# NTSB OAK77DVW25: Hiller 12SL4, N90461, Bishop, CA, July 1, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 1, 1977
- Place: Bishop, CA · BISHOP, CA
- Location: 37.3672° N, 118.3989° W: Placed by OpenAirDocs: center of Bishop, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.3672&lon=-118.3989&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report July 25, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 157313
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK77DVW25
- Page: https://openairdocs.org/ntsb/OAK77DVW25

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1253   77/7/1  NR.BISHOP,CA          HILLER 12SL4        CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 43, 14353
        TIME - 1010                    N90461              PX-  0  0  1  POWER/PIPELINE            TOTAL HOURS, 4050 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          BISHOP,CA                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           ROLL OVER                                                LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - WATER IN FUEL
        FACTOR(S)
           TERRAIN - ROUGH/UNEVEN
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
```

## Aircraft

- Registration: [N90461](https://openairdocs.org/deregistered/N90461-2013-05-17), registration cancelled 2013-05-17, S/N 2514, built 1965 (OpenAirDocs)
- Reported make and model: HILLER 12SL4
- Registry model: [Hiller UH-12L4](https://openairdocs.org/model/hiller-uh-12l4) (registry code 4360128) (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

## 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 19770701016829A](https://openairdocs.org/incident/19770701016829A), Jul 1, 1977: Hiller UH12L4, Bishop, CA, Substantial damage

## Other investigations on N90461 (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 LAX84LA294](https://openairdocs.org/ntsb/LAX84LA294), May 10, 1984: Hiller UH-12E (Soloy) (N90461), Delano, 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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