# N21971: 1939 Porterfield CP-50, registration cancelled 1948-06-23

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 23, 1948
- Status when cancelled: Valid registration
- Airframe: [Porterfield CP-50](https://openairdocs.org/model/porterfield-cp-50) (registry code 6480114)
- Serial number: 557
- Year built: 1939
- Type of aircraft: Fixed wing single engine
- Certificate issued: June 5, 1942
- Mode S code: A1DE58
- Owner when cancelled: [Badger Airways Inc](https://openairdocs.org/faa-owner/BADGER%20AIRWAYS%20INC)
- Location: [Milwaukee, WI](https://openairdocs.org/faa-place/WI/Milwaukee)
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N21971
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=21971
- Page: https://openairdocs.org/deregistered/N21971-1948-06-23

From the FAA registry file of November 3, 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 N21971

- [Registered now](https://openairdocs.org/aircraft/N21971): Cessna T182T, S/N T18208730, built 2007
- [Cancelled 2003-12-15](https://openairdocs.org/deregistered/N21971-2003-12-15): Cessna 150L, S/N 15074579, built 1973. Triennial form not returned. Owner: [Long Kathy S](https://openairdocs.org/faa-owner/LONG%20KATHY%20S), [North Canton, OH](https://openairdocs.org/faa-place/OH/North%20Canton)

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