Incident Overview
During a dual instructional flight, the flight instructor reduced power to 'just above idle' to simulate an engine-out approach for the student. At the completion of the maneuver, the student added power, but the engine failed to respond. The instructor took control and conducted a forced landing to the field the student had been using as a target for the approach. The terrain was soft, and during the landing roll, the aircraft nosed over.
Examination Findings
Examination of the aircraft and engine provided evidence that the boost pump was improperly wired, causing it to deliver high boost regardless of whether the switch was set to high or low. The switch was found in the low position, as prescribed for the maneuver being conducted. The investigation was unable to determine when or who made the wiring change.
Subsequent Actions
The aircraft sustained damage from the nose-over. No other details were provided regarding injuries or further consequences.