Incident Details
Both pilots reported that approximately 200 feet above ground level after takeoff, the aircraft experienced a loss of power. The instructor pilot then took command of the aircraft, manipulated the throttle to confirm the power loss, and subsequently executed a forced landing.
Post-Accident Engine Test
Following the accident, the engine was removed and tested in a factory test cell. It operated satisfactorily, indicating no internal mechanical failure.
Inspection Findings
An FAA inspector examined the aircraft and noted two positions of the mixture control. The mixture control lever in the cockpit was found aft of its locking mechanism. However, the mixture control on the fuel injection system servo body was observed to be in the full rich position. The mixture control cable had been replaced by the operator prior to the accident.
Locking Mechanism Purpose
According to the pilot operating handbook, the locking mechanism is designed to prevent inadvertent activation of the mixture control when the pilot intends to operate the propeller pitch control.