Sep 2, 1993
Accident
Substantial FALL RIVER, MA
Injuries1 serious
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
FATIGUE FAILURE OF THE GYROCOPTER'S MAIN ROTOR CONTROL ARM. fACTORS RELATED TO THE ACCIDENT WERE: A LOOSE CLAMP ON THE ROTOR CONTROL ARM, DUE TO INADEQUATE MAINTENANCE OR INSPECTION, WHICH RESULTED IN CHAFING OF THE CONTROL ARM.
NTSB BFO93LA149