Oct 10, 1989
Accident
Destroyed LACEY TOWNSHIP, NJ
Injuries5 fatal
Phase of Flight-
ConditionsVMC
OperationFAR 135
Probable Cause
IN-FLIGHT SEPARATION OF A MAIN ROTOR BLADE DUE TO FATIGUE FAILURE OF THE MAIN ROTOR BLADE SPAR, WHICH ORIGINATED AT A MANUFACTURING INDUCED SCRATCH (TOOL MARK) THAT WAS THE RESULT OF INADEQUATE QUALITY CONTROL.
NTSB NYC90MA009