LNAV – Lateral Navigation Guidance

LNAV

Lateral (azimuth) Navigation Guidance. A type of navigation associated with nonprecision approach procedures or en route navigation. 
LNAV, like a conventional localizer, provides lateral approach course guidance. LNAV minimums permit descent to a prescribed minimum descent altitude (MDA). The LNAV procedure shown on the chart.

Related posts:

1. LNAV/VNAV
2. Localizer
3. Minimum descent altitude (MDA)
4. HUD – Head Up Display System
5. Supplementary Means of Navigation