Accident Overview
Shortly after departure from Jacksonville-Intl Airport, the aircraft began its initial climb. At that point, the right engine ceased to operate. The crew did not actuate the propeller feathering mechanism. Loss of control ensued, and the aircraft crashed.
Occupant Injuries and Aircraft Damage
The accident resulted in one passenger sustaining serious injuries. The other five individuals on board were killed. The aircraft was destroyed by the impact.
Probable Cause and Reported Factors
The official probable cause of the accident was an uncontrolled descent during initial climb following an engine failure. The investigation reported the following factors: inadequate inspection of the aircraft; failure to maintain flying speed; failure to follow approved procedures; improper emergency procedures; failure of the ignition system due to spark plugs and carbon deposit; engine structure issues with the blower and impeller assembly; material failure; inadequate preflight preparation; improper loading of the aircraft, which was 798 pounds over gross weight and had its center of gravity 2.9 inches aft of the rear limit; complete failure of the right engine; poor general maintenance; fouled plugs; the propeller not being feathered; and the right engine incapable of producing full power.