# N40ST: 1974 Piper PA-31-350, registration cancelled 2008-10-07

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: October 7, 2008
- Status when cancelled: Triennial form not returned
- Airframe: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (registry code 7103110)
- 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), [TCDS E14EA](https://openairdocs.org/tcds/E14EA) (OpenAirDocs)
- Serial number: 31-7405183
- Year built: 1974
- Type of aircraft: Fixed wing multi engine
- Engine type: Turbo-prop
- Airworthiness: Standard
- Certificate issued: September 12, 2002
- Last registry action: September 16, 2008
- Mode S code: A4ABEA
- Owner when cancelled: [Pioneer Leasing Inc](https://openairdocs.org/faa-owner/PIONEER%20LEASING%20INC)
- Location: [Seattle, WA](https://openairdocs.org/faa-place/WA/Seattle)
- Owner type: Corporation
- Owner's area on the map: 47.4516° N, 122.3530° W: Placed by OpenAirDocs at the center of ZIP code 98166, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N40ST
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=40ST
- Page: https://openairdocs.org/deregistered/N40ST-2008-10-07

From the FAA registry file of October 28, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Piper PA-31-350: https://openairdocs.org/model/piper-pa-31-350.md

## Service difficulty reports (3)

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

- [SDR 96ZZZX6090](https://openairdocs.org/sdr/96ZZZX6090), Nov 20, 1996: REGULATOR. LEAKING. PNEUMATIC REGULATOR LEAKS BADLY AT LOW PRESSURE SIDE. KEEPS PNEUMATIC SYSTEM FROM DEVELOPING PRESSURE.
- [SDR 96ZZZX5647](https://openairdocs.org/sdr/96ZZZX5647), Oct 23, 1996: VERNATHERM. CONE WORN. DURING VALVE INSPECTION IAW LYCOMING SB 518C, EXCESSIVE WEAR ON THE CONE AREA WAS NOTED WHERE CONE CONTACTS SEAT. WEAR MEASURED FROM .06 INCH TO .1 INCH AROUND 
- [SDR 96ZZZX4991](https://openairdocs.org/sdr/96ZZZX4991), Sep 10, 1996: DOOR. OUT OF ADJUST. RIGHT MAIN GEAR FAILED TO RETRACT FULLY AND FELL OUT OF UP POSITION DUE TO BINDING/MISADJUSTMENT OF OUTER DOOR.

## NTSB investigations (1)

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 SEA06FA139](https://openairdocs.org/ntsb/SEA06FA139), Jul 11, 2006: Piper PA-31-350 (N40ST), Easton, WA, destroyed, 1 fatal. Probable cause: The loss of power in both engines for undetermined reasons while in cruise flight, leading to an attempted forced landing. Factors include unfavorable winds at the site of the forced landing, and…

## FAA accident and incident reports (3)

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 20060710013509A](https://openairdocs.org/incident/20060710013509A), Jul 10, 2006: Piper PA31350 (N40ST), Easton, WA, Destroyed, 1 fatal. (-23) Weather was clear with 10 sm visibility. Pilot left geg enroute to bfi with about 300# of freight on board, a light load for a navajo model aircraft. He…
- [Incident 19880302016039I](https://openairdocs.org/incident/19880302016039I), Mar 2, 1988: Piper PA31350 (N40ST), Tulsa, OK. Windshield fogged when engine started. Defroster unable to clear. Limited visibility caused PIC to taxi off runway.
- [Incident 19870727069459I](https://openairdocs.org/incident/19870727069459I), Jul 27, 1987: Piper PA31350 (N40ST), Tulsa, OK. Smoke and sparks from under glare shield as map light wire shorted. Maintenance disconnected wires pulled breaker.

## Other aircraft with N40ST

- [Registered now](https://openairdocs.org/aircraft/N40ST): Towner Miles Allen VANS RV-6A, S/N T106A, built 1997

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