Method and assembly for guidance of an aircraft during a low-altitude flight

An assembly for guidance of an aircraft during a low-altitude flight, the guidance assembly comprising:

• a flight management system configured to construct a low-altitude flight trajectory corresponding to a flight plan, the flight management system being configured to construct at least one new low-altitude flight trajectory corresponding to a new flight plan;
• a data transmission unit configured to transmit the flight trajectory from the flight management system to a guidance system;
• and
• the guidance system which is configured to guide the aircraft (AC) along the low-altitude flight trajectory, termed the active flight trajectory,
• wherein:
• the guidance assembly comprising:
• at least one first memory forming part of the flight management system, the first memory being configured to store the active flight trajectory along which the aircraft is guided and any new flight trajectory;
• and
• at least one second memory forming part of the guidance system, the second memory being configured to store the active flight trajectory along which the aircraft is guided and any new flight trajectory, received from the flight management system;
• and
• the guidance assembly is configured to periodically transmit from the guidance system to the flight management system identification codes for the flight trajectories recorded in the second memory of the guidance system, each flight trajectory transmitted from the flight management system to the guidance system being identified with the aid of an associated identification code.