2003–The NTSB cited the flight instructor’s inadequate supervision of the flight of Grand Aire Express’s Falcon 20 N183GA, while practicing ILS approaches in IMC with low clouds and rime ice, for causing the airplane to crash. The Board also noted “his failure to maintain an approach airspeed consistent with the airplane’s configuration, which resulted in an aerodynamic stall due to slow airspeed and subsequent uncontrolled descent into trees. Factors were the icing conditions, the flight instructor’s failure to turn on the wing and engine anti-ice and his lack of experience as an instructor pilot.”
The instructor, acting as pilot-in-command and flying from the left seat, was the company’s chief pilot/check airman/designated flight instructor. A first officer in training occupied the right seat. On the second approach to Toledo Express Airport, the airspeed decreased from 188 knots to 141 knots at the outer marker and continued to decrease to 106 knots, when the airplane entered an abrupt descent and disappeared from radar. The airplane struck trees and burned 1.57 nm from the approach end of the runway. The two pilots and a passenger were killed and the aircraft was destroyed.
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