# N20K: Robinson Helicopter R22 BETA, registration cancelled 1990-10-01

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: October 1, 1990
- Status when cancelled: N-number assigned, not yet registered
- Airframe: [Robinson Helicopter R22 BETA](https://openairdocs.org/model/robinson-helicopter-r22-beta) (registry code 7640110)
- Data sheets: [TCDS H10WE](https://openairdocs.org/tcds/H10WE) (OpenAirDocs)
- Serial number: 789
- Type of aircraft: Rotorcraft
- Mode S code: A1908B
- Owner type: Government
- The mark today: https://openairdocs.org/aircraft/N20K
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=20K
- Page: https://openairdocs.org/deregistered/N20K-1990-10-01

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 Robinson Helicopter R22 BETA: https://openairdocs.org/model/robinson-helicopter-r22-beta.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 FTW90GA146](https://openairdocs.org/ntsb/FTW90GA146), Jul 26, 1990: Robinson R22B (N20K), Tahlequah, OK, destroyed, 1 fatal. Probable cause: THE PILOT'S FAILURE TO MAINTAIN ADEQUATE ALTITUDE.

## Other aircraft with N20K

- [Cancelled 2005-10-12](https://openairdocs.org/deregistered/N20K-2005-10-12): Aero Commander 1121B, S/N 144, built 1974. Owner: [White Industries Inc](https://openairdocs.org/faa-owner/WHITE%20INDUSTRIES%20INC), [Bates City, MO](https://openairdocs.org/faa-place/MO/Bates%20City)
- [Cancelled 1976-10-22](https://openairdocs.org/deregistered/N20K-1976-10-22): Urshan UR-1, S/N 1, built 1954. Owner: [Urshan Samuel A](https://openairdocs.org/faa-owner/URSHAN%20SAMUEL%20A), [San Diego, CA](https://openairdocs.org/faa-place/CA/San%20Diego)
- [Cancelled 1937-09-30](https://openairdocs.org/deregistered/N20K-1937-09-30): Savoia Marchetti S-55-P, S/N 10517, built 1929. Owner: [Alaska Airways Inc](https://openairdocs.org/faa-owner/ALASKA%20AIRWAYS%20INC), [Seattle, WA](https://openairdocs.org/faa-place/WA/Seattle)

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