# N178EP: 1991 Robinson Helicopter R22 MARINER, registration cancelled 2025-12-06

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: December 6, 2025
- Status when cancelled: Sale reported, canceled
- Airframe: [Robinson Helicopter R22 MARINER](https://openairdocs.org/model/robinson-helicopter-r22-mariner) (registry code 7640115)
- Engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508)
- Data sheets: [TCDS H10WE](https://openairdocs.org/tcds/H10WE), [TCDS E-274](https://openairdocs.org/tcds/E-274) (OpenAirDocs)
- Serial number: 1918
- Year built: 1991
- Type of aircraft: Rotorcraft
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: August 23, 1991
- Last registry action: March 5, 2025
- Mode S code: A13757
- Location: [Greeley, CO](https://openairdocs.org/faa-place/CO/Greeley)
- Owner type: Individual
- Owner's area on the map: 40.4447° N, 104.6794° W: Placed by OpenAirDocs at the center of ZIP code 80631, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N178EP
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=178EP
- Page: https://openairdocs.org/deregistered/N178EP-2025-12-06

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 Robinson Helicopter R22 MARINER: https://openairdocs.org/model/robinson-helicopter-r22-mariner.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 ERA25LA046](https://openairdocs.org/ntsb/ERA25LA046), Nov 13, 2024: Robinson Helicopter R22 Mariner (N178EP), Parrottsville, TN, substantial damage. Probable cause: The pilot’s failure to maintain control of the helicopter during a precautionary, off-airport landing to sloping terrain.

## 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 20241113017249A](https://openairdocs.org/incident/20241113017249A), Nov 13, 2024: Robinson Helicopter Company R22 MARINER (N178EP), Limestone, TN, Substantial damage. A student pilot on a solo cross-country flight was looking at navigation log when she realized the aircraft speed was slow. A forward cyclic input was made and…

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