# N4957S: 1951 Sikorsky HRS-1, registration cancelled 2017-11-18

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: November 18, 2017
- Status when cancelled: Revoked, canceled
- Airframe: [Sikorsky HRS-1](https://openairdocs.org/model/sikorsky-hrs-1) (registry code 8141612)
- Engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016)
- Serial number: 127793
- Year built: 1951
- Type of aircraft: Rotorcraft
- Engine type: Reciprocating
- Airworthiness: Restricted, other
- Certificate issued: May 24, 1967
- Last registry action: January 14, 1977
- Mode S code: A62609
- Owner when cancelled: [W S Young Construction Co Inc](https://openairdocs.org/faa-owner/W%20S%20YOUNG%20CONSTRUCTION%20CO%20INC)
- Location: [Ruston, LA](https://openairdocs.org/faa-place/LA/Ruston)
- Owner type: Corporation
- Owner's area on the map: 32.4899° N, 92.6439° W: Placed by OpenAirDocs at the center of ZIP code 71270, within about 8 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4957S
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4957S
- Page: https://openairdocs.org/deregistered/N4957S-2017-11-18

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 Sikorsky HRS-1: https://openairdocs.org/model/sikorsky-hrs-1.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 FTW67A0118](https://openairdocs.org/ntsb/FTW67A0118), Jun 12, 1967: Sikorsky HRS-1 (N4957S), Laplace, LA, substantial damage

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.