What happened
Shortly after departing, the right engine of the aircraft suffered a total loss of power, causing the plane to lose airspeed. As the aircraft reached an altitude of roughly 91 feet, it entered an uncontrolled descent characterized by a right-hand roll consistent with a velocity minimum control (VMC) roll. The aircraft crashed during the initial climb phase.
Investigation of the wreckage showed that the landing gear had been retracted and the propeller on the right engine had feathered. While no mechanical failures were found in the airframe or engines, the right engine fuel selector was found in an intermediate position, neither fully on nor fully off. This position was between the "60 GAL RIGHT AUX" and "RIGHT ENG OFF" detents, a setting that, according to cockpit placards, prevents fuel flow to the engines.
Findings
Several critical factors contributed to the accident. The aircraft was loaded with significant cargo, and the rear cargo bin contained 265 pounds, far exceeding its 75-pound limit. Although other bins were under their limits, the overall loading caused the actual center of gravity to be located behind the aft limit.
Erroneous weight and balance calculations performed by the pilot meant the aircraft was operating in an unstable configuration. This aft center of gravity increased the minimum airspeed required to maintain control during an engine failure. Given the loss of power on the right engine, the aircraft lacked the performance capability to maintain a safe climb or prevent the VMC roll.