Each antenna transmits a narrow beam. Localizer (LOC) and glide slope (G/S) carrier frequencies are paired so that the navigation radio automatically tunes the G/S frequency which corresponds to the selected LOC frequency. The LOC signal is in the 110 MHz range while the G/S signal is in the 330 MHz range.

What is a localiser approach?

Introduction. A localizer approach is a non-precision approach that provides a pilot with azimuth (lateral) guidance to the landing runway. A localizer approach can be a stand-alone localizer or it can be associated with an ILS Approach.

How does a localizer approach work?

To fly an ILS, you first align your aircraft with the runway, using the localizer as guidance. ... You then fly toward the runway and intercept the glideslope from underneath, so you don't intercept a false glideslope. After you intercept the glideslope, you start a gradual, (typically) 3 degree descent toward the runway.