# N123SM: not currently registered

- Registered now: No (not in the FAA registry file). The mark may be reserved or free to assign
- Earlier aircraft: 1
- Last cancelled: April 29, 2026
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=123SM
- Page: https://openairdocs.org/aircraft/N123SM

## Aircraft that carried N123SM

- [Cancelled 2026-04-29](https://openairdocs.org/deregistered/N123SM-2026-04-29): Cessna 421, S/N 421-0193, built 1968. Owner: [Fernair LLC](https://openairdocs.org/faa-owner/FERNAIR%20LLC), [Houston, TX](https://openairdocs.org/faa-place/TX/Houston)

## NTSB investigations on N123SM (3)

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 CEN23LA267](https://openairdocs.org/ntsb/CEN23LA267), Jun 24, 2023: Cessna 421 (N123SM), Rockport, TX, substantial damage. Probable cause: The failure of the left engine starter adapter gear, which resulted in catastrophic damage to other engine components, and the subsequent loss of engine power.
- [NTSB ATL83LA120](https://openairdocs.org/ntsb/ATL83LA120), Feb 24, 1983: Cessna 421 (N123SM), Dayton, TN, substantial damage
- [NTSB IAD79FA046](https://openairdocs.org/ntsb/IAD79FA046), May 4, 1979: Cessna 421 (N123SM), Sevierville, TN, substantial damage

## FAA accident and incident reports on N123SM (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 20230624010359A](https://openairdocs.org/incident/20230624010359A), Jun 24, 2023: Cessna 421 (N123SM), Rockport, TX, Substantial damage. [privacy data omitted] Serial number 421-0193 a Cessna 421 departed corpus christi (kcrp) with a destination to houston (k''') on a part 91 [privacy data…
- [Accident 19830224005789A](https://openairdocs.org/incident/19830224005789A), Feb 24, 1983: Cessna 421 (N123SM), Dayton, TN, Substantial damage. Misdialed RNAV approach. Struck trees on final approach segment still in clouds. Remained airborne. Landed safe.
- [Accident 19790504015089A](https://openairdocs.org/incident/19790504015089A), May 4, 1979: Cessna 421 (N123SM), Sevierville, TN, Substantial damage. Pilot undershot runway. When landing gear hit edge of runway, the right main gear collapsed.

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