# N21967: 1939 Porterfield CP-50, registration cancelled 1942-07-11

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 11, 1942
- Status when cancelled: Valid registration
- Airframe: [Porterfield CP-50](https://openairdocs.org/model/porterfield-cp-50) (registry code 6480114)
- Serial number: 553
- Year built: 1939
- Type of aircraft: Fixed wing single engine
- Certificate issued: April 23, 1942
- Mode S code: A1DE3B
- Owner when cancelled: [Bytner Henry J](https://openairdocs.org/faa-owner/BYTNER%20HENRY%20J)
- Location: [Albany, NY](https://openairdocs.org/faa-place/NY/Albany)
- Owner type: Individual
- The mark today: https://openairdocs.org/aircraft/N21967
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=21967
- Page: https://openairdocs.org/deregistered/N21967-1942-07-11

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 N21967

- [Registered now](https://openairdocs.org/aircraft/N21967): Boeing A75N1(PT17), S/N 75-3235, built 1942
- [Cancelled 1989-01-04](https://openairdocs.org/deregistered/N21967-1989-01-04): Cessna 150L, S/N 15074575. Triennial form not returned

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