# N521: Butler BLACK HAWK, registration cancelled 1947-06-10

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 10, 1947
- Status when cancelled: Valid registration
- Airframe: [Butler BLACK HAWK](https://openairdocs.org/model/butler-black-hawk) (registry code 1720102)
- Data sheets: [TCDS ATC 135](https://openairdocs.org/tcds/ATC%20135) (OpenAirDocs)
- Serial number: 103
- Type of aircraft: Fixed wing single engine
- Certificate issued: July 10, 1942
- Mode S code: A68CA4
- Owner when cancelled: [Greer Dorris James](https://openairdocs.org/faa-owner/GREER%20DORRIS%20JAMES)
- Location: [Vicksburg, MS](https://openairdocs.org/faa-place/MS/Vicksburg)
- Owner type: Individual
- The mark today: https://openairdocs.org/aircraft/N521
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=521
- Page: https://openairdocs.org/deregistered/N521-1947-06-10

From the FAA registry file of November 4, 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 Butler BLACK HAWK: https://openairdocs.org/model/butler-black-hawk.md

## Other aircraft with N521

- [Registered now](https://openairdocs.org/aircraft/N521): Airbus Helicopters AS350B3, S/N 9942, built 2026
- [Cancelled 2012-08-10](https://openairdocs.org/deregistered/N521-2012-08-10): Adams William U DRAGONFLY, S/N G0326007. Sale reported, pending cancellation. Owner: [Xxx, OK](https://openairdocs.org/faa-place/OK/Xxx)
- [Cancelled 1963-10-29](https://openairdocs.org/deregistered/N521-1963-10-29): Beech D35, S/N D3665. Owner: [Tripp R Richard](https://openairdocs.org/faa-owner/TRIPP%20R%20RICHARD), [Lonpoc, CA](https://openairdocs.org/faa-place/CA/Lonpoc)

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