NTSB Identification: FTW84LA099.
The docket is stored on NTSB microfiche number 23739.
Accident occurred Friday, December 16, 1983 in IMPERIAL, TX
Aircraft: HILLER UH-12C, registration: N63MC
Injuries: 2 Uninjured.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
THE PLT REPORTED THAT WHEN HE WAS IN CRUISE FLT AT 300 FT AGL, A SUDDEN VIOLENT SHUDDER WENT THRU THE WHOLE HELICOPTER, THEN THE SHUDDER STOPPED. HE NOTED NO CHANGE IN THE FLIT CHARACTERISTICS OR ENG POWER. THE PLT ELECTED TO MAKE A PRECAUTIONARY LANDING BY FLYING DIRECTLY TO THE GROUND WITH NO HOVER. DURING THE LANDING, THE TAIL BOOM STRUCK THE GROUND, THEN THE MAIN ROTOR BLADES STRUCK THE TAIL BOOM. NO CAUSE FOR THE 'SHUDDER' WAS FOUND.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:LEVEL OFF..IMPROPER..PILOT IN COMMAND
REASON FOR OCCURRENCE UNDETERMINED
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