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GNS 530(A) Pilot’s Guide and Reference
190-00181-00 Rev. H
SECTION 6
PROCEDURES
6-32
6.4 POINTS TO REMEMBER FOR ALL
APPROACHES
• The GNS 530 is designed to complement printed
approach plates and vastly improve situational
awareness throughout the approach. However,
the pilot must always fly an approach as it appears
on the approach plate.
• The active leg (or the portion of the approach
currently in use) is depicted in magenta on the
Map Page. When ying the approach, the GNS
530 automatically sequences through each leg
of the approach unless ‘SUSP’ appears above
the OBS Key. ‘SUSP’ indicates that automatic
sequencing of approach waypoints is suspended
on the current leg and normally appears at
holding patterns and upon crossing the missed
approach point (MAP).
Points to Remember for Localizer-based
Approaches
• The default factory setting allows the CDI output
to automatically switch from the GPS receiver
to the VLOC receiver. If the ‘ILS CDI Capture’
setting is changed to ‘Manual’, the pilot must
determine when to select GPS or VLOC guidance
during the approach. Remember, VLOC is
required for the final course segment from final
approach x (FAF) to MAP.
• If the CDI output has not automatically switched
from GPS to ILS by 2.0 nm prior to the FAF, the
pilot must manually switch to the VLOC receiver
by pressing the CDI Key. Verify that ‘VLOC’ is
displayed directly above the CDI Key.
• Automatic switching of CDI output is available
for ILS, localizer, SDF, and LDA approaches.
Automatic CDI switching is not available for
backcourse approaches.
• When ying an approach with the autopilot
coupled, the pilot must monitor system functions
at all times and verify that the autopilot and
external CDI (or HSI) switches to the VLOC
receiver with sufficient time to capture and track
the approach course. Switching to VLOC late
in the approach may not provide the autopilot
enough time to respond and intercept the
approach course prior to the FAF (depending
upon the performance characteristics of the
autopilot and aircraft). In such cases, the pilot
should manually fly the approach or refer to the
documentation provided with the autopilot.