# NTSB MIA79DKJ59: Hiller Acft UH-12E, N702WA, Tuscaloosa, AL, August 10, 1979

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 10, 1979
- Place: Tuscaloosa, AL · TUSCALOOSA, AL
- Location: 33.2098° N, 87.5692° W: Placed by OpenAirDocs: center of Tuscaloosa, AL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.2098&lon=-87.5692&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report January 4, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 133781
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA79DKJ59
- Page: https://openairdocs.org/ntsb/MIA79DKJ59

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3708  79/8/10    TUSCALOOSA,AL       HILLER ACFT UH-12E  CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 0820                    N702WA              PX-  0  0  1  ASSOC CROP CTL ACTIVITY   AGE 26, 2737 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            132 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          TUSCALOOSA,AL               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      LANDING: FINAL APPROACH
           HARD LANDING                                             LANDING: POWER-ON LANDING
        PROBABLE CAUSE(S)
           ROTORCRAFT - ROTOR ASSEMBLIES: MAIN ROTOR HEAD ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - CORRODED/CORROSION
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
                                  LATERAL CONTROL PROBLEM
                                  PITCH CONTROL PROBLEM
        REMARKS- PIN,MAIN ROTOR,OUTBOARD,TENSION-TORSION BAR P/N 51452,S/N 8716.
```

## Aircraft

- Registration: [N702WA](https://openairdocs.org/aircraft/N702WA), registered now, S/N 2185 (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)
- 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 19790810024779A](https://openairdocs.org/incident/19790810024779A), Aug 10, 1979: Hiller UH12E, Tuscaloosa, AL, Substantial damage. The tension-torsion pin, Hiller p/n 51452, failed due to fatigue.

## Other investigations on N702WA (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 ATL81DKJ22](https://openairdocs.org/ntsb/ATL81DKJ22), Jul 10, 1981: Hiller Acft UH-12E (N702WA), Centreville, AL, 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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