# N9643Z: Bensen Gyrocopter B-7, registration cancelled 1971-01-06

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: January 6, 1971
- Status when cancelled: Valid registration
- Airframe: [Bensen Gyrocopter B-7](https://openairdocs.org/model/bensen-gyrocopter-b-7) (registry code 13006M6)
- Serial number: KC-1
- Type of aircraft: Rotorcraft
- Certificate issued: September 5, 1963
- Mode S code: AD6DDB
- Owner when cancelled: [Cowman Kenneth](https://openairdocs.org/faa-owner/COWMAN%20KENNETH)
- Location: [El Monte, CA](https://openairdocs.org/faa-place/CA/El%20Monte)
- Owner type: Individual
- The mark today: https://openairdocs.org/aircraft/N9643Z
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=9643Z
- Page: https://openairdocs.org/deregistered/N9643Z-1971-01-06

From the FAA registry file of October 29, 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 Bensen Gyrocopter B-7: https://openairdocs.org/model/bensen-gyrocopter-b-7.md

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB LAX66A0004](https://openairdocs.org/ntsb/LAX66A0004-201537), Jul 10, 1965: Benson B7 (N9643Z), Adelanto, CA, substantial damage

## Other aircraft with N9643Z

- [Registered now](https://openairdocs.org/aircraft/N9643Z): Cessna TU206G, S/N U20606594, built 1982

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