MONTICELLO, UT, USA
N271VT
AERO COMMANDER 680FL
THE ACFT CRASHED WHILE DOING MAGNETOMETER SURVEYS AT LOW ALTITUDE. THE RIGHT ENGINE HAD LOST POWER THEN REGAINED IT FOR A SHORT PERIOD AND LOST IT AGAIN. A VIDEOTAPE IN THE ACFT RECORDED THE PLT SAYING, 'I CHANGED THAT # JUST IN TIME.' THE ACFT YAWED AND THE PROPELLER SLOWED AT THE SAME TIME. THE FUEL SELECTOR VALVES WERE FOUND ON THE CENTER TANKS. THE BOOST PUMP SWITCHES WERE FOUND IN THE OFF POSITION. WHEN CHANGING FROM OUTBOARD TO CENTER TANKS THE BOOST PUMPS MUST BE ON OR FUEL STARVATION WILL OCCUR. AS THE ACFT SLOWED THE TAPE REVEALED THAT THE CO-PLT CALLED OUT'DOWN TO 90'. 90 MPH ISVMC. THE ACFT STALLED, SHORTLY AFTER THE ASYMMETRICAL THRUST ROLLED THE ACFT TO THE RIGHT AND INTO THE GROUND.
Source: NTSB Aviation Accident Database
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