# N4021Z: not currently registered

- Registered now: No (not in the FAA registry file). The mark may be reserved or free to assign
- Earlier aircraft: 3
- Last cancelled: June 5, 2021
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4021Z
- Page: https://openairdocs.org/aircraft/N4021Z

## Aircraft that carried 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 1997-02-06](https://openairdocs.org/deregistered/N4021Z-1997-02-06): Ayres S2R-T34, S/N T34028. Owner: [Davis Perry L](https://openairdocs.org/faa-owner/DAVIS%20PERRY%20L), [Moses Lake, WA](https://openairdocs.org/faa-place/WA/Moses%20Lake)
- [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)

## NTSB investigations on N4021Z (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 on N4021Z (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.

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