# N637: Sikorsky HSS-1, registration cancelled 1960-08-10

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: August 10, 1960
- Exported to: Japan
- Status when cancelled: Valid registration
- Airframe: [Sikorsky HSS-1](https://openairdocs.org/model/sikorsky-hss-1) (registry code 8141820)
- Serial number: 581143
- Type of aircraft: Rotorcraft
- Certificate issued: January 21, 1960
- Mode S code: A857BC
- Owner when cancelled: [United Aircraft Corp](https://openairdocs.org/faa-owner/UNITED%20AIRCRAFT%20CORP)
- Location: [Stratford, CT](https://openairdocs.org/faa-place/CT/Stratford)
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N637
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=637
- Page: https://openairdocs.org/deregistered/N637-1960-08-10

From the FAA registry file of November 3, 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 HSS-1: https://openairdocs.org/model/sikorsky-hss-1.md

## Other aircraft with N637

- [Registered now](https://openairdocs.org/aircraft/N637): Aviat A-1B, S/N 2117, built 2000
- [Cancelled 1993-12-15](https://openairdocs.org/deregistered/N637-1993-12-15): Taylor FTX 01, S/N FTX01. Triennial form not returned. Owner: [Taylor Francis F](https://openairdocs.org/faa-owner/TAYLOR%20FRANCIS%20F), [Fort Dodge, IA](https://openairdocs.org/faa-place/IA/Fort%20Dodge)
- [Cancelled 1935-11-26](https://openairdocs.org/deregistered/N637-1935-11-26): Waco 9, S/N 382. Owner: [Bauer Alfred](https://openairdocs.org/faa-owner/BAUER%20ALFRED), [Neenah, WI](https://openairdocs.org/faa-place/WI/Neenah)

---
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.