This June 2009 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.
Aircraft: Waco Classic YMF-F5C. Injuries: None. Location: Pittsburg, Kan. Aircraft damage: Minor.
What reportedly happened: The private pilot was receiving instruction in a tailwheel equipped airplane. The CFI gave the pilot a simulated engine out while on the downwind leg for landing. The airplane touched down about mid-point on the runway, and during the landing roll the airplane started to turn left. The flight instructor was unable to correct the turn, and the Waco ground-looped.
Probable cause: The pilot’s loss of directional control, resulting in a ground-loop.
For more information: NTSB.gov. NTSB identification: CEN09CA395.