Under normal operation, the FMS will automatically
configure the FMS for the current mode of flight,
APPROACH. If a different flight mode is desired,
including OCEANIC, select the FLT MODE line select
to activate the desired mode. The flight mode not only
affects the scaling of deviation pointers, but also sets
the limits of the GPS RAIM function and navigation
accuracy limits. The system bank limit can be entered
on the Navigation Configuration 1 page. The bank
limit applies to FMS guidance during execution of the
Figure 3C-30. Navigation Configuration Page
Access and Functions
Table 3C-22. Navigation Configuration Page
Access and Functions Procedure
Select index 1 page.
Access Nav Config 1 page.
Indication of pilot selection.
Flight Plan Guidance-Bank 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).
(e) External Alert Configuration. On the
Navigation Configuration 2 page, alert thresholds can
be entered to configure the FMS alerts to desired limits
that the pilot wishes to maintain. When the FMS
annunciation or external alert is provided to advise the
pilot. When crosstrack deviation is exceeded, an XTK
ALERT annunciation is provided until the aircraft is
maneuvered back into desired limits. When the speed
of the aircraft exceeds the speed alert limits, a
SPEED annunciation is provided until the aircrafts
speed is throttled back within limits.
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 en route to each destination in
the flight plan.