stabilizer has become mandatory for all newly homologated Le Mans Prototypes. Some Formula 1 teams utilized a vertical stabilizer as a way to disrupt the airflow to the rear wing reducing drag, the most radical system being the "F-duct" found in the 2010 McLaren MP4-25 and Ferrari F10. On demand by the driver, this system diverted air from a duct in the front of the car through a tunnel in the vertical fin onto the rear wing to stall it and reduce drag on the straights on which downforce was not needed. The system was banned for the 2011 Formula 1 season. See also Japan Airlines Flight 123, which crashed after suffering near-total loss of its vertical stabiliser References Aircraft tail components