# NTSB OAK72FJA12: Bell 47G-5, N8544F, Koloa, HI, January 21, 1972

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: January 21, 1972
- Place: Koloa, HI · KOLOA, HI
- Location: 21.9030° N, 159.4611° W: Placed by OpenAirDocs: center of Koloa, HI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=21.9030&lon=-159.4611&mi=10
- Phase of flight: [Uncontrolled descent](https://openairdocs.org/ntsb-phases/650) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report September 28, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 165241
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK72FJA12
- Page: https://openairdocs.org/ntsb/OAK72FJA12

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0283  72/1/21    KOLOA,HAWAII        BELL 47G-5          CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 0830                    N8544F              PX-  0  0  0  AERIAL APPLICATION        AGE 31, 4700 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            500 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          KOLOA,HAWAII                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           ROTORCRAFT - FLIGHT CONTROL SYSTEMS: CYCLIC PITCH CONTROL SYSTEM
           SYSTEMS - FLIGHT CONTROL SYSTEMS: FLIGHT CONTROL BOOST SYSTEMS, HYDRAULIC
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 4700                       KIND OF OPERATION - OTHER
          KIND OF CROP - OTHER                                     TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - SIDES                             TERRAIN-TYPE -ROLLING
          ELEVATION-AREA BEING TREATED-FEET -  500
        REMARKS- CTL BOOST CYL FAILED IN LOCKED PSN.PLT UN TO MOVE CYCLIC CTL FORE OR AFT.HELO HIT IN NS DN ATT.
```

## Aircraft

- Registration: N8544F (not matched to a registry record)
- Reported make and model: BELL 47G-5
- Category: Helicopter
- Engines: reciprocating
- Damage: 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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