# NTSB SEA78FYE16: Hiller Acft UH-12E, N5359V, Forks, WA, March 20, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 20, 1978
- Place: Forks, WA · FORKS, WA
- Location: 47.9528° N, 124.3902° W: Placed by OpenAirDocs: center of Forks, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.9528&lon=-124.3902&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report April 6, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 142566
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA78FYE16
- Page: https://openairdocs.org/ntsb/SEA78FYE16

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0350  78/3/20  NR.FORKS,WA           HILLER ACFT UH-12E  CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 29, 2514
        TIME - 1210                    N5359V              PX-  0  0  0  CTR CARGO-D               TOTAL HOURS, 22 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         FORKS,WA                     LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: HOVERING
           COLLIDED WITH: TREES                                     LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           ROTORCRAFT - FLIGHT CONTROL SYSTEMS: TAIL ROTOR PITCH CONTROL SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - FRAYED
           MISCELLANEOUS ACTS,CONDITIONS - EXCESSIVE-WEAR/PLAY
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- SHORT CABLE TO AUX ANTI-TORQUE PEDAL FAILED. 100 HR INSPECTION COMP 16 HRS PRIOR.
```

## Aircraft

- Registration: [N5359V](https://openairdocs.org/deregistered/N5359V-2013-06-07), registration cancelled 2013-06-07, S/N 2098, built 1961 (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)
- Registry engine: [Allison 250 series](https://openairdocs.org/engine/allison-250-series) (registry code 03014, turbo-prop) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N5359V (3)

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 LAX84LA428](https://openairdocs.org/ntsb/LAX84LA428), Aug 4, 1984: Hiller UH-12ET (N5359V), Delano, CA, substantial damage
- [NTSB SEA80DYE32](https://openairdocs.org/ntsb/SEA80DYE32), May 15, 1980: Hiller Acft UH-12E (N5359V), Forks, WA, destroyed
- [NTSB ANC76DAG17](https://openairdocs.org/ntsb/ANC76DAG17-150436), Jul 21, 1975: Hiller Acft UH-12E (N5359V), Kenai, AK, destroyed

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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