Incident Summary
According to the pilot, the aircraft had just undergone its annual inspection, and the flight was intended to remain in the traffic pattern. Shortly after takeoff, at approximately 100 feet above ground level, the engine lost power and ceased operation. During the subsequent forced landing in a field, the aircraft nosed over.
Examination Findings
An examination of the engine revealed that the fuel flow divider contained gross quantities of contaminants. The presence of these contaminants was identified as a potential cause of fuel obstruction.
Mechanic's Insights
A mechanic stated that the contaminants could have blocked fuel delivery to one or more cylinders, causing the remaining cylinders to receive an excess of fuel due to unobstructed flow. The mechanic also noted that during an annual inspection, the fuel flow divider is not routinely disassembled for inspection.
No other details regarding the aircraft type, registration, date, operator, location, occupants, injuries, or damage were provided.