GNC 420(A) Pilot’s Guide and Reference
SECTION 6
PROCEDURES
6-22
Figure 6-62 Default NAV Page
Figure 6-63 Map Page
3) At 13.0 nm from the FAF, a waypoint alert
(‘NEXT DTK 265°’) appears in the lower right
corner of the screen. Turn to intercept the final
approach course and watch for the CDI needle
to begin to center.
4) When approaching the intermediate fix (CF25),
a waypoint alert (‘NEXT DTK 265°’) appears.
5) Within 2.0 nm of the FAF (THERO), the GNC
420 switches from terminal mode to approach
mode. ‘APR’ appears in the lower left corner
of the screen—replacing ‘TERM’. CDI scaling
is tightened from 1.0 to 0.3 nm, full scale
deflection.
6) When approaching the FAF, ‘NEXT DTK 265°’
appears in the lower right corner of the
screen.
7) After crossing the FAF, the destination
sequences to the MAP (MA25).
8) When approaching the MAP, a waypoint alert
(‘APPRCHING WPT’) appears in the lower right
corner of the screen.
9) After crossing the MAP, ‘SUSP’ appears
above the
OBS
Key, indicating that automatic
sequencing of approach waypoints is suspended
at the MAP. If a missed approach is required,
use the
OBS
Key to initiate the missed
approach sequence, as outlined below.
190-00140-20 Rev. K
Summary of Contents for GNC 420A
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