Abstract: A method for revising the lateral flight plan of an aircraft uses a designator and validator device connected to the flight management system of the aircraft to obtain on the ND screen of this system, in addition to a geographical representation of the flight plan selected by the pilot, a touch-sensitive area associated with each point of the ND screen and dynamically assigned function areas for constructing menus. A cursor is moved on the ND screen by action of the pilot on the designator device. The cursor can be moved to a function area or a touch-sensitive area. activating the function represented by the function area or selecting the touch-sensitive area being achieved by action of the pilot on the validator device. The method simplifies the task of the pilot who has only one display screen to monitor.