May 4, 1998
Incident
Minor SYRACUSE, NY
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 121
Probable Cause
Improper maintenance which resulted in a cross threaded\ mistapped counterweight bolt hole, and the subsequent failure of the propeller counterweight clamp assembly. Also causal was the inadequate inspection of the counterweight clamp threads by maintenance personnel which failed to detect the damaged counterweight threads.
NTSB NYC98IA106