Jul 28, 1999
Accident
Substantial LA FAYETTE, IL
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
the pilot's failure to obtain/maintain the proper descent rate. A factor to the accident was the partial loss of engine power as a result of the exhaust valve keeper becoming unlocked, which jammed the exhaust valve.
NTSB CHI99LA275