# NTSB OAK79DVA30: Hiller UH-12E, N4027D, Gustine, CA, April 27, 1979

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: April 27, 1979
- Place: Gustine, CA · GUSTINE, CA
- Location: 37.2530° N, 120.9952° W: Placed by OpenAirDocs: center of Gustine, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.2530&lon=-120.9952&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report May 22, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 136511
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK79DVA30
- Page: https://openairdocs.org/ntsb/OAK79DVA30

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0576  79/4/27    GUSTINE,CA          HILLER UH-12E       CR-  0  0  1  COMMERCIAL                AIRLINE TRANSPORT, AGE
        TIME - 1800                    N4027D              PX-  0  0  0  AERIAL APPLICATION        34, 5750 TOTAL HOURS, 50
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          GUSTINE,CA                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: WIRES/POLES                               IN FLIGHT: PULLUP FROM SWATH RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OBJECTS OR OBSTRUCTIONS
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SUNGLARE
```

## Aircraft

- Registration: [N4027D](https://openairdocs.org/aircraft/N4027D), registered now, S/N 5072 (OpenAirDocs)
- Reported make and model: HILLER 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 19790427007179A](https://openairdocs.org/incident/19790427007179A), Apr 27, 1979: Hiller UH12E, Gustine, CA, Substantial damage. Pilot hit a wire while spraying agricultural chemicals.

## Other investigations on N4027D (2)

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 LAX95LA318](https://openairdocs.org/ntsb/LAX95LA318), Sep 1, 1995: Hiller UH-12E (N4027D), Dos Palos, CA, substantial damage. Probable cause: the fatigue failure of the tail rotor tension torsion bar plates.
- [NTSB LAX83LA069](https://openairdocs.org/ntsb/LAX83LA069), Jan 8, 1983: Hiller UH-12E (N4027D), Near Vacaville, CA, 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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