Jun 21, 2023
Accident
Substantial Waunakee, WI
Injuries2 minor
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
A total loss of engine power during the initial takeoff climb due to a worn manual fuel primer pump locking mechanism, which resulted in an unlocked primer and an overly rich fuel mixture.
NTSB CEN23LA250