NTSB Identification: ANC82FA059
14 CFR Part 91: General Aviation
Accident occurred Wednesday, July 14, 1982 in SKWENTNA, AK
Probable Cause Approval Date: 07/14/1983
Aircraft: AEROSPATIALE SA-318C, registration: N4966
Injuries: 1 Uninjured.
NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.
THE PILOT REPORTED THAT AFTER TAKEOFF, AT AN ALTITUDE OF 200 FEET, THE AIRCRAFT BEGAN A MODERATE VIBRATION. WHEN THE AIRCRAFT WAS LEVELED OFF AND THE POWER REDUCED, THE VIBRATION STOPPED. THE PILOT CONTINUED THE FLIGHT AND DURING A CLIMB TURN AT APPROXIMATELY 700 FEET THE VIBRATION BEGAN AGAIN WITH MORE INTENSITY. DURING LANDING THE RIGHT FRONT LANDING SKID TUBE BROKE CAUSING THE ROTOR BLADES TO FLEX AND CONTACT THE TAIL BOOM. EXAMINATION OF THE AIRCRAFT REVEALED ONE ROTOR BLADE HAD SHREDDED INFLIGHT.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:LEVEL OFF..IMPROPER..PILOT IN COMMAND
ROTOR SYSTEM,MAIN ROTOR BLADE ABRASION STRIP..DETERIORATED
LANDING GEAR,SKID ASSEMBLY..OVERLOAD
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