Table 3B-16. Navigation Configuration Page
Access and Functions
Select Index 1 page.
Access Nav Config 1 page.
Indication of designated pilot selection.
Flight Plan Guidance-Blank Limit.
Flight instrument scaling mode selection:
OCEANIC, EN ROUTE, TERMINAL, or
Entered Speed deviation alert threshold
calculations while on the ground.
Entered waypoint alert time in seconds
prior to waypoint arrival or leg switch.
threshold (nautical miles).
When a waypoint alert time is entered, the FMS
will provide an external waypoint alert advisory and
then the FMS will sequence to the next waypoint with
the alert threshold. This waypoint alert threshold only
affects external advisories on capsule lights or flight
instruments to give the pilot a heads-up of impending
transitions while in OCEANIC or EN ROUTE flight
modes. When in TERMINAL or APPROACH modes,
the FMS and external advisories will always be
generated 10 seconds prior to waypoint sequencing.
(f) Ground Calculation. When on the
ground, the FMS provides the pilot the ability to review
flight profiles and system calculations. On the
Navigation Configuration 2 page while on the ground,
a groundspeed entry is provided for the pilot to
forecast anticipated performance in flight and provide
expected flight times enroute to each destination in the
e. Active Flight Plan Waypoints and Courses.
(1) Flight Plan Overview. The active flight
plan is a list of up to 60 waypoints, stored in the order
they are to be flown. The flight plan is maintained
waypoints. When a waypoint is passed, it is retained
in the flight plan history list, where the last 39 passed
waypoints are maintained in order. History waypoints
are identified in the flight plan with a # symbol
following the waypoint number and may be viewed by
scrolling the Flight Plan page using the - key. The
crew may delete history waypoints, using a entry, but
may not enter waypoints into history.
The FMS-800 guidance function assists in
execution of the flight plan by determining deviations
from the desired flight plan and controlling the
sequencing of waypoints. When automatic leg
advance is selected via the Flight Plan page, waypoint
switching is determined as a function of aircraft speed,
wind, and magnitude of course change to provide turn
anticipation. A waypoint alert is generated prior to
reaching the waypoint switching point for the next leg.
(a) Flight Plan Loading. There are three
ways to enter flight plan data:
1. Through the active flight plan.
2. The alternate flight plan.
3. The data cartridge catalog.
(b) Data Cartridge. The data cartridge is
a storage device containing a catalog of Alternate
Flight Plans (AFP). The cartridge can be modified at a
Mission Planning Ground Station (MPGS) which can
store thousands of unique flight plans. Up to 40 of
those flight plans at one time can be transferred from
the MPGS to the Alternate Flight Plan Catalog in the
data cartridge. The pilot can then choose one of these
AFP's from the catalog on the data cartridge to load
into the AFP in the CDU. After loading the AFP, the
pilot can make any changes or transfer the AFP
directly to the active flight plan. If desired, the pilot can
also modify an AFP and save it back to the catalog in
the cartridge. Refer to Figure 3B -25 for a summary of
the information flow.
(2) Flight Plan Active Waypoint. The
waypoint that all flight instrument and CDU guidance
displays are referenced, is referred to as the active
waypoint. Pressing the FPLN key on the CDU
accesses the Flight Plan page with the active waypoint
displayed as the TO waypoint. This is signified by ¯¯
pointing to the active waypoint.
Associated with the active waypoint are the
following parameters, which are displayed on the
Flight Plan page.
measured at the waypoint, not current
desired track at aircraft position.
2. Source of inbound course. The three
manually entered (¯ man ¯ ), or direct-
to (¯ dir ¯ ).