# NTSB OAK75FJA06: Hiller Acft UH-12E, N90474, Kapaau, HI, December 3, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 3, 1974
- Place: Kapaau, HI · KAPAAU, HI
- Location: 20.2346° N, 155.8017° W: Placed by OpenAirDocs: center of Kapaau, HI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=20.2346&lon=-155.8017&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report January 21, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 145072
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK75FJA06
- Page: https://openairdocs.org/ntsb/OAK75FJA06

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4040   74/12/3 NR.KAPAAU,HAWAII      HILLER ACFT UH-12E  CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 27, 3933
        TIME - 0730                    N90474              PX-  0  0  1  AIR TAXI-PASSG            TOTAL HOURS, 1600 IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         KAPAAU,HAWAII                KAMUELA,HAWAII
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           COLLIDED WITH: TREES                                     LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: CLUTCH ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           TERRAIN - HIGH OBSTRUCTIONS
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- CLUTCH FAILED FOR UNDET REASON.LND IN GUAVA TREES.
```

## Aircraft

- Registration: [N90474](https://openairdocs.org/deregistered/N90474-1981-10-16), registration cancelled 1981-10-16, S/N 2365 (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)
- Category: Helicopter
- Engines: reciprocating
- 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 19741203040489A](https://openairdocs.org/incident/19741203040489A), Dec 3, 1974: Hiller UH12C, Kapaau, HI, Substantial damage. Clutch failed for undet reason. Lnd in guava trees.

## Other investigations on N90474 (4)

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 LAX80DJA10](https://openairdocs.org/ntsb/LAX80DJA10), Feb 17, 1980: Hiller 12E (N90474), Kealia Kauai, HI, destroyed
- [NTSB OAK74FJA22](https://openairdocs.org/ntsb/OAK74FJA22), May 17, 1974: Hiller Acft UH-12E (N90474), Ewa Beach, HI, substantial damage
- [NTSB OAK73FJA16](https://openairdocs.org/ntsb/OAK73FJA16), Mar 13, 1973: Hiller Acft UH-12E (N90474), Naalehu, HI, substantial damage
- [NTSB DEN67A0079](https://openairdocs.org/ntsb/DEN67A0079), Jun 10, 1967: Hiller UH-12E (N90474), Lovell, WY, 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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