NTSB Identification: SEA77DYM18
14 CFR Part 91 General Aviation
Aircraft: HILLER ACFT UH12D, registration: N14490----------------------------------------------------------------------------------------------------------------------------
FILE DATE LOCATION AIRCRAFT DATA INJURIES FLIGHT PILOT DATA
F S M/N PURPOSE
----------------------------------------------------------------------------------------------------------------------------
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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