# N4927E: Sikorsky S-51, registration cancelled 2012-12-18

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: December 18, 2012
- Status when cancelled: Registration expired, pending cancellation
- 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: 51214
- Type of aircraft: Rotorcraft
- Engine type: Reciprocating
- Airworthiness: Standard
- Airworthiness date: March 24, 1961
- Certificate issued: June 16, 1981
- Last registry action: August 7, 1996
- Mode S code: A61AD8
- Owner when cancelled: [Petkow Louis H](https://openairdocs.org/faa-owner/PETKOW%20LOUIS%20H)
- Location: [San Pedro, CA](https://openairdocs.org/faa-place/CA/San%20Pedro)
- Owner type: Individual
- Owner's area on the map: 33.7359° N, 118.2923° W: Placed by OpenAirDocs: center of San Pedro, CA, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4927E
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4927E
- Page: https://openairdocs.org/deregistered/N4927E-2012-12-18

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

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