Event Details
The on-demand cargo airplane was not operating on a flight plan when it impacted terrain during a visual approach to a second alternate airport. The pilot had diverted from the original destination due to convective weather and then from the first alternate for the same reason.
Pilot Report
The pilot stated that during a visual approach to the second alternate airport, he encountered a "very strong" gust 25-50 feet above ground level that blew the airplane "well" to the left side of the runway. He attempted a go-around and applied full engine power but "it felt like" the engine(s) did not develop full power.
Fuel Examination
After the accident, the left main fuel tank was broken open and contained no fuel. The right main fuel tank contained 27 gallons of fuel. Both fuel selectors were positioned to their respective auxiliary fuel tanks. The left auxiliary fuel tank contained 1.2 gallons of fuel, and the right auxiliary fuel tank contained 0.5 gallons of fuel.
Propeller and Equipment
The left engine propeller separated from the left engine and displayed torsional bending and twisting. The right propeller remained attached to the right engine and did not display evidence of torsional bending and twisting. The airplane was not equipped with weather detection equipment.
Regulatory Compliance
There was no record that the pilot obtained a weather briefing or filed a flight plan prior to departure for the destination airport as required by company and Federal Aviation Regulations.