# NTSB DEN78DTC15: Hughes 269B, N9427F, Douglas, WY, March 3, 1978

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: March 3, 1978
- Place: Douglas, WY · DOUGLAS, WY
- Location: 42.7548° N, 105.3978° W: Placed by OpenAirDocs: center of Douglas, WY, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.7548&lon=-105.3978&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report April 19, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 143244
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN78DTC15
- Page: https://openairdocs.org/ntsb/DEN78DTC15

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0395   78/3/3  NR.DOUGLAS,WY         HUGHES 269B         CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 37, 4206
        TIME - 1640                    N9427F              PX-  0  0  1  HUNTING                   TOTAL HOURS, 1853 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          DON GRANT RANCH,WY          DON GRANT RANCH,WY
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: DIRT BANK                                 LANDING: POWER-ON LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT
           POWERPLANT - ENGINE CONTROLS: THROTTLE-POWER LEVER ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - STUCK
        REMARKS- THROTTLE STUCK IN OPEN POSITION FOR UNKNOWN REASON.PILOT KNEW OF STUCK THROTTLE PRIOR TO FLIGHT.
```

## Aircraft

- Registration: [N9427F](https://openairdocs.org/deregistered/N9427F-2016-05-05), registration cancelled 2016-05-05, S/N 0174, built 1963 (OpenAirDocs)
- Reported make and model: HUGHES 269B
- Registry model: [Hughes 269B](https://openairdocs.org/model/hughes-269b) (registry code 4470502) (OpenAirDocs)
- Registry engine: [Lycoming HIO-360 series](https://openairdocs.org/engine/lycoming-hio-360-series) (registry code 41524, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- 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 19780303004299A](https://openairdocs.org/incident/19780303004299A), Mar 3, 1978: Hughes 269B, Douglas,Wy, WY, Substantial damage. Throttle stuck in open position for unknown reason. Pilot knew of stuk throttle prior to flight.

## Other investigations on N9427F (4)

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 CEN15LA341](https://openairdocs.org/ntsb/CEN15LA341), Aug 5, 2015: Hughes 269B (N9427F), Atkinson, IL, destroyed. Probable cause: The pilot's improper decision to intentionally fly the helicopter at a low altitude and his subsequent failure to maintain clearance from a power line.
- [NTSB CHI86LA236](https://openairdocs.org/ntsb/CHI86LA236), Sep 26, 1986: Hughes 269B (N9427F), Baldwin, WI, substantial damage
- [NTSB SEA71DXM18](https://openairdocs.org/ntsb/SEA71DXM18), Jan 7, 1971: Hughes 269B (N9427F), Atlanta, ID, substantial damage
- [NTSB SEA67A0010](https://openairdocs.org/ntsb/SEA67A0010), Aug 7, 1966: Hughes 269B (N9427F), Eaverton, OR, substantial damage

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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