Dec 9, 2011
Accident
Substantial Sioux Falls, SD
Injuries4 fatal
Phase of Flight-
ConditionsVMC
OperationFAR 135
Probable Cause
The pilot’s failure to maintain adequate airspeed after shutting down one engine, which resulted in an inadvertent aerodynamic stall and impact with terrain. Contributing to the accident was the pilot’s failure to follow the guidance contained in the pilot’s operating handbook, which advised feathering the propeller of the secured engine and retracting the flaps and landing gear.
NTSB CEN12FA100