Aircraft: Beech Bonanza. Injuries: 2 Fatal. Location: Lake in the Hills, Ill. Aircraft damage: Destroyed.
What reportedly happened: A commercial pilot accompanied by a CFI was practicing touch-and-goes. The commercial pilot, 82, did not hold a medical certificate at the time of the accident. On his most recent application for a medical, he reported 18,077 hours, of which 30 had been logged in the previous six months. The CFI, 62, had approximately 7,785 hours.
At the time of the accident the wind was reported from 220° between 11 and 22 knots.
A witness on the ground reported seeing the airplane in a steep bank as it turned from the base leg to the final approach leg. The airplane crashed in the turn.
Investigators speculated that the wind encountered on the left base turn to final may have resulted in the pilot overshooting the final approach path and the steep turn was his attempt to compensate for overshooting the final approach path by increasing the bank angle to bring the airplane back on course. The wreckage was consistent with the airplane encountering a stall/spin situation.
No mechanical malfunctions or failures were found that would have precluded normal operation.
Investigators were unable to determine who was flying the airplane at the time of the accident, however, since the commercial pilot did not hold a current medical certificate he was ineligible to have been acting as pilot-in-command.
Probable cause: The pilot’s excessive bank angle while on approach to land, which resulted in an inadvertent aerodynamic stall and spin.
NTSB Identification: CEN12FA271
This May 2012 accident report is provided by the National Transportation Safety Board. Published as an educational tool, it is intended to help pilots learn from the misfortunes of others.