# N4321Z: not currently registered

- Registered now: No (not in the FAA registry file). The mark may be reserved or free to assign
- Earlier aircraft: 2
- Last cancelled: October 7, 2025
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4321Z
- Page: https://openairdocs.org/aircraft/N4321Z

## Aircraft that carried N4321Z

- [Cancelled 2025-10-07](https://openairdocs.org/deregistered/N4321Z-2025-10-07): Beech 95-B55 (T42A), S/N TC-1463, built 1972. Owner: [Cedocs](https://openairdocs.org/faa-owner/CEDOCS), [Boulder, CO](https://openairdocs.org/faa-place/CO/Boulder)
- [Cancelled 1969-12-23](https://openairdocs.org/deregistered/N4321Z-1969-12-23): Piper PA-18-150, S/N 18-8635. Exported to Canada. Owner: [Galpin George](https://openairdocs.org/faa-owner/GALPIN%20GEORGE), [Stanford, CA](https://openairdocs.org/faa-place/CA/Stanford)

## NTSB investigations on N4321Z (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 CEN25FA178](https://openairdocs.org/ntsb/CEN25FA178), May 17, 2025: Beech 95-B55 (T42A) (N4321Z), Broomfield, CO, destroyed, 2 fatal, investigation ongoing

## FAA accident and incident reports on N4321Z (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 20250517006049A](https://openairdocs.org/incident/20250517006049A), May 17, 2025: Beech 95-B55 (T42A) (N4321Z), Boulder, CO, Destroyed, 2 fatal. On may 17, 2025, a Beechcraft, model 95-55 (T42A) departed kbjc Rocky Mountain Metropolitan Airport. Shortly after takeoff, the pilot radioed that they had a…
- [Incident 19941018039369I](https://openairdocs.org/incident/19941018039369I), Oct 18, 1994: Beech 95B55 (N4321Z), Denver, CO, Minor damage. Turned off onto taxiway. Right main gear collapsed.

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