Patent ID: 8190309

Claim:
A method of detecting lateral dissymmetry of an aircraft, the method comprising the steps of: a) determining, by a control parameter determination unit, a current value of a control parameter representative of all roll control surfaces of the aircraft; b) comparing, by a control parameter comparison unit, the determined current value of said control parameter with a predetermined reference value; c) determining, by deflection angle determination unit, a current deflection angle of a lateral stick of the aircraft, wherein the lateral stick is operated by a pilot of the aircraft to control said roll control surfaces; d) comparing, by a deflection angle comparison unit, the determined current deflection angle of the lateral stick with a predetermined angle value; and e) outputting a visual alarm signal to at least one display screen of a cockpit of the aircraft, under a condition in which both: 1) the determined current value of the control parameter is greater than the reference value and 2) the determined current deflection angle of the lateral stick is greater than the predetermined angle value, to signal the detection of lateral dissymmetry of the aircraft.