What happened
Shortly after initiating takeoff, the aircraft's engine lost power. The pilot reported that the engine stopped completely, noting the symptoms were consistent with fuel starvation. To reduce weight for an emergency landing, the pilot jettisoned the chemical cargo on board. During the subsequent landing attempt, the aircraft struck a ditch and nosed over.
The investigation
A post-accident examination of the aircraft was conducted to determine the mechanical status of the engine and airframe. Inspectors found no discrepancies in the general condition of the aircraft components. However, analysis of the spark plugs revealed the presence of a sooty deposit on the electrodes.
Findings
The primary factors contributing to this incident were the complete loss of engine power during the initial climb phase and the subsequent hard landing that caused the airframe to nose over. The presence of soot on the spark plugs suggests an issue with the ignition system or combustion efficiency, though no other mechanical faults were identified.
Safety message
Pilots should be vigilant for signs of fuel starvation or engine performance degradation immediately after takeoff. Proper weight management and emergency landing site selection are critical when dealing with sudden power loss.