Dec 2, 2024
Accident
Substantial Boscobel, WI
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
The ice obstruction of the engine oil breather tube and alternate air outlet, which resulted in a failure of the crankcase oil seal and loss of engine oil. Contributing to the accident was the incorrect engine oil breather tube installed in the airplane by maintenance personnel.
NTSB CEN25LA053