What does Lateral Navigation (LNAV) refer to in aviation?

Lateral Navigation (LNAV) is specifically designed to refer to the horizontal positioning aspects of flight navigation, focusing on tracking the aircraft's course along a predetermined horizontal path. This is accomplished through azimuth navigation, which covers the aircraft's direction in relation to its intended flight path. LNAV typically does not provide vertical navigation guidance, which is the responsibility of different systems that manage altitude.

The knowledge and context surrounding LNAV are important for pilots, as it allows them to follow airways and maintain course effectively. LNAV is a fundamental component of instrument flight rules (IFR) as well, aiding in precise route adherence in various weather conditions.

In summary, LNAV involves navigating laterally along a track, relying on azimuth calculations without the inclusion of altitude or vertical navigation commands, which distinguishes it from other methods of navigation used in aviation.