# N56921: Boeing A75N1, registration cancelled 1973-06-25

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 25, 1973
- Status when cancelled: Valid registration
- Airframe: [Boeing A75N1](https://openairdocs.org/model/boeing-a75n1) (registry code 1380165)
- Data sheets: [TCDS A-743](https://openairdocs.org/tcds/A-743) (OpenAirDocs)
- Serial number: 75-2138
- Type of aircraft: Fixed wing single engine
- Certificate issued: April 20, 1971
- Mode S code: A74B11
- Owner when cancelled: [Farm Air Inc](https://openairdocs.org/faa-owner/FARM%20AIR%20INC)
- Location: [Sacramento, CA](https://openairdocs.org/faa-place/CA/Sacramento)
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N56921
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=56921
- Page: https://openairdocs.org/deregistered/N56921-1973-06-25

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 Boeing A75N1: https://openairdocs.org/model/boeing-a75n1.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 UNK64X1392](https://openairdocs.org/ntsb/UNK64X1392), Apr 20, 1964: Boeing A75N1 (N56921), Nelson, CA, substantial damage

## Other aircraft with N56921

- [Cancelled 2020-01-06](https://openairdocs.org/deregistered/N56921-2020-01-06): Hallam Delbert W SKYE RYDER, S/N 96-1543-2, built 1996. Registration expired, pending cancellation. Owner: [Hallam Delbert W](https://openairdocs.org/faa-owner/HALLAM%20DELBERT%20W), [Evans, WA](https://openairdocs.org/faa-place/WA/Evans)
- [Cancelled 1991-09-20](https://openairdocs.org/deregistered/N56921-1991-09-20): Beech F33A, S/N CE1553. Exported to South Africa. Owner: [Specialized Aircraft Services Inc](https://openairdocs.org/faa-owner/SPECIALIZED%20AIRCRAFT%20SERVICES%20INC), [Wichita, KS](https://openairdocs.org/faa-place/KS/Wichita)
- [Cancelled 1982-05-04](https://openairdocs.org/deregistered/N56921-1982-05-04): Enstrom Helicopter 280C, S/N 1186. Owner: [Dick Sawyer Intl Inc](https://openairdocs.org/faa-owner/DICK%20SAWYER%20INTL%20INC), [Yukon, OK](https://openairdocs.org/faa-place/OK/Yukon)

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