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PRIMUS
r
1000 Integrated Avionics System
A28--1146--112--00
8-23
Modes of Operation
As the aircraft approaches the glideslope (GS) beam, as shown in
figure 8--18, the vertical beam sensor (VBS) monitors TAS, vertical
speed, and GS deviation to determine the correct capture point. At
glideslope capture, the computer drops any other vertical mode that
was in use, and automatically generates a pitch command to track the
glideslope beam.
AD--50989@
ILS Approach Mode Glideslope Capture, Profile View
Figure 8--18
The PFD shown in figure 8--19, annunciates:
D
LOC in green
D
GS in green. The annunciation is enclosed in a white box for 8
seconds.
The NAV and APR mode selector buttons are also annunciated on the GC.
NOTE:
The autopilot must be disengaged before reaching 200 feet
(CAT I) above ground level (AGL).