What happened
During a daytime cross-country flight, the airplane experienced a complete loss of power from the left engine. The pilot attempted normal restart procedures, which included selecting the cross-feed position, but these efforts failed to restore power to the left engine.
Following the initial failure, the pilot diverted to an en route airport to perform a single-engine approach and landing. However, as the pilot initiated a single-engine go-around, a complete loss of power occurred to the right engine as well. The aircraft subsequently impacted trees and terrain located off the departure end of the runway.
The investigation
Mechanical examination of the aircraft revealed two distinct failures contributing to the dual engine loss. Investigators found a broken fuel fitting on the left fuel selector unit. Additionally, the investigation identified worn threads on a fuel fitting located on the right engine.