# NTSB ANC70FAG17: Hiller Acft UH12E, N5337V, Wasilla, AK, May 13, 1970

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: May 13, 1970
- Place: Wasilla, AK · WASILLA, AK
- Location: 61.5785° N, 149.4763° W: Placed by OpenAirDocs: center of Wasilla, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=61.5785&lon=-149.4763&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report May 10, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 121471
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC70FAG17
- Page: https://openairdocs.org/ntsb/ANC70FAG17

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4608  70/5/13    WASILLA,ALAS        HILLER ACFT UH12E   CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 45, 25674
        TIME - 0840                    N5337V              PX-  0  0  1  FERRY                     TOTAL HOURS, 1023 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          ANCHORAGE,ALAS              FAIRBANKS,ALAS
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: MAIN ROTOR GEAR BOX
           MISCELLANEOUS - FOREIGN MATERIAL AFFECTING NORMAL OPERATIONS
           MISCELLANEOUS ACTS,CONDITIONS - LACK OF LUBRICATION-SPECIFIC PART,NOT SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - OVERHEATED
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           PILOT IN COMMAND - MISJUDGED SPEED AND ALTITUDE
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- OIL-OUT FITTING OF 1ST STAGE PLANETARY SYS CONTAINED LARGE PIECES OF WOOD SHAVINGS.TRANS FAILED.
```

## Aircraft

- Registration: N5337V (not matched to a registry record)
- Reported make and model: HILLER ACFT UH12E
- Category: Helicopter
- Engines: reciprocating
- Damage: 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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