NTSB Identification: SEA77DYM18
14 CFR Part 91 General Aviation
Aircraft: HILLER ACFT UH12D, registration: N14490

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 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
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3-0482  77/1/27    PENDLETON,OR        HILLER ACFT UH12D   CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 31, 3065
        TIME - 1600                    N14490              PX-  0  0  1  PRACTICE                  TOTAL HOURS, 60 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          PENDLETON,OR                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
        FACTOR(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: TAIL ROTOR GEAR BOX
           MISCELLANEOUS ACTS,CONDITIONS - LOOSE,PART/FITTING
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING OFF AIRPORT
                                  DIRECTIONAL CONTROL PROBLEM
        REMARKS- DIR CTL PROB & VIB 20FT-20KTS.TWO OF FOUR T/R GEAR BOX MOUNTING BOLTS WERE LOOSE.HIT T/R DRG T/D.

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