Faults with rudder travel limiters were involved in the crashes of Indonesia AirAsia Flight 8501 and American Airlines Flight 587 . After the latter crash Airbus changed the rudder travel limiter on the Airbus A300-600 from a variable ratio design to a variable stop design , as the latter is less complex , with less severe failure modes .
Indonesia AirAsia Flight 8501
Indonesia AirAsia Flight 8501
Rudder travel limiter