# N21970: 1939 Porterfield CP-50, registration cancelled 1940-12-27

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: December 27, 1940
- Status when cancelled: Valid registration
- Airframe: [Porterfield CP-50](https://openairdocs.org/model/porterfield-cp-50) (registry code 6480114)
- Serial number: 556
- Year built: 1939
- Type of aircraft: Fixed wing single engine
- Certificate issued: August 15, 1939
- Mode S code: A1DE57
- Owner when cancelled: [Cooper Harry C](https://openairdocs.org/faa-owner/COOPER%20HARRY%20C)
- Location: [Chambers, NE](https://openairdocs.org/faa-place/NE/Chambers)
- Owner type: Individual
- The mark today: https://openairdocs.org/aircraft/N21970
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=21970
- Page: https://openairdocs.org/deregistered/N21970-1940-12-27

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 Porterfield CP-50: https://openairdocs.org/model/porterfield-cp-50.md

## Other aircraft with N21970

- [Registered now](https://openairdocs.org/aircraft/N21970): Beech-Parks BEECH-PARKS D-45, S/N BG-197
- [Cancelled 1981-08-19](https://openairdocs.org/deregistered/N21970-1981-08-19): Cessna A185F, S/N 18503073, built 1976. Exported to Canada. Owner: [St Cloud Aviation Inc](https://openairdocs.org/faa-owner/ST%20CLOUD%20AVIATION%20INC), [St Cloud, MN](https://openairdocs.org/faa-place/MN/St%20Cloud)

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