# N18531: 1937 Porterfield CP-40, registration cancelled 1939-04-04

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: April 4, 1939
- Status when cancelled: Valid registration
- Airframe: [Porterfield CP-40](https://openairdocs.org/model/porterfield-cp-40) (registry code 6480110)
- Serial number: 511
- Year built: 1937
- Type of aircraft: Fixed wing single engine
- Certificate issued: March 25, 1939
- Mode S code: A1561A
- Owner when cancelled: [Godbey Ralph& Hirsch Richard](https://openairdocs.org/faa-owner/GODBEY%20RALPH%26%20HIRSCH%20RICHARD)
- Location: [Cape Girardeau, MO](https://openairdocs.org/faa-place/MO/Cape%20Girardeau)
- Owner type: Partnership
- The mark today: https://openairdocs.org/aircraft/N18531
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=18531
- Page: https://openairdocs.org/deregistered/N18531-1939-04-04

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-40: https://openairdocs.org/model/porterfield-cp-40.md

## Other aircraft with N18531

- [Registered now](https://openairdocs.org/aircraft/N18531): Cessna 150L, S/N 15073920, built 1972

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