Accident Details
A pilot flying to Banning airport for refueling reported that the engine began to sputter. While in the process of changing fuel tanks, the aircraft struck high tension power lines. The accident site is located in a canyon in the foothills north of the city. The power lines hang below the elevation of the canyon ridges where the towers are situated, and the lines are not marked.
Pilot Account
The pilot told responding police officers that he did not see the power lines while switching fuel tanks. He had been heading to Banning airport to refuel when the engine trouble occurred.
Witness Observations
Several ground witnesses, including an off-duty Banning police sergeant, reported observing the aircraft flying low in the canyons near the accident site for at least a 15-minute period before the collision with the power lines.
Safety Concerns
Police officers at the accident site reported concern about fuel leaking from both fuel tanks, which posed a threat to a nearby stream. The fuel leak raised environmental and safety issues.