SPZ--8000 Digital Integrated Flight Control System
A28--1146--055
REV 2
Modes of Operation
8-32
At localizer capture, the EADI annunciates:
D LOC
D GS (white)
D Any other active vertical mode in green
D The LOC annunciator flashes for 5 seconds to indicate capture
mode.
The flight guidance computer generates a roll command to smoothly
capture and track the localizer signal.
The glideslope portion of the approach mode, shown in Figure 8--26,
automatically intercepts, captures, and tracks the glideslope beam. The
beam guides the aircraft down to the runway in a linear descent. Typical
glideslope beam angles vary between 2 and 3, dependent upon local
terrain. When the glideslope mode is used for vertical guidance and the
localizer is used for lateral guidance, the aircraft flies a fully coupled ILS
approach. The mode is interlocked, so that glideslope capture is
inhibited until localizer capture has occurred.
Approach Mode Capture Profile
Figure 8--26
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