# NTSB SEA75FYA28: Hiller Acft UH-12E, N7755, Hammett, ID, January 20, 1975

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: January 20, 1975
- Place: Hammett, ID · HAMMETT, ID
- Location: 42.9441° N, 115.4655° W: Placed by OpenAirDocs: center of Hammett, ID, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.9441&lon=-115.4655&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report April 18, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 132389
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA75FYA28
- Page: https://openairdocs.org/ntsb/SEA75FYA28

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0381  75/1/20    HAMMETT,ID          HILLER ACFT UH-12E  CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 35, 2625
        TIME - 1400                    N7755               PX-  0  0  1  CTR PASSG-D               TOTAL HOURS, 2000 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          CASTELFORD,ID               HAMMETT,ID
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           COLLISION WITH GROUND/WATER: CONTROLLED                  LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           TERRAIN - ROUGH/UNEVEN
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- INTERNAL FAILURE.LND ON SLOPE.
```

## Aircraft

- Registration: [N7755](https://openairdocs.org/deregistered/N7755-2022-05-09), registration cancelled 2022-05-09, S/N 2349, built 1969 (OpenAirDocs)
- Reported make and model: HILLER ACFT 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 19750120001029A](https://openairdocs.org/incident/19750120001029A), Jan 20, 1975: Hiller UH12E, Hammett, ID, Substantial damage. Internal failure. Lnd on slope.

## Other investigations on N7755 (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 SEA74DVA09](https://openairdocs.org/ntsb/SEA74DVA09), Aug 26, 1973: Hiller UH-12E (N7755), S.Glenns Ferry, ID, 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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