# NTSB DEN80DTC28: Hiller UH-12E, N5389V, Greybull, WY, August 8, 1980

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 8, 1980
- Place: Greybull, WY · GREYBULL, WY
- Location: 44.4865° N, 108.0557° W: Placed by OpenAirDocs: center of Greybull, WY, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.4865&lon=-108.0557&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report October 2, 1980
- Report: Brief approved by the director
- NTSB case key (mKey): 129596
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN80DTC28
- Page: https://openairdocs.org/ntsb/DEN80DTC28

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1982   80/8/8  NR.GREYBULL,WY        HILLER UH-12E       CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 32, 1798
        TIME - 1630                    N5389V              PX-  0  0  2  AIR TAXI-PASSG            TOTAL HOURS, 55 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          WORLAND,WY                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  LANDING: POWER-ON LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - SELECTED UNSUITABLE TERRAIN
        FACTOR(S)
           WEATHER - DOWNDRAFT,UPDRAFTS
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, IN PERSON
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     THUNDERSTORM
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      64
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          310                                                       16
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- ATTMPTD LNDG TO LEDGE ON LEE SIDE OF RIDGE.WIND GUSTS TO 24KTS.
```

## Aircraft

- Registration: [N5389V](https://openairdocs.org/deregistered/N5389V-2012-09-20), registration cancelled 2012-09-20, S/N 2111, built 1961 (OpenAirDocs)
- Reported make and model: HILLER UH-12E
- Registry model: [Hiller UH-12E](https://openairdocs.org/model/hiller-uh-12e) (registry code 4360122) (OpenAirDocs)
- Registry engine: [Lycoming VO-540 series](https://openairdocs.org/engine/lycoming-vo-540-series) (registry code 41534, 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 19800808036679A](https://openairdocs.org/incident/19800808036679A), Aug 8, 1980: Hiller UH12E, Greybull, WY, Substantial damage. Became caught in downdraft trying to landing on a ledge. Tail rotor hit canyon wall. Possible settling with power.

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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