 1979
- Certificate issued: August 12, 2011
- Expires: August 31, 2027
- Mode S code: AC6D61
- Registered owner: [Aircraft Guaranty Corp Trustee](https://openairdocs.org/faa-owner/AIRCRAFT%20GUARANTY%20CORP%20TRUSTEE)
- Location: [Oklahoma City, OK](https://openairdocs.org/faa-place/OK/Oklahoma%20City)
- Owner type: Corporation
- Owner's area on the map: 35.3253° N, 97.5522° W: Placed by OpenAirDocs at the center of ZIP code 73170, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=90FS
- Page: https://openairdocs.org/aircraft/N90FS

From the FAA registry file of October 20, 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.

## ADs that may apply (OpenAirDocs): 45 in force

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

- [AD 2017-02-06](https://openairdocs.org/ad/2017-02-06): Electrical Power/Electrical Power System Wiring · Piper PA-31P-350, PA-31T, PA-31T1 and 2 more. Effective Feb 22, 2017
- [AD 2012-10-09](https://openairdocs.org/ad/2012-10-09): Placards and Markings · Piper PA-31T and PA-31T1. Effective Jun 29, 2012
- [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 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 2005-01-19](https://openairdocs.org/ad/2005-01-19): Mode S transponders · GARMIN International GTX 330D, GTX 330, GTX 33D and 830 more. Effective Feb 23, 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 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 98-25-02](https://openairdocs.org/ad/98-25-02): Top-mounted Antenna · Bell Helicopter Textron Canada 407, 172, 172A and 243 more. Effective Dec 22, 1998
- [AD 98-14-03](https://openairdocs.org/ad/98-14-03): Transponders · Cessna 172, 172A, 172B and 230 more. Effective Aug 16, 1998
- [AD 97-26-12](https://openairdocs.org/ad/97-26-12): AFM - Limitations Section - Power Levers · Piper PA-31T, PA-31T1, PA-31T2 and 4 more. Effective Jan 28, 1998
- [AD 97-16-10](https://openairdocs.org/ad/97-16-10): Filters · Cessna 310R, T310R, 36 and 17 more. Effective Sep 18, 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 96-10-13](https://openairdocs.org/ad/96-10-13): Bulkhead Assembly Inspection · Piper PA-31T, PA-31T1, PA-31T2 and 1 more. Effective Jun 27, 1996
- [AD 94-06-04](https://openairdocs.org/ad/94-06-04): Mask Regulators · Airbus A320-111, A320-211, A320-212 and 19 more. Effective May 23, 1994
- [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 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 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 82-11-04](https://openairdocs.org/ad/82-11-04): Emergency Exit Window Modification · Piper PA-31T, PA-31T1 and PA-31T2. Effective Jun 3, 1982
- [AD 81-23-06](https://openairdocs.org/ad/81-23-06): Flap Track Structure · Piper PA-31P, PA-31T and PA-31T1. Effective Nov 16, 1981
- [AD 81-01-01](https://openairdocs.org/ad/81-01-01): Propeller Deice Relay · Piper PA-31T and PA-31T1. Effective Feb 27, 1981
- [AD 80-25-05](https://openairdocs.org/ad/80-25-05): Voltage Regulator Modification · Piper PA-31T and PA-31T1. Effective Feb 12, 1981
- [AD 80-14-08](https://openairdocs.org/ad/80-14-08): Airplane Flight Manual Revision · Piper PA-31T. Effective Jul 7, 1980
- [AD 80-01-08](https://openairdocs.org/ad/80-01-08): Oil Cooler Inlet Hose Assembly · Piper PA-31T and PA-31T1. Effective Jan 14, 1980
- [AD 79-19-09](https://openairdocs.org/ad/79-19-09): Electroluminescent Panel Inverters · Piper PA-31T and PA-31T1. Effective Sep 25, 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 78-12-06](https://openairdocs.org/ad/78-12-06): Nose Landing Gear Wheel Assembly · Piper PA-31T. Effective May 9, 1979
- [AD 78-02-01](https://openairdocs.org/ad/78-02-01): Main Landing Gear · Piper PA-31T and PA-31T1. Effective May 9, 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 78-13-06](https://openairdocs.org/ad/78-13-06): Main Landing Gear Wheel Assembly · Piper PA-31T. Effective Jun 29, 1978
- [AD 78-08-12](https://openairdocs.org/ad/78-08-12): Flap System Operation · Piper PA-31T. Effective Apr 26, 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 76-18-06](https://openairdocs.org/ad/76-18-06): Elevator Structure · Piper PA-31T. Effective Sep 10, 1976
- [AD 76-04-11](https://openairdocs.org/ad/76-04-11): Loose Bolts · Piper PA-31, PA-31-300, PA-31-325 and 3 more. Effective Mar 5, 1976
- [AD 75-16-02](https://openairdocs.org/ad/75-16-02): Rudder Nose Gear · Piper PA-31P and PA-31T. Effective Jul 29, 1975

### Matched by engine (Pratt & Whitney Canada PT6A-60A)

- [AD 2004-25-18](https://openairdocs.org/ad/2004-25-18): Propeller governor assemblies · Pratt & Whitney Canada PT6A-60A and PT6A-65B. Effective Jan 18, 2005
- [AD 97-04-12](https://openairdocs.org/ad/97-04-12): Compressor Bleed-off Valve · Pratt & Whitney Canada PT6A-11, PT6A-110, PT6A-112 and 52 more. Effective Mar 14, 1997

### 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 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 80-11-06](https://openairdocs.org/ad/80-11-06) (historical): Aircraft Data Plate · Piper PA-31T and PA-31T1. Effective May 28, 1980
- [AD 80-02-15](https://openairdocs.org/ad/80-02-15) (historical): Elevator Butt Rib Cracks · Piper Aircraft, Inc., The New PA-31P, PA-31T and PA-31T1. Effective Jan 29, 1980
- [AD 76-03-01](https://openairdocs.org/ad/76-03-01) (historical): Elevator Trim Tab System · Piper Aircraft, Inc., The New PA-31T. Effective Feb 9, 1976

## Information bulletins (advisory) (6 in force)

- [SAIB CE-17-05](https://openairdocs.org/saib/CE-17-05): Electrical Power/Electrical Power System Wiring. Issued Dec 16, 2016
- [SAIB CE-08-11](https://openairdocs.org/saib/CE-08-11): Landing Gear. Issued Jan 9, 2008
- [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-15-21](https://openairdocs.org/saib/NE-15-21): Fuel Injector Nozzle. Issued Aug 19, 2015
- [SAIB CE-03-24](https://openairdocs.org/saib/CE-03-24): . Issued Feb 19, 2003

## NTSB investigations

None matched to N90FS.

## FAA accident and incident reports

None matched to N90FS.

## Service difficulty reports

None filed for this aircraft.

## Related

- Other Piper PA-31T aircraft: https://openairdocs.org/model/piper-pa-31t/aircraft.md
- STCs for the Piper PA-31T: https://openairdocs.org/model/piper-pa-31t/stcs.md
- The Pratt & Whitney Canada PT6A-60A engine: https://openairdocs.org/engine/pratt-whitney-canada-pt6a-60a.md

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