What happened
During the preflight inspection, the pilot drained the fuel sumps and reported that no water was detected. As the aircraft became airborne during the takeoff roll at just under 70 knots, it remained within ground effect at an altitude of approximately 3 to 5 feet while accelerating toward 80 knots.
During this phase, the left engine experienced a reduction in power, causing the airplane to settle, though it did not touch the runway. The power in the left engine fluctuated, increasing and decreasing, which caused the aircraft to drift to the left. To avoid obstacles, the pilot maneuvered the airplane over a fence, a ditch, and trees before ultimately landing in a field. Upon landing, the main landing gear collapsed, and the aircraft collided with trees.
The investigation
An examination of the aircraft by the FAA found no evidence of mechanical failure in either engine. However, investigators discovered water within the left engine gascolator sump bowl and the internal baffle assembly. Additionally, congealed contaminants were found on the fuel screen. Observations of the engine components noted that the piston domes and the number 2, 3, and 6 cylinder sparkplugs appeared white in color.