# N717ST: 1971 Hughes 369HS, registration cancelled 2015-08-04

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: August 4, 2015
- Status when cancelled: Valid registration
- Airframe: [Hughes 369HS](https://openairdocs.org/model/hughes-369hs) (registry code 4470728)
- Engine: [Allison 250 SER 400HP](https://openairdocs.org/engine/allison-250-ser-400hp) (registry code 03013)
- Data sheets: [TCDS H3WE](https://openairdocs.org/tcds/H3WE) (OpenAirDocs)
- Serial number: 350717S
- Year built: 1971
- Type of aircraft: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Restricted, aerial surveying
- Airworthiness date: February 21, 1999
- Certificate issued: August 20, 1999
- Last registry action: August 18, 2014
- Mode S code: A997B0
- Owner when cancelled: [Ohara Helicopters Inc](https://openairdocs.org/faa-owner/OHARA%20HELICOPTERS%20INC)
- Location: Tamuning, GU, Guam
- Physical address: Harmon, GU, Equatorial Guinea
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N717ST
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=717ST
- Page: https://openairdocs.org/deregistered/N717ST-2015-08-04

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 Hughes 369HS: https://openairdocs.org/model/hughes-369hs.md

## NTSB investigations (2)

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 LAX00LA103](https://openairdocs.org/ntsb/LAX00LA103), Feb 14, 2000: Hughes 369HS (N717ST), Pacific Ocean (Pacific Ocean), destroyed. Probable cause: An unknown mechanical malfunction that resulted in a precautionary landing at sea and the subsequent sinking of the helicopter by an ocean swell.
- [NTSB ANC76AA011](https://openairdocs.org/ntsb/ANC76AA011), Jul 21, 1975: Hughes 369HS (N717ST), Deadhorse, AK, substantial damage

## FAA accident and incident reports (2)

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 20000214011339A](https://openairdocs.org/incident/20000214011339A), Feb 14, 2000: Hughes 369HS (N717ST), Papua, No damage. (-23) On 2/14/00 at 1700 hrs local, N717ST made a precautionary landing in international waters of pacific ocean approx 500 miles north of Papua, new guinea.…
- [Accident 19750721034789A](https://openairdocs.org/incident/19750721034789A), Jul 21, 1975: Hughes 369HS (N717ST), Deadhorse, AK, Substantial damage. Improper proc for refueling fm drums.

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