NTSB Identification: OAK73FVM40
14 CFR Part 91 General Aviation
Aircraft: HILLER ACFT UH-12C, registration: N9734C
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 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
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3-2233  73/6/28    SALINAS,CALIF       HILLER ACFT UH-12C  CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 0720                    N9734C              PX-  0  0  0  AERIAL APPLICATION        AGE 54, 11949 TOTAL
                                       DAMAGE-DESTROYED    OT-  0  0  0                            HOURS, 1540 IN TYPE,
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - SALINAS
        DEPARTURE POINT             INTENDED DESTINATION
          QUAIL CREEK,CALIF           LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      IN FLIGHT: STARTING SWATH RUN
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           ROTORCRAFT - ROTOR ASSEMBLIES: MAIN ROTOR HEAD ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 9999                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - LETTUCE                                   TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - BELLY                             TERRAIN-TYPE -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  82                  SWATH RUN-HOW FLOWN - WIND CALM
          PROCEDURE TURNAROUND - THIRD 1/3 TURN
        REMARKS- MN ROTOR HUB ASSEMBLY,P/N 51437-7,FRACTURED THRU COUNTER BALANCE STUDS.
Full narrative is not available


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