Nov 20, 1997
Incident
Minor MIAMI, FL
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 121
Probable Cause
The inadequate overhaul of the No. 4 engine start valve resulting in the valve remaining open after engine start; and the subsequent free run state of the starter resulting in a starter overheat, disintegration and fire.
NTSB MIA98IA035