# N750A: Sikorsky S-55, registration cancelled 1977-07-18

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 18, 1977
- Status when cancelled: Valid registration
- Airframe: [Sikorsky S-55](https://openairdocs.org/model/sikorsky-s-55) (registry code 8141602)
- Data sheets: [TCDS 1H4](https://openairdocs.org/tcds/1H4) (OpenAirDocs)
- Serial number: 55939
- Type of aircraft: Rotorcraft
- Certificate issued: May 13, 1976
- Mode S code: AA1A09
- Owner when cancelled: [Helitec Inc](https://openairdocs.org/faa-owner/HELITEC%20INC)
- Location: [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa)
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N750A
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=750A
- Page: https://openairdocs.org/deregistered/N750A-1977-07-18

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-55: https://openairdocs.org/model/sikorsky-s-55.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 FTW75DRD18](https://openairdocs.org/ntsb/FTW75DRD18), Dec 2, 1974: Sikorsky S-55 (N750A), Gulf Of Mexico (Gulf of Mexico), substantial damage

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 19741202038319A](https://openairdocs.org/incident/19741202038319A), Dec 2, 1974: Skrsky S55 (N750A), Gulf Of Mexico, LA, Substantial damage. Nr 5 eng cylndr exhst rkr bx crckd. Emerg lndg made on bcksd of wave in 8 to 10 ft sea. Float equip.

## Other aircraft with N750A

- [Registered now](https://openairdocs.org/aircraft/N750A): Austin John L STOL CH750, S/N 75-7688, built 2012

---
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.