Introduction
A private pilot student was receiving dual instruction in preparation for a multiengine check ride. The accident occurred during this training flight, with a 76-year-old flight instructor on board. The instructor had flown 73 different make and model airplanes in the preceding four years.
Witness Observations
One witness saw the airplane approaching Runway 17, describing it as flying "a lot slower than they normally do and . . . a lot lower than usual." Another witness reported the airplane flying on an easterly heading near the midpoint of the runway, noting it was "not much higher than our hangar is tall." This second witness then observed that the airplane's left propeller was not turning, and the airplane began to "yaw to the left and roll to the left."
Accident Sequence
The airplane impacted the ground approximately 1,500 feet east of the runway. At the time of the accident, the left engine was shutdown, and the left propeller was feathered. The landing gear, which was extended and retracted by hydraulic pressure from a pump mounted on the left engine, was found in the retracted position.
Post-Accident Examination
Examination of both engines revealed no anomalies that could have affected their performance. The investigation did not identify any mechanical issues contributing to the engine shutdown.
Conclusion
The accident involved a training flight where the left engine was shut down and the propeller feathered. The aircraft subsequently impacted terrain east of the runway. No probable cause has been determined by the investigating authority.