# NTSB OAK74FJA22: Hiller Acft UH-12E, N90474, Ewa Beach, HI, May 17, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 17, 1974
- Place: Ewa Beach, HI · EWA BEACH, HI
- Location: 21.3127° N, 158.0061° W: Placed by OpenAirDocs: center of Ewa Beach, HI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=21.3127&lon=-158.0061&mi=10
- Phase of flight: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report June 21, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 186140
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK74FJA22
- Page: https://openairdocs.org/ntsb/OAK74FJA22

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1067  74/5/17  NR.EWA BEACH,HAWAII   HILLER ACFT UH-12E  CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 27, 3534
        TIME - 0805                    N90474              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 1500 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         EWA BEACH,HAWAII             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR ACCIDENT TO PERSON                       STATIC: IDLING ROTORS
        PROBABLE CAUSE(S)
           PERSONNEL - MISCELLANEOUS-PERSONNEL: GROUND CREWMAN
           PERSONNEL - OPERATIONAL SUPERVISORY PERSONNEL: INADEQUATE SUPERVISION/TRAINING OF RAMP CREWS
        REMARKS- GROUND SERVICE ATTENDENT WALKED INTO TAIL ROTOR.
```

## 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

## 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 19740517013149A](https://openairdocs.org/incident/19740517013149A), May 17, 1974: Hiller UH12E, Ewa Beach, HI, Substantial damage. Ground service attendent walked into tail rotor.

## 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 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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