What happened
Following reports from witnesses of engine sputtering, the pilot initiated a turn back toward the departure airport. During this maneuver, the engine ceased operation entirely, resulting in the left wing dropping significantly.
The investigation
A thorough examination of the wreckage was conducted to determine the cause of the power loss. Inspectors found that there was no fuel present in the fuel lines leading to the carburetor. Further inspection revealed that the fuel selector had been positioned to draw from the left fuel tank, which contained no usable fuel.
Findings
The primary factor contributing to the accident was the depletion of available fuel resources. The aircraft operated until all usable fuel was consumed, leading to a complete loss of power during the critical phase of flight.