# N4121X: 1968 Aero Commander 100, registration cancelled 1976-06-24

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 24, 1976
- Status when cancelled: Valid registration
- Airframe: [Aero Commander 100](https://openairdocs.org/model/aero-commander-100) (registry code 0140202)
- Serial number: 219
- Year built: 1968
- Type of aircraft: Fixed wing single engine
- Certificate issued: August 27, 1968
- Mode S code: A4DE1F
- Owner when cancelled: [Campaul Aircraft Inc](https://openairdocs.org/faa-owner/CAMPAUL%20AIRCRAFT%20INC)
- Location: [Dallas, TX](https://openairdocs.org/faa-place/TX/Dallas)
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N4121X
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4121X
- Page: https://openairdocs.org/deregistered/N4121X-1976-06-24

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 Aero Commander 100: https://openairdocs.org/model/aero-commander-100.md

## Other aircraft with N4121X

- [Registered now](https://openairdocs.org/aircraft/N4121X): Beech A36, S/N E-651, built 1975

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