Jan 17, 1997
Accident
Substantial BOCA RATON, FL
Injuries1 minor
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
Improper overhaul of the left magneto which resulted in a defect in the left magneto rotating magnet to go undetected which caused the magneto to stop rotating and break several teeth from engine crankshaft gears and disconnect the crankshaft drive gear.
NTSB MIA97LA065