The NTSB tried to determine if the pilot miscalculating the fuel burn, the distance or possibly the wind, or even an engine problem might have been responsible for the accident. Aiding the investigation was a digital data module that recorded basic GPS, engine and flight parameters. A preliminary review of the available data indicated the flight lasted 2.3 hours at a cruise altitude of about 3,000 ft msl with an engine manifold pressure of 26.5 to 27 inches of mercury. The engine data also indicated that 60.4% of the flight, about 1.4 hours, was operated in excess of 5,500 rpm. The Rotax 912iS rpm redlines at 5,800 rpm and carries a placard against operating the engine at that power setting for more than five minutes at a time.