Primary Flight Display Symbols

Localizer and Glideslope Scales and Indices

The Localizer and Glideslope Scales and Indices Scales appear when ILS/LS button is selected ON. Indices appear when localizer and glideslope signals are valid if scales are displayed. Half index displayed at the end of scale when the signal is received but the index is out of the displayed range.

Localizer scale and index flash continuously when LOC is engaged and the deviation exceeds 1/4 dot above 15 feet RA.

Glideslope scale and index flash continuously when G/S is engaged and the deviation exceeds 1 dot above 100 feet RA.