Deland Muni-Sidney H Taylor Fi Airport
Aircraft Accident/Incident Report

Deland, Florida 32724
Wednesday, July 19, 2006 14:29 EDT

The first pilot, a certificated flight instructor, was providing flight instruction to the second pilot in a multi-engine airplane. After completing a series of flight maneuvers, the instructor reduced power on the right engine to simulate a failure on that engine. The instructor then told the second pilot, a private pilot training for a multi-engine rating, to make a simulated single-engine emergency landing at the nearest airport. While on approach to the runway, as the airplane passed through about 100 feet agl, the single-engine approach became "unstable" and the instructor told the second pilot to discontinue the approach and go-around. The second pilot applied full power to both engines, but according to the pilots, the right engine did not produce full power, and the airplane veered sharply to the right. The instructor then took control of the airplane, and reduced power on the left engine in an attempt to correct the veer. As the airplane neared the departure end of the runway, it descended and collided with grass-covered terrain. The airplane sustained substantial damage to the wings, fuselage, and empennage. Postaccident inspection disclosed no evidence of any preaccident mechanical anomalies. The right engine was removed and inspected, and placed on an engine test stand. It was operated at various power settings for an extended period. The engine operated without incident, and produced its maximum rated rpm.

The flight instructor's inadequate supervision of the dual student during final approach to land, and his delayed remedial action following a partial loss of engine power on one of the two engines. Factors associated with the accident are the dual student's unstabilized landing approach, and the partial loss of power on one engine.