Event Overview
During a takeoff, the aircraft's engine began running rough at approximately 350 feet and subsequently cut out. The pilot executed a forced landing, during which the aircraft touched down hard and nosed over in a clearing.
Pilot's Account
The pilot reported that during the preflight inspection, he drained the main sediment bowl for five seconds, then repeated the draining for an additional five seconds. He stated that he performed an engine run-up, switched all fuel tanks on, and initiated the takeoff.
Investigation Findings
After the incident, approximately half a cup of water was drained from the main strainer bowl. Water was also found at the outer four drain points in the fuel system. The left wing tank sump drain and both belly sump drains exhibited corrosion and could not be opened with a standard fuel drain cup.