Incident Overview
A pilot-rated passenger (PRP) was operating the airplane from the rear seat during a landing approach to a grass strip. While on final approach to the north, the PRP observed an ultralight aircraft departing the grass strip to the south and maneuvered the airplane to the northeast.
Loss of Control
At that point, the commercial pilot seated in the front seat assumed control. He pitched the airplane's nose upward 'to climb a little and reduce speed.' As he turned the airplane left from downwind to base, the nose 'pitched down sharply and impacted the ground.' The pilot reported that during the turn, the 'engine died,' and he continued turning toward an open area.
Wreckage Examination
Post-accident inspection of the wreckage revealed that one propeller blade 'exhibited evidence of power.' Additionally, deep gouges in the ground 'appear to be propeller slashes.' Continuity was confirmed for all flight control systems.
Pilot and Passenger Statements
The PRP stated that 'he did not observe any problems with the aircraft or engine performance' prior to the event.