# N123SM: 1968 Cessna 421, registration cancelled 2026-04-29

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: April 29, 2026
- Status when cancelled: Valid registration
- Airframe: [Cessna 421](https://openairdocs.org/model/cessna-421) (registry code 2076010)
- Engine: [Continental GTSIO-520-C](https://openairdocs.org/engine/continental-gtsio-520-c) (registry code 17035)
- Data sheets: [TCDS A7CE](https://openairdocs.org/tcds/A7CE), [TCDS E7CE](https://openairdocs.org/tcds/E7CE) (OpenAirDocs)
- Serial number: 421-0193
- Year built: 1968
- Type of aircraft: Fixed wing multi engine
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: December 31, 1968
- Certificate issued: January 2, 2019
- Last registry action: July 7, 2023
- Mode S code: A06073
- Owner when cancelled: [Fernair LLC](https://openairdocs.org/faa-owner/FERNAIR%20LLC)
- Location: [Houston, TX](https://openairdocs.org/faa-place/TX/Houston)
- Owner type: LLC
- Owner's area on the map: 29.8274° N, 95.4261° W: Placed by OpenAirDocs at the center of ZIP code 77018, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N123SM
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=123SM
- Page: https://openairdocs.org/deregistered/N123SM-2026-04-29

From the FAA registry file of November 5, 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 Cessna 421: https://openairdocs.org/model/cessna-421.md

## NTSB investigations (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 (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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