System for automatically controlling lift-enhancing devices of an aircraft, in particular wing leading edge slats

A system for automatically controlling lift-enhancing devices (12, 13) of an aircraft (2), in particular wing (4) leading edge slats (12), which are able to be deployed and retracted, said system (1) comprising:

• actuation means (14), for moving said lift-enhancing devices (12, 13), as a function of control orders received;
• at least one control member (16) able to be actuated by a pilot of the aircraft (2);
• and
• a control unit (17) which comprises a control means (18) which is able to produce control orders, as a function of the actuation of said control member (16), so as to control said means of actuation (14) so that the latter bring said lift-enhancing devices (12, 13) into a determined position,
• wherein said control unit (17) furthermore comprises:
• a first device (19) able to produce, automatically, auxiliary control orders which are transmitted to said actuation means (14) so as to automatically retract said lift-enhancing devices (12, 13), when the aircraft (2) is in a first flight condition;
• and
• a second device (20) for automatically disabling control orders produced by said control means (18) following actuation of said control member (16) so as to deploy said lift-enhancing devices (12, 13), when the aircraft (2) is in a second flight condition.