PRIMUSr 1000 Integrated Avionics System
A28--1146--112--00
Modes of Operation
8-12
LOCALIZER (LOC) MODE
The localizer mode automatically intercepts, captures, and tracks the
front course localizer beam to line up on the centerline of the runway
in use. Before mode engagement, the pilot performs the procedure
described in table 8--4.
Step Procedure
1 Couple either the pilot’s or copilot’s flight director to the
autopilot using the CPL button the the GC.
2 Tune the coupled side navigation receiver to the published
front course localizer frequency for the runway in use.
3 Set the course pointer on the coupled side HSI for the
inbound published localizer course.
4 Set the heading bug on the HSI for the heading to perform
a course intercept, using the GC HDG knob.
5 Push the NAV button on the coupled side DC to select
NAV as the navigation source.
6 Push the NAV button on the GC. The system annunciates
HDG in green and LOC in white.
NOTE: The APR button can also be in this step. However, when pushing
the APR button, and assuming an invalid glideslope, the NAV
button remains the only button lit. If APR is used, and the glides-
lope is valid, the FGS captures the GS at the proper time.
Localizer Mode Engagement Procedure
Table 8--4
The HSI displays the relativeposition of the aircraftto the center ofthe
localizer beam and the inbound course, as shown in figure 8--10. With
the heading bug set for course intercept, the heading select mode is
used to perform the intercept. Outside the normal capture range of the
localizer signal, pushing the NAV button on the GC annunciates LOC
on the PFD, as shown in figure 8--10.
D LOC is in white, HDG is green.
D The NAV button on the mode selector also annunciates.
D The aircraft flies the selected heading to the intercept point and the
system is armed for automatic localizer beam capture.
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