# NTSB DEN81FTC26: Hughes 369D, N1106G, Cokeville, WY, September 16, 1981

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: September 16, 1981
- Place: Cokeville, WY · COKEVILLE, WY
- Location: 42.0792° N, 110.9519° W: Placed by OpenAirDocs: center of Cokeville, WY, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.0792&lon=-110.9519&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 4 minor
- Status: Completed, report March 4, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 123099
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN81FTC26
- Page: https://openairdocs.org/ntsb/DEN81FTC26

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3345  81/9/16    COKEVILLE,WY        HUGHES 369D         CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, FL.INSTR.,
        TIME - 1930                    N1106G              PX-  0  0  3  TEST                      AGE 32, 3160 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            750 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          COKEVILLE,WY                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            LANDING: POWER-ON LANDING
           ROLL OVER                                                LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - MISCELLANEOUS: POWERPLANT FAILURE FOR UNDETERMINED REASONS
        FACTOR(S)
           WEATHER - HIGH DENSITY ALTITUDE
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      65
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
           45                                                       10
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- D/A APRX 10300FT.
```

## Aircraft

- Registration: [N1106G](https://openairdocs.org/aircraft/N1106G), registered now, S/N 510955D, built 1981 (OpenAirDocs)
- Reported make and model: HUGHES 369D
- Registry model: [Hughes Helicopters HUGHES 369D](https://openairdocs.org/model/hughes-helicopters-hughes-369d) (registry code 4470706) (OpenAirDocs)
- Registry engine: [Allison 250 SER 250HP](https://openairdocs.org/engine/allison-250-ser-250hp) (registry code 03002, turbo-shaft) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- Damage: Substantial damage

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19810916059959A](https://openairdocs.org/incident/19810916059959A), Sep 16, 1981: Hughes 369D, Cokeville, WY, Substantial damage. Engine out at low altitude. RPM decay resulted in hard landing and rollover. No engine malfunctions found.

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.

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