# NTSB MIA74FKA04: Hiller Acft UH-12A, N8151H, St Thomas, VI, September 12, 1973

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 12, 1973
- Place: St Thomas, VI · ST THOMAS, VI
- Location: 18.3533° N, 64.9365° W: Placed by OpenAirDocs: center of Saint Thomas, VI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=18.3533&lon=-64.9365&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report October 23, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 188609
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA74FKA04
- Page: https://openairdocs.org/ntsb/MIA74FKA04

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2697  73/9/12    ST THOMAS,VI        HILLER ACFT UH-12A  CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1525                    N8151H              PX-  0  0  1  MAPPING/PHOTO             AGE 24, 348 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            15 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - HARRY S TRUMAN
        DEPARTURE POINT             INTENDED DESTINATION
          ST THOMAS,VI                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  TAXI: AERIAL TAXI TO TAKEOFF
           ROLL OVER                                                TAXI: AERIAL TAXI TO TAKEOFF
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
        REMARKS- DRG ATMPT HOLD SHORT OF RWY ABT 12 AGL AS FWD MOVEMENT BEGAN TO STOP LOST ROTOR AND ENG RPM.
```

## Aircraft

- Registration: [N8151H](https://openairdocs.org/deregistered/N8151H-2023-05-06), registration cancelled 2023-05-06, S/N 151, built 1950 (OpenAirDocs)
- Reported make and model: HILLER ACFT UH-12A
- Registry model: [Hiller UH-12A](https://openairdocs.org/model/hiller-uh-12a) (registry code 4360104) (OpenAirDocs)
- Registry engine: [Franklin 6V4 series](https://openairdocs.org/engine/franklin-6v4-series) (registry code 27033, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Harry S Truman

## 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 19730912029749A](https://openairdocs.org/incident/19730912029749A), Sep 12, 1973: Hiller UH12C, St Thomas, Puerto Rico, Substantial damage. Drg atmpt hold short of rwy abt 12 AGL as fwd movement began to stop lost rotor and eng RPM.

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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