providing the position of the pedals and fac for acquisition the neutral position can be detected whatever the pressure of the pilot on the pedals the two and logic gates 28 and 29 are connected to an and logic gate 35 which activates the alarm means 14 so that they trigger an alarm when its output is set to 1 i e when the outputs of gates 28 and 29 are both set to 1 this situation occurs when after having reached the tlu stop the rudder 7 is returned to the neutral position gate 28 and has re exited it gate 29 doing so during a predetermined time period element 27 this alarm generated by the means 14 which are for example part of a central flight warning computer is maintained for a predetermined time period for example five seconds as illustrated by an element 36 the alarm triggered by the means 14 can manifest in the form of a visual signal emitted by signalization means 39 such as a screen leds etc receiving the command to trigger said alarm and or a sound signal emitted by sound emitting means 40 receiving the command to trigger said alarm and or yet any other type of suitable signal a sound alarm for example in the form of a double emission by a synthetic voice of a message of the type u201c stop rudder input u201d demanding the cessation of the rudder bar actuation and a visual alarm in the form of a flashing light signal additionally the inhibition means 15 comprise conditions that are transmitted to.