# N3306: 1972 Benson Gyroplane B8M, registration cancelled 1974-12-31

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: December 31, 1974
- Status when cancelled: Valid registration
- Airframe: [Benson Gyroplane B8M](https://openairdocs.org/model/benson-gyroplane-b8m) (registry code 05636B7)
- Serial number: 05-5486
- Year built: 1972
- Type of aircraft: Rotorcraft
- Certificate issued: June 21, 1974
- Mode S code: A398F9
- Owner when cancelled: [Keyes John W](https://openairdocs.org/faa-owner/KEYES%20JOHN%20W)
- Location: [Eugene, OR](https://openairdocs.org/faa-place/OR/Eugene)
- Owner type: Individual
- The mark today: https://openairdocs.org/aircraft/N3306
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=3306
- Page: https://openairdocs.org/deregistered/N3306-1974-12-31

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 Benson Gyroplane B8M: https://openairdocs.org/model/benson-gyroplane-b8m.md

## NTSB investigations (2)

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 SEA75FYI15](https://openairdocs.org/ntsb/SEA75FYI15), Oct 26, 1974: Bensen B8ME (N3306), Eugene, OR, destroyed, 1 fatal
- [NTSB SEA75DYI06](https://openairdocs.org/ntsb/SEA75DYI06), Aug 17, 1974: Bensen B-8M (N3306), Eugene, OR, substantial damage

## Other aircraft with N3306

- [Registered now](https://openairdocs.org/aircraft/N3306): Let L 33 SOLO, S/N 930106, built 1993

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