What happened
A twin-engine aircraft, which had been inactive for eight years, was being ferried to a pilot facilities location for a rebuild. During the cruise phase of the flight, the right engine failed. Following this failure, the propeller failed to feather. Due to the aircraft's inability to maintain altitude in that configuration, the pilot initiated a forced landing.
During the descent and forced landing sequence, the left engine also failed. The aircraft subsequently impacted soft terrain, which caused the landing gear to collapse and resulted in damage to the lower fuselage. There were no injuries reported.
The investigation
The investigation into the fuel system revealed that the left fuel tanks were empty at the time of the accident. Furthermore, the fuel line for the right outboard tank was found to be blocked. This specific tank had been selected when the right engine failed.
Additional maintenance and regulatory details noted during the investigation included that the last annual inspection of the aircraft had been conducted in 1982. The ferry permit used for this flight had expired two weeks prior to the accident. Additionally, a fuel tank had been replaced before the flight, and the pilot had applied tape to the filler cap.