Accident Sequence
Witnesses reported hearing the left engine sputtering during the takeoff roll. The airplane became airborne, then veered to the left, stalled, and impacted the ground. The pilot had flown to the airport to have radio work done. During a two-hour parking period on the ramp, heavy rain occurred. Subsequently, the airplane was taxied to a fixed-base operator (FBO) and fueled. During the subsequent takeoff, the left engine quit.
Post-Accident Examination
No water was found in the refueling truck, and other aircraft were fueled from the same truck before and after the accident with no discrepancies reported. Examination of the accident airplane revealed water in both engine fuel pumps. The thermos-type fuel caps for both main tanks were found loose, and their seals were cracked. An airworthiness directive (AD) requires annual inspection of the fuel caps. The aircraft log indicated that this inspection was performed approximately one month prior to the accident.