# N3521S: 1979 Piper PA-31-350, registration cancelled 2017-06-20

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 20, 2017
- Exported to: Canada
- Status when cancelled: Valid registration
- 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: 31-7952107
- Year built: 1979
- Type of aircraft: Fixed wing multi engine
- Engine type: Turbo-prop
- Airworthiness: Standard, normal
- Airworthiness date: April 22, 1979
- Certificate issued: March 9, 1983
- Last registry action: September 13, 2016
- Mode S code: A3EEC7
- Owner when cancelled: [Aero Industries Incorporated](https://openairdocs.org/faa-owner/AERO%20INDUSTRIES%20INCORPORATED)
- Location: [Richmond, VA](https://openairdocs.org/faa-place/VA/Richmond)
- Owner type: Corporation
- Owner's area on the map: 37.5047° N, 77.3209° W: Placed by OpenAirDocs at the center of ZIP code 23250, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N3521S
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=3521S
- Page: https://openairdocs.org/deregistered/N3521S-2017-06-20

From the FAA registry file of October 29, 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 (8)

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

- [SDR BIER9806054](https://openairdocs.org/sdr/BIER9806054), Aug 18, 1998: LINK. DAMAGED. FOUND ELEVATOR BALANCE SPRING FWD LINK HOLE ELONGATED AT POINT SPRING ATTACHES TO LINK.
- [SDR BIER05053](https://openairdocs.org/sdr/BIER05053), Aug 18, 1998: SPAR. CRACKED. DURING INSP IAW PIPER SB998A, FOUND LEFT STAB SPAR CRACKED ON O/B BOTTOM AREA OF SPAR. CRACK ONLY VISIBLE USING BORESCOPE DUE TO LOCATION.
- [SDR BIER9801049](https://openairdocs.org/sdr/BIER9801049), Jan 14, 1998: RING. BROKEN. AT 50 HOUR INSP DURING OIL SUCTION SCREEN INSP, FOUND .125 INCH METAL PIECE, CLOSER INSP REVEALED THAT IT WAS AN OIL RING PART. REMOVED CYL, FOUND OIL CONTROL R
- [SDR BIER970042](https://openairdocs.org/sdr/BIER970042), Mar 3, 1997: SPAR. CRACKED. AT COMPLIANCE WITH PIPER SB 998, FOUND RIGHT ELEVATOR SPAR CRACKED AT OUTBOARD INSPECTION POINT.
- [SDR BIER960035](https://openairdocs.org/sdr/BIER960035), Sep 6, 1996: SEAL. FAILED. PILOT REPORTED PARTIAL POWER LOSS, LATER ATTRIBUTED TO DEAD LEFT MAG. INVESTIGATION REVEALED OIL PASSING BY TURBO CHARGER INNER SEAL AND BEING BLOWN INTO MAG TH
- [SDR BIER960029](https://openairdocs.org/sdr/BIER960029), Jan 4, 1996: ROD SUPPORT. CRACKED. AT UNRELATED MAINTENANCE, FOUND TURBOCHARGER TOP ROD SUPPORT BRACKET BROKEN AT ENGINE. SUBMITTER STATES SUSPECT MISALIGNMENT OF ROD AND SUPPORT AT INSTALLATION.
- [SDR BIER950024](https://openairdocs.org/sdr/BIER950024), Oct 24, 1995: FITTING. CORRODED. FOUND FITTING THAT HOLDS FUEL STRAINER IN SERVO CORRODED AWAY (AT LOWEST POINT OF FITTING WHEN INSTALLED IN SERVO). SUBMITTER STATES: SUSPECT WATER IN SERVO COR
- [SDR BIER950015](https://openairdocs.org/sdr/BIER950015), Jul 27, 1995: MASTER SWITCH. SHORTED. BATTERY WAS DRAINED DOWN TO 22 VOLTS WITH MASTER ELECTRICAL SWITCH IN OFF POSITION. DETERMINED CAUSE WAS MOISTURE BUILD-UP IN SWITCH CAUSING BATTERY DRAIN. COMP

## FAA accident and incident reports (1)

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.

- [Incident 19920519022339I](https://openairdocs.org/incident/19920519022339I), May 19, 1992: Piper PA31350 (N3521S), Roanoke, VA. Oil fluctuations in right engine. Precautionary landing at Roanoke. Found cracks in NR1 cylinder head.

## Other aircraft with N3521S

- [Cancelled 1973-05-08](https://openairdocs.org/deregistered/N3521S-1973-05-08): Cessna 172E, S/N 17250721. Exported to Canada. Owner: [Donald L Bruns](https://openairdocs.org/faa-owner/DONALD%20L%20BRUNS), [Aberdeen, SD](https://openairdocs.org/faa-place/SD/Aberdeen)

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