# NTSB OAK73FJA16: Hiller Acft UH-12E, N90474, Naalehu, HI, March 13, 1973

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 13, 1973
- Place: Naalehu, HI · NAALEHU, HI
- Location: 19.0698° N, 155.5751° W: Placed by OpenAirDocs: center of Naalehu, HI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=19.0698&lon=-155.5751&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report May 11, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 170415
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK73FJA16
- Page: https://openairdocs.org/ntsb/OAK73FJA16

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0623  73/3/13    NAALEHU,HAWAII      HILLER ACFT UH-12E  CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 25, 2546
        TIME - 1315                    N90474              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 606 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - KAHUKU
        DEPARTURE POINT             INTENDED DESTINATION
          KAHUKU,HAWAII               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: EN ROUTE TO TREAT CROP
           ROLL OVER                                                LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - FUEL SYSTEM: PUMPS
           MISCELLANEOUS ACTS,CONDITIONS - LEAK/LEAKAGE
           MISCELLANEOUS ACTS,CONDITIONS - FUEL STARVATION
           TERRAIN - ROUGH/UNEVEN
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - UNKNOWN/NOT REPORTED       KIND OF OPERATION - FERTILIZING (DUST)
          KIND OF CROP - PASTURE                                   TYPE OF CHEMICAL USED - DRY CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - AFT OF PILOT
        REMARKS- BOOSTER PUMP SEAL DEFECTIVE. HAD TO LND ON 45 DEG SLOPE.
```

## 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: Substantial damage
- Airport: Kahuku

## 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 19730313005839A](https://openairdocs.org/incident/19730313005839A), Mar 13, 1973: Hiller UH12E, Naalehu, HI, Substantial damage. Booster pump seal defective. Had to lnd on 45 deg slope.

## 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 OAK75FJA06](https://openairdocs.org/ntsb/OAK75FJA06), Dec 3, 1974: Hiller Acft UH-12E (N90474), Kapaau, HI, destroyed
- [NTSB OAK74FJA22](https://openairdocs.org/ntsb/OAK74FJA22), May 17, 1974: Hiller Acft UH-12E (N90474), Ewa Beach, 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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