# N5559A: 1947 Sikorsky S-51, registration cancelled 1976-06-22

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 22, 1976
- Status when cancelled: Sale reported
- Airframe: [Sikorsky S-51](https://openairdocs.org/model/sikorsky-s-51) (registry code 8141102)
- Engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008)
- Data sheets: [TCDS H-2](https://openairdocs.org/tcds/H-2) (OpenAirDocs)
- Serial number: 5144
- Year built: 1947
- Type of aircraft: Rotorcraft
- Engine type: Reciprocating
- Airworthiness: Standard
- Last registry action: January 14, 1977
- Mode S code: A71592
- Location: [Oklahoma City, OK](https://openairdocs.org/faa-place/OK/Oklahoma%20City)
- Owner type: Corporation
- Owner's area on the map: 35.4676° N, 97.5164° W: Placed by OpenAirDocs: center of Oklahoma City, OK, within about 14 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N5559A
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=5559A
- Page: https://openairdocs.org/deregistered/N5559A-1976-06-22

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 Sikorsky S-51: https://openairdocs.org/model/sikorsky-s-51.md

## Other aircraft with N5559A

- [Cancelled 2017-07-14](https://openairdocs.org/deregistered/N5559A-2017-07-14): Fisher Michael H T-BIRD II, S/N TB2-001, built 2000. Registration expired, pending cancellation. Owner: [Fisher Michael H](https://openairdocs.org/faa-owner/FISHER%20MICHAEL%20H), [Dover, OH](https://openairdocs.org/faa-place/OH/Dover)

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