# NTSB SEA66A0022: Hiller UH-12E, N5360V, Choteau, MT, September 17, 1965

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 17, 1965
- Place: Choteau, MT · CHOTEAU, MT
- Location: 47.8137° N, 112.1794° W: Placed by OpenAirDocs: center of Choteau, MT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.8137&lon=-112.1794&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report March 28, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 175860
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA66A0022
- Page: https://openairdocs.org/ntsb/SEA66A0022

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0919  65/9/17  NR.CHOTEAU,MONT.      HILLER UH-12E       CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 42, 3600
        TIME - 1745                    N5360V              PX-  0  0  1  AIR TAXI-PASSG            TOTAL HOURS, 1287 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - CHOTEAU
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            IN FLIGHT: NORMAL CRUISE
           COLLIDED WITH: BUILDING(S)                               LANDING: POWER-ON LANDING
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
           ROTORCRAFT - FLIGHT CONTROL SYSTEMS: CYCLIC PITCH CONTROL SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - POORLY PLANNED APPROACH
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING OFF AIRPORT
                                  LATERAL CONTROL PROBLEM
                                  PITCH CONTROL PROBLEM
        REMARKS- MALFUNCTION OF CYCLIC CONTROL DUE TO IMPROPER INSTALLATION.PILOT LANDED TOO CLOSE TO GRAIN BINS
```

## Aircraft

- Registration: [N5360V](https://openairdocs.org/deregistered/N5360V-2000-06-07), registration cancelled 2000-06-07, S/N 2113 (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
- Airport: Choteau

## Other investigations on N5360V (5)

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 SEA98LA124](https://openairdocs.org/ntsb/SEA98LA124), Jul 7, 1998: Hiller UH-12E (N5360V), Eltopia, WA, destroyed. Probable cause: Fatigue of the control rotor blade spar and failure of the maintenance inspector to follow the procedures set forth in the airworthiness directive.
- [NTSB OAK76DVH02](https://openairdocs.org/ntsb/OAK76DVH02), Jun 25, 1976: Hiller Acft UH-12E (N5360V), Happy Camp, CA, substantial damage
- [NTSB ANC76AA014](https://openairdocs.org/ntsb/ANC76AA014), Jul 27, 1975: Hiller Acft UH12-E (N5360V), Kobuk, AK, substantial damage
- [NTSB DEN67A0008](https://openairdocs.org/ntsb/DEN67A0008), Jul 21, 1966: Hiller UH-12E (N5360V), Escalante, UT, destroyed
- [NTSB OAK65A0069](https://openairdocs.org/ntsb/OAK65A0069-201578), Jan 4, 1965: Hiller UH12E (N5360V), Shively, 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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