WALSH, CO, USA
N4050B
BELLANCA 17-31ATC
THE PILOT REPORTED THAT DURING TAKEOFF, THE ENGINE LOST POWER AT ABOUT 75 FT AGL. WHILE MAKING A FORCED LANDING, THE AIRCRAFT STRUCK LARGE PIPES THAT WERE LAYING ON THE GROUND. AN INVESTIGATION REVEALED THE ENGINE WOULD RUN SATISFACTORLY AS LONG AS THE ELECTRIC BOOST PUMP WAS ON. WHEN THE BOOST PUMP WAS TURNED OFF, THE ENGINE WOULD CEASE TO OPERATE. THE ENGINE DRIVEN FUEL PUMP (TITAN, MODEL G6, SN: 575587W) WOULD NOT PROVIDE SUFFICIENT FUEL PRESSURE TO SUSTAIN ENGINE OPERATION. AN EXAMINATION REVEALED THE SEALS AND BEARINGS WERE WORN. NO RECORDS OR HISTORY OF THE PUMP COULD BE FOUND.
Source: NTSB Aviation Accident Database
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