What happened
During the final approach phase, while descending through 1,200 feet MSL, the pilot transitioned the electric fuel pumps to the low setting. Within seconds of this adjustment, a backfire was heard, followed by a total loss of power to both engines. The pilot attempted to verify that the engine fuel mixture controls and the fuel tank selector were in the proper positions but was unable to restore power. Consequently, the pilot executed an off-airport forced landing into a marsh located short of the airport.
The investigation
FAA inspectors examined the aircraft's fuel system following the accident. They discovered that the main fuel tanks were 3/4 full, while the auxiliary and wing locker fuel tanks were empty. Additionally, the investigation revealed that the pilot's biennial flight review was six months past due.