# N1172U: Sikorsky H-34A, registration cancelled 1971-03-22

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: March 22, 1971
- Status when cancelled: Valid registration
- Airframe: [Sikorsky H-34A](https://openairdocs.org/model/sikorsky-h-34a) (registry code 8141812)
- Data sheets: [TCDS H4SO](https://openairdocs.org/tcds/H4SO) (OpenAirDocs)
- Serial number: 581122
- Type of aircraft: Rotorcraft
- Certificate issued: October 26, 1970
- Mode S code: A048E5
- 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
- Owner's area on the map: 41.1845° N, 73.1332° W: Placed by OpenAirDocs: center of Stratford, CT, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N1172U
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=1172U
- Page: https://openairdocs.org/deregistered/N1172U-1971-03-22

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 H-34A: https://openairdocs.org/model/sikorsky-h-34a.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 IAD71AI035](https://openairdocs.org/ntsb/IAD71AI035), Jan 22, 1971: Sikorsky S-58E (N1172U), Sandston, VA, substantial damage

## Other aircraft with N1172U

- [Cancelled 2007-10-30](https://openairdocs.org/deregistered/N1172U-2007-10-30): Mooney M20J, S/N 24-1631. Triennial form not returned. Owner: [Niver Winston H](https://openairdocs.org/faa-owner/NIVER%20WINSTON%20H), [Los Angeles, CA](https://openairdocs.org/faa-place/CA/Los%20Angeles)

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