# N403M: Aero Commander 1121B, registration cancelled 1970-06-17

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 17, 1970
- Status when cancelled: Valid registration
- Airframe: [Aero Commander 1121B](https://openairdocs.org/model/aero-commander-1121b) (registry code 0142010)
- Data sheets: [TCDS A2SW](https://openairdocs.org/tcds/A2SW) (OpenAirDocs)
- Serial number: 132
- Type of aircraft: Fixed wing multi engine
- Certificate issued: April 29, 1969
- Mode S code: A4B8D9
- Owner when cancelled: [Western Leasing Co](https://openairdocs.org/faa-owner/WESTERN%20LEASING%20CO)
- Location: [Van Nuys, CA](https://openairdocs.org/faa-place/CA/Van%20Nuys)
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N403M
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=403M
- Page: https://openairdocs.org/deregistered/N403M-1970-06-17

From the FAA registry file of October 29, 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 Aero Commander 1121B: https://openairdocs.org/model/aero-commander-1121b.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 DEN70A0041](https://openairdocs.org/ntsb/DEN70A0041), Dec 16, 1969: Aero Comdr 1121B (N403M), Salt Lake City, UT, destroyed, 2 fatal

## Other aircraft with N403M

- [Registered now](https://openairdocs.org/aircraft/N403M): Piper PA-31T1, S/N 31T-8004033
- [Cancelled 1934-06-03](https://openairdocs.org/deregistered/N403M-1934-06-03): Stinson SM-2AC, S/N 1128. Owner: [Jenkins Thomas J](https://openairdocs.org/faa-owner/JENKINS%20THOMAS%20J), [Los Angeles, CA](https://openairdocs.org/faa-place/CA/Los%20Angeles)

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