# NTSB OAK71DVA46: Hiller Acft UH-12C, N5315V, Fresno, CA, December 16, 1970

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 16, 1970
- Place: Fresno, CA · FRESNO, CA
- Location: 36.7477° N, 119.7724° W: Placed by OpenAirDocs: center of Fresno, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.7477&lon=-119.7724&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report March 23, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 159294
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK71DVA46
- Page: https://openairdocs.org/ntsb/OAK71DVA46

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2412  70/12/16   FRESNO,CALIF        HILLER ACFT UH-12C  CR-  0  0  1  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1435                    N5315V              PX-  0  0  0  TRAINING                  AGE 22, 1014 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            7 IN TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - FRESNO
        DEPARTURE POINT             INTENDED DESTINATION
          FRESNO,CALIF                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: HOVERING
           ROLL OVER                                                LANDING: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED ALTITUDE AND CLEARANCE
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
           PERSONNEL - FLIGHT INSTRUCTOR: INADEQUATE TRAINING OF STUDENT
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
                                  DIRECTIONAL CONTROL PROBLEM
                                  SUSPECTED MECHANICAL DISCREPANCY
        REMARKS- TAIL ROTOR BLADES APPARENTLY HIT GND,BROKE,DURG HOVER. LOST CTL ON TKOF,HIT GND,ROLLED OVER.
```

## Aircraft

- Registration: [N5315V](https://openairdocs.org/aircraft/N5315V), registered now, S/N 757, built 1956 (OpenAirDocs)
- Reported make and model: HILLER ACFT UH-12C
- Registry model: [Hiller UH-12C](https://openairdocs.org/model/hiller-uh-12c) (registry code 4360116) (OpenAirDocs)
- Registry engine: [Franklin 6V 350 series](https://openairdocs.org/engine/franklin-6v-350-series) (registry code 27043, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Fresno

## Other investigations on N5315V (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 UNK64X0705](https://openairdocs.org/ntsb/UNK64X0705), Feb 27, 1964: Hiller UH12C (N5315V), Chatsworth, 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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