Installation manual

5-11 Navigation
ARMED VS ENGAGED/ACTIVE INDICATIONS
The active IFD nav mode is displayed in green along the right
edge of the top data strip. The armed IFD nav mode, if there is
one, is displayed in blue along that same top strip. When there is
an armed state, the nav source is depicted per the image below.
Nav Source Mode Armed and Engaged Depiction
As the armed mode is captured, the previously active nav mode
lamp will extinguish and the previously armed state will turn green
and begin to flash. The flashing should last approximately 5
seconds and the nav mode will not actually change until the
flashing stops and the indication becomes a solid lamp.
To trigger the transition from armed to active, all of the following
capture criteria must be met:
The tuned frequency in the nav radio matches that
of the approach navaid;
The Morse code decoded by the tuned nav radio
matches the identifier of the approach navaid;
The aircraft track is within 15 degrees of the final
approach course;
The course to the active waypoint is within 45
degrees of the final approach course;
The radio deviations are at most 50% of full scale
for 5 consecutive seconds;
The active leg is part of the approach up to and
including the final approach fix.