WICHITA, KS, USA
N190BT
BEECH 65-90
THE PLT DETECTED A LOSS OF ENG TORQUE AT ABOUT ROTATION AIRSPEED ABOUT 1700 FT DOWN THE RWY & THE TAKEOFF WAS ABORTED. THE ACFT SLID INTO A DITCH OFF THE END OF THE RWY COLLAPSING THE MAIN GEAR. A FUNCTIONAL CHECK OF THE RIGHT ENG FUEL PUMP, P/N4V146R002, SER.#JX241439D, MANUFACTURED BY SPERRY VICKERS SHOWED THAT AT HIGH PUMP SPEED FUEL FLOW WAS INTERMITTENT. DISASSEMBLY OF THE PUMP REVEALED THAT THE ROTOR DRIVE SERRATIONS ON THE MAIN ROTOR DRIVE SHAFT, P/N330205,WERE WORN TO THE POINT THAT THE ROTOR WOULD SLIP ON THE SHAFT AT HIGH PUMP SPEEDS.
Source: NTSB Aviation Accident Database
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