Incident Overview
An airplane experienced a loss of engine power while in cruise flight due to fuel exhaustion. The subsequent forced landing was conducted on the only available terrain, which was unsuitable, resulting in a collision with a tree.
Pilot Actions and Statements
According to the pilot's report, his pre-flight examination verified that the airplane was fueled to capacity prior to his checkout and positioning flight from Phoenix to Scottsdale, Arizona. He departed Scottsdale at 0520 PST the next morning, and the engine lost power at approximately 0950 MST. The pilot stated that he should have had 5.7 gallons remaining after landing at the destination, Telluride Airport. He also noted that checking the fuel gauges was part of his scan, which he ran every few seconds during the flight.
Company Officials' Account
Company officials reported that the airplane was not fueled to capacity. They stated that 3.0 gallons per tank (6.0 gallons total) were routinely withheld to prevent fuel expansion and venting.
FAA Inspection Findings
An FAA inspector examined the airplane and found no fuel in the right tank, very little fuel in the left tank, and residual fuel in the sumps and gascolator.
Conclusion
The engine power loss was attributed to fuel exhaustion, leading to a forced landing and collision with a tree.