# N5691B: 1979 Enstrom Helicopter 280C, registration cancelled 2017-06-30

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 30, 2017
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Enstrom Helicopter 280C](https://openairdocs.org/model/enstrom-helicopter-280c) (registry code 3300505)
- Engine: [Lycoming HI0-360 series](https://openairdocs.org/engine/lycoming-hi0-360-series) (registry code 41553)
- Data sheets: [TCDS H1CE](https://openairdocs.org/tcds/H1CE), [TCDS 1E10](https://openairdocs.org/tcds/1E10) (OpenAirDocs)
- Serial number: 1180
- Year built: 1979
- Type of aircraft: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Standard, normal
- Airworthiness date: September 7, 1979
- Certificate issued: August 17, 2005
- Last registry action: February 17, 2009
- Mode S code: A74AD6
- Owner when cancelled: [Marpat Aviation LLC](https://openairdocs.org/faa-owner/MARPAT%20AVIATION%20LLC)
- Location: [Switzer, WV](https://openairdocs.org/faa-place/WV/Switzer)
- Owner type: Corporation
- Owner's area on the map: 37.7868° N, 81.9844° W: Placed by OpenAirDocs at the center of ZIP code 25647, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N5691B
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=5691B
- Page: https://openairdocs.org/deregistered/N5691B-2017-06-30

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 Enstrom Helicopter 280C: https://openairdocs.org/model/enstrom-helicopter-280c.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 NYC06LA175](https://openairdocs.org/ntsb/NYC06LA175), Jul 15, 2006: Enstrom 280C (N5691B), Danville, WV, substantial damage. Probable cause: A partial failure of the override clutch assembly. A contributing factor to the accident was the manufacturer's inadequate inspection procedures of the override clutch assembly following a tail rotor…
- [NTSB IAD05LA122](https://openairdocs.org/ntsb/IAD05LA122), Aug 12, 2005: Enstrom 280C (N5691B), Saulsville, WV, substantial damage. Probable cause: The pilot's inadequate remedial action following a loss of control during the landing approach.

## 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 20060715022609A](https://openairdocs.org/incident/20060715022609A), Jul 15, 2006: Enstrm 280C (N5691B), Danville, WV, Substantial damage. (-23) According to his written statement, the pilot said while on a solo cross country flight he heard a "loud snap" and experienced a 5 to 10 degree right…
- [Accident 20050812024459A](https://openairdocs.org/incident/20050812024459A), Aug 12, 2005: Enstrm 280C (N5691B), Saulsville, WV, Minor damage. (-23) Upon landing at a heli-pad at southern west Virginia community college, Saulsville, WV the aircraft began a slow yaw to the right at approximately 40…

## Other aircraft with N5691B

- [Cancelled 1965-05-25](https://openairdocs.org/deregistered/N5691B-1965-05-25): Cessna 182, S/N 33691. Owner: [Scovil W H/Scovil Jean A](https://openairdocs.org/faa-owner/SCOVIL%20W%20H%2FSCOVIL%20JEAN%20A), [Salinas, CA](https://openairdocs.org/faa-place/CA/Salinas)

---
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.