# N4021Z: Ayres S2R-T34, registration cancelled 1997-02-06

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: February 6, 1997
- Status when cancelled: Valid registration
- Airframe: [Ayres S2R-T34](https://openairdocs.org/model/ayres-s2r-t34) (registry code 0970106)
- Serial number: T34028
- Type of aircraft: Fixed wing single engine
- Certificate issued: April 4, 1990
- Last registry action: October 4, 1995
- Mode S code: A4B6A2
- Owner when cancelled: [Davis Perry L](https://openairdocs.org/faa-owner/DAVIS%20PERRY%20L)
- Location: [Moses Lake, WA](https://openairdocs.org/faa-place/WA/Moses%20Lake)
- Owner type: Individual
- Owner's area on the map: 47.1468° N, 119.3158° W: Placed by OpenAirDocs at the center of ZIP code 98837, within about 12 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4021Z
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4021Z
- Page: https://openairdocs.org/deregistered/N4021Z-1997-02-06

From the FAA registry file of November 3, 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 Ayres S2R-T34: https://openairdocs.org/model/ayres-s2r-t34.md

## 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 SEA95LA055](https://openairdocs.org/ntsb/SEA95LA055), Feb 23, 1995: Ayres S2R-T34AG (N4021Z), Moses Lake, WA, substantial damage. Probable cause: THE PILOT-IN-COMMAND'S FAILURE TO MAINTAIN ADEQUATE ALTITUDE ABOVE THE TERRAIN. FACTORS INCLUDE HIS DIVERTED ATTENTION AND ATTEMPTED MANEUVER TO AVOID OBSTRUCTIONS.

## 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 19950223002289A](https://openairdocs.org/incident/19950223002289A), Feb 23, 1995: Ayres S2RT34RESTD (N4021Z), Moses Lake, WA, Substantial damage. Crashed trying to dive under wires surveying a spray field.
- [Incident 19910724044259I](https://openairdocs.org/incident/19910724044259I), Jul 24, 1991: Ayres S2RT34RESTD (N4021Z), Mose Lake, WA, Minor damage. Engine lost power when aircraft pulled up after spray run. Forced landing in field.

## Other aircraft with N4021Z

- [Cancelled 2021-06-05](https://openairdocs.org/deregistered/N4021Z-2021-06-05): Andrew Philip Richardson DBA A55S, S/N 258. Registration expired, pending cancellation. Owner: [Richardson Andrew P](https://openairdocs.org/faa-owner/RICHARDSON%20ANDREW%20P), [Albuquerque, NM](https://openairdocs.org/faa-place/NM/Albuquerque)
- [Cancelled 1970-12-29](https://openairdocs.org/deregistered/N4021Z-1970-12-29): Piper PA-18-150, S/N 18-7973. Owner: [Alder George B](https://openairdocs.org/faa-owner/ALDER%20GEORGE%20B), [Chattanooga, TN](https://openairdocs.org/faa-place/TN/Chattanooga)

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