LANTANA, FL, USA
N9867C
NORTH AMERICAN T-28A
THE PILOT/MECHANIC HAD RECENTLY RE-INSTALLED A REBUILT ENGINE IN THE AIRCRAFT AND PERFORMED A VERY SHORT RUN-UP PRIOR TO TAKEOFF. WITNESSES STATED THE AIRCRAFT ENGINE MADE POPPING NOISES AND WAS BELCHING BLACK SMOKE DURING THE TAKEOFF ROLL. THE AIRCRAFT BECAME AIRBORNE AND MUSHED AROUND A LEFT 180 DEGREE TURN BEFORE CRASHING IN A SWAMPY AREA AT THE AIRPORT EDGE. EXAMINATION OF THE IGNITION HARNESS AND SPARK PLUGS REVEALED THAT A 7 MM HARNESS WAS INSTALLED UTILIZING 5 MM SPARKPLUG CONNECTORS. SIX SPARKPLUGS EXHIBITED EVIDENCE OF FLASHOVER IN THE SPARKPLUG CONNECTOR WELLS. THIS CAUSED A PARTIAL POWER LOSS OF THE TOTAL REQUIRED POWER AVAILABLE AND NECESSARY FOR FLIGHT.
Source: NTSB Aviation Accident Database
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