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Operations
Approach Active Operation
Approach Active Operation begins when you cross the Final
Approach Fix (FAF) inbound if an approach has been loaded and
enabled, the FAF is the active waypoint, and there are no
system-detected reasons not to continue the approach (see Message
Mode starting on page 39). The Approach Active annunciator is
illuminated for Approach Active. The CDI sensitivity is 0.3 nm for
approach active. Approach active is always preceded by Approach
Transition. At 3 nm inbound to the FAF, the Approach Active
annunciator will begin to flash. This is to alert you to the impending
automatic CDI sensitivity change. At 2 nm inbound to the FAF, the
CDI will begin a smooth change to Approach Active sensitivity which
will be reached at the FAF. At the FAF, the Approach Active
annunciator will come on solid indicating that the Apollo NMS is
providing approach guidance. As soon as you cross the FAF, the active
flight plan sequences and the Missed Approach Point (MAP) becomes
the active waypoint. Sequencing is now automatically suspended and
the OBS/HLD annunciator will be on. Anytime the Apollo NMS is in
Approach Active Operations, the approach may be canceled by
pressing the OBS/HLD button. Canceling the Approach will result in
returning to Approach Transition operation. The Approach Active
light will go out and the CDI will smoothly scale back to 1.0 nm
sensitivity. Once Approach Active has been canceled by the pilot, it
can not be made active again except by again crossing the FAF
inbound.
Verify that the Approach Active annunciator
illuminates at the FAF. If for any reason it is not on,
do NOT continue the approach.
Crossing the Final Approach Fix
1.
Important
You are now in Approach Active
operation. The Approach Active
annunciator will light continuously. If
the Approach Active annunciator is not
lighted continuously, do NOT continue
the approach.
Approach Operations
269
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