Normal Display

The localizer deviation pointer and scale show at the bottom of the attitude display. The scale is a standard four dot scale. One dot equals 1 degree of deviation. The deviation indication shows deviation to the left or right of the runway centerline. The localizer scale shows in white and the localizer pointer shows in magenta.

The localizer scale can show the standard display or the expanded scale. A two-dot expanded scale can replace the four-dot scale. For the expanded scale, each dot equals 0.5 degrees of deviation. The white expanded scale goes to amber and flashes when the autopilot sends an ILS deviation warning.

The expanded scale shows for these conditions:

· LOC deviation is less than 5/8 dot

· LOC or APP mode is engaged

· ILS course and the airplane track are within 5 degrees of each other

· An autopilot is in CMD.

 

The glideslope deviation pointer and scale show to the right of the attitude display. The scale is a standard four-dot scale. One dot equals 0.35 degrees of deviation. The pointer gives fly-to commands to intercept the glideslope beam. The glideslope scale shows in white and the glideslope pointer shows in magenta. There is no expanded scale for glideslope deviation. The ILS station frequency and course show above and to the right of the ADI. If the ILS ground station transmits a morse coded station identifier, the stations letter identifier replaces the numeric frequency display when the receiver captures the signal.








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