Event Summary
The accident occurred during the first flight following an annual inspection. Prior to the initial takeoff, a taxi test was conducted with no discrepancies noted. The pilot reported that the engine started easily and ran smoothly at lower rpm settings. An engine run-up, including a magneto check, was performed without any anomalies.
Pilot Actions
During the takeoff roll, the pilot observed that the engine did not produce full power, with rpm not exceeding 1,600. Despite this, the pilot elected to continue the takeoff. Subsequently, he attempted to turn back to the runway for landing. As he made the crosswind to downwind turn, the left wing stalled, causing the airplane to pitch down and fall approximately 50 feet to the ground.
Post-Accident Findings
Inspection of the engine revealed weak compression in two cylinders. Further examination showed leaks from the intake and exhaust valves of both cylinders. No other discrepancies were noted.