# N908CH: 1977 Sikorsky S-61N, registration cancelled 2022-08-04

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: August 4, 2022
- Status when cancelled: Valid registration
- Airframe: [Sikorsky S-61N](https://openairdocs.org/model/sikorsky-s-61n) (registry code 8142104)
- Engine: [GE CT58-140-2](https://openairdocs.org/engine/ge-ct58-140-2) (registry code 30129)
- Data sheets: [TCDS 1H15](https://openairdocs.org/tcds/1H15), [TCDS 1E3](https://openairdocs.org/tcds/1E3) (OpenAirDocs)
- Serial number: 61776
- Year built: 1977
- Type of aircraft: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Standard, transport
- Airworthiness date: September 3, 2016
- Certificate issued: January 19, 2018
- Last registry action: October 29, 2020
- Mode S code: AC8D1E
- Owner when cancelled: [Heligroup Fire LLC](https://openairdocs.org/faa-owner/HELIGROUP%20FIRE%20LLC)
- Location: [Missoula, MT](https://openairdocs.org/faa-place/MT/Missoula)
- Owner type: LLC
- Owner's area on the map: 46.9040° N, 113.9193° W: Placed by OpenAirDocs at the center of ZIP code 59802, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N908CH
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=908CH
- Page: https://openairdocs.org/deregistered/N908CH-2022-08-04

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-61N: https://openairdocs.org/model/sikorsky-s-61n.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 DCA20LA100](https://openairdocs.org/ntsb/DCA20LA100), Apr 20, 2020: Sikorsky S61 (N908CH), Camp Dwyer, Afghanistan, substantial damage. Probable cause: Fatigue cracking of the auxiliary servo cylinder’s pedal damper check valve housing and its bolts, which caused the sudden and uncommanded movement of the helicopter’s left pedal and a subsequent…

## 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 20200420022249A](https://openairdocs.org/incident/20200420022249A), Apr 20, 2020: Sikorsky S-61N (N908CH), Camp Dwyer, Substantial damage. On 20 April, 2020, at approximately 0800 local time, a Sikorsky S-61N, N908CH, experienced a loss of control in flight and rolled on its side during an…

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