# NTSB ANC76AA123: Hiller Acft UH12EJ, N47078, Sheep Mountain, AK, August 15, 1976

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: August 15, 1976
- Place: Sheep Mountain, AK · SHEEP MOUNTAIN, AK
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report August 25, 1976
- Report: Brief approved by the director
- NTSB case key (mKey): 155085
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC76AA123
- Page: https://openairdocs.org/ntsb/ANC76AA123

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1792  76/8/15    SHEEP MOUNTAIN,AK   HILLER ACFT UH12EJ  CR-  1  0  0  MISCELLANEOUS             COMMERCIAL, AGE 39, 5856
        TIME - 1930                    N47078              PX-  0  0  0  FERRY                     TOTAL HOURS, 82 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          ORANGE HILLS,AK             PALMER,AK                    GULKANA,AK
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: WIRES/POLES                               IN FLIGHT: NORMAL CRUISE
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OBJECTS OR OBSTRUCTIONS
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
        REMARKS- HIT UNMARKED PWR LINES ABT 175FT AGL IN MTN PASS.
```

## Aircraft

- Registration: [N47078](https://openairdocs.org/deregistered/N47078-2013-03-18), registration cancelled 2013-03-18, S/N 1371, built 1962 (OpenAirDocs)
- Reported make and model: HILLER ACFT UH12EJ
- Registry model: [Hiller UH-12D](https://openairdocs.org/model/hiller-uh-12d) (registry code 4360118) (OpenAirDocs)
- Registry engine: [Allison 250 SER 400HP](https://openairdocs.org/engine/allison-250-ser-400hp) (registry code 03013, turbo-shaft) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- Damage: Destroyed

## 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 19760815032739A](https://openairdocs.org/incident/19760815032739A), Aug 15, 1976: Hiller UH12C, Sheep Mountain, AK, Destroyed. Hit unmarked pwr lines abt 175FT AGL in mtn pass.

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.

---
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.