# NTSB CHI74AC096: Hiller Acft UH-12B, N6744C, Custar, OH, June 2, 1974

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: June 2, 1974
- Place: Custar, OH · CUSTAR, OH
- Location: 41.2846° N, 83.8438° W: Placed by OpenAirDocs: center of Custar, OH, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.2846&lon=-83.8438&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal, 1 serious
- Status: Completed, report August 22, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 130211
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI74AC096
- Page: https://openairdocs.org/ntsb/CHI74AC096

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2250   74/6/2    CUSTAR,OHIO         HILLER ACFT UH-12B  CR-  1  0  0  COMMERCIAL                COMMERCIAL, AGE 26, 2100
        TIME - 1902                    N6744C              PX-  0  1  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, UNK/NR IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          CUSTAR,OHIO                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: TAIL ROTOR                      IN FLIGHT: NORMAL CRUISE
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           INSTRUMENTS/EQUIPMENT AND ACCESSORIES - MISCELLANEOUS EQUIPMENT: SPRAY,DUSTING EQUIPMENT
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           ROTORCRAFT - ROTOR ASSEMBLIES: OTHER
           MISCELLANEOUS - FOREIGN OBJECT DAMAGE
           MISCELLANEOUS ACTS,CONDITIONS - INTERFERENCE WITH FLIGHT CONTROLS
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - UNKNOWN/NOT REPORTED       KIND OF OPERATION - DEFOLIATION (LIQUID)
          KIND OF CROP - UNKNOWN/NOT REPORTED                      PILOT' S SEAT BELT -FASTENED-PROPERLY
          CRASH HELMET - AVAILABLE-NOT USED                        TANK/HOPPER-LOCATION - AFT OF PILOT
         FIRE AFTER IMPACT
        REMARKS- SPRAY BOOM INSTALLATION FAILED STRUCK TAIL ROTOR
```

## Aircraft

- Registration: [N6744C](https://openairdocs.org/aircraft/N6744C), registered now, S/N 556 (OpenAirDocs)
- Reported make and model: HILLER ACFT UH-12B
- Registry model: [Hiller UH-12B](https://openairdocs.org/model/hiller-uh-12b) (registry code 4360110) (OpenAirDocs)
- Registry engine: [Franklin 6VS-335 series](https://openairdocs.org/engine/franklin-6vs-335-series) (registry code 27040, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed

## 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 19740602031629A](https://openairdocs.org/incident/19740602031629A), Jun 2, 1974: Hiller UH12B, Custar, OH, Destroyed. Spray boom installation failed struck tail rotor

## Other investigations on N6744C (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 FTW73DPJ20](https://openairdocs.org/ntsb/FTW73DPJ20), May 28, 1973: Hiller UH-12B (N6744C), Guymon, OK, 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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