Preflight and Fuel Inspection
The aircraft was equipped with rubber bladder long-range fuel tanks with a total capacity of 84 gallons. During the preflight inspection, the pilot estimated approximately 26 gallons in the right wing tank and 27 gallons in the left wing tank. Fuel samples taken from the wing tanks were found to contain water. The pilot then rocked the wings several times and held the empennage to the ground, after which an additional teaspoon of water was drained from the left wing tank, and a full fuel drain tube of water was obtained from the right wing tank. The pilot repeated the draining procedure until no water was observed in subsequent samples.
Engine Start and Takeoff
The engine was started with the fuel selector set to the left tank position. During taxi, the selector was moved to the right tank position. For the run-up and takeoff, the pilot switched the fuel selector to the both position. The pilot reported that as the airplane was rotated for takeoff, the engine immediately surged and then lost power.
Forced Landing and Impact
Following the power loss, the pilot lowered full flaps and initiated a straight-ahead descent. The aircraft subsequently impacted the roof of a house in a residential area.
Post-Accident Examination
Examination of the wreckage revealed no mechanical problems with the aircraft. Additionally, no fuel contaminants were found in the remaining fuel.