Flight Sequence
During the downwind leg of a training flight, the private pilot dual student reportedly switched the fuel selector valve to the tank with the most fuel. The engine continued to operate normally after the selection.
Power Loss
The engine maintained normal operation until the local controller instructed the flight to execute a go-around. At that moment, the engine experienced a total loss of power.
Emergency Response
The certified flight instructor (CFI) assumed command of the airplane and performed an emergency landing. During the landing, the aircraft struck a dike and nosed over into a slough.
Post-Accident Statements
The CFI stated his suspicion that the fuel selector valve was not properly seated in the detent position. No other contributing factors were identified.