# NTSB ANC76DAG05: Hiller Acft UH-12E, N9792C, Yakataga, AK, July 2, 1975

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 2, 1975
- Place: Yakataga, AK · YAKATAGA, AK
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 20, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 149486
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC76DAG05
- Page: https://openairdocs.org/ntsb/ANC76DAG05

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1883   75/7/2  NR.YAKATAGA,AK        HILLER ACFT UH-12E  CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 29, 2500
        TIME - 1620                    N9792C              PX-  0  0  0  CONSTRUCTION              TOTAL HOURS, 140 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - YAKATAGA
        DEPARTURE POINT             INTENDED DESTINATION
         YAKATAGA,AK                  ICY BAY,AK
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: TAIL ROTOR                      IN FLIGHT: NORMAL CRUISE
        PROBABLE CAUSE(S)
           PERSONNEL - MISCELLANEOUS-PERSONNEL: OTHER
           INSTRUMENTS/EQUIPMENT AND ACCESSORIES - MISCELLANEOUS EQUIPMENT: PICK-UP EQUIPMENT
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY SECURED
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: TAIL ROTOR DRIVE SHAFT ASSEMBLY
           MISCELLANEOUS - FOREIGN OBJECT DAMAGE
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - AIRCRAFT CAME TO REST IN WATER
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- SLING LOAD PARTED IN FLT. PC OF LUMBER SWUNG INTO T/R,SEVERED DRIVE SHAFT. CRASHED OFF SHORE.
```

## Aircraft

- Registration: [N9792C](https://openairdocs.org/deregistered/N9792C-2013-08-21), registration cancelled 2013-08-21, S/N 2277, built 1963 (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
- Airport: Yakataga

## 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 19750702021169A](https://openairdocs.org/incident/19750702021169A), Jul 2, 1975: Hiller UH12E, Yakataga, AK, Substantial damage. Sling load parted in flt. Pc of lumber swung into t/r,severed drive shaft. Crashed off shore.

## Other investigations on N9792C (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 LAX03CA284](https://openairdocs.org/ntsb/LAX03CA284), Sep 9, 2003: Hiller UH12E (N9792C), Kekaha, HI, substantial damage. Probable cause: the pilot's failure to maintain clearance with the wires due to an inadequate visual lookout.

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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