PITTSTOWN, NJ, USA
N68020
DIMARIA BD-4D
PRE-TAKEOFF RUN-UP WAS NORMAL. AS THE ACFT LIFTED OFF THE RWY THE ENG QUIT. THE ACFT RAN OFF THE RWY ONTO SOFT GROUND & FLIPPED OVER. THE ONLY ENG MALFUNCTION FOUND WAS LOW COMPRESSION IN THE #1 CYLINDER DUE TO BOTH VALVES BEING STUCK PARTIALLY OPEN. ALL FUEL HAD DRAINED FROM THE FUEL TANKS WHILE THE ACFT LAY UPSIDE DOWN. THERE WERE NO QUICK DRAINS IN THE WING FUEL TANKS; PLUGS WERE INSTALLED INSTEAD. FUEL CAN ONLY BE CHECKED FOR CONTAMINATION BY DRAINING FUEL FROM THE QUICK DRAIN AT THE FIREWALL FILTER.
Source: NTSB Aviation Accident Database
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