Incident
A student pilot, with a total of 60 flight hours including 25 hours in type (all dual), was flying with his current flight instructor. They returned to their home base airport to perform a prearranged go-around, intended to finalize their dual period for the evening. After completing the approach to the runway, the instructor called for a go-around. Once the climb was established at approximately 500 feet above ground level (AGL), the instructor directed the student to open the cowl flaps. Moments later, the engine suddenly and without warning quit.
Sequence of Events
Following the engine failure, the student pilot pulled the control yoke all the way back, causing the aircraft to enter a deep stall. The instructor reported this sequence of events. No further details about the outcome of the stall or the subsequent handling were provided in the source.
Aircraft Modifications
The airplane had been modified to accommodate an engine with more horsepower, which necessitated the installation of cowl flaps. According to the FAA-approved Supplemental Type Certificate (STC) modification drawings, the push-pull control for the cowl flaps was required to be located to the left of the throttle console on a separate switch panel. However, in the accident aircraft, the actual location of that control was found to the right of the throttle, below the propeller control and next to another component not specified.