On the Navigation Configuration page, the crew
may enter parameters for the waypoint alert and cross
track deviation threshold. Entering the number of
seconds for the waypoint alert will set an alert
annunciations on capsule lights or flight instrument
For cross track alerts, entering a value (in
nautical miles) for the cross track annunciation will
trigger an XTK ALERT when the cross track deviation
exceeds the entered threshold value. This alert is
inhibited during turns from one leg to the next.
(e) Selection of Flight Mode. On the
Navigation Configuration page, the current mode of
flight can be selected. The mode selection affects the
lateral steering scaling and integrity determination of
the GPS and INU/GPS navigation solutions. When
powered up, the FMS defaults to TERMINAL mode
until the aircraft has left the 30 nm terminal area
around the origin airport. When the aircraft comes
within 30 nm of the destination airport, the FMS
automatically transitions back to the TERMINAL mode.
When the aircraft reaches the Final Approach Fix
approach, the FMS automatically
transitions to the APPROACH mode. Each flight mode
can be manually overridden on the Navigation
(7) Oceanic Reporting Function. The FMS-
800 provides an oceanic flight position reporting and
trip log function to simplify crew procedures for these
(a) Data Access and Display. To view
the Oceanic Mission page, press the mission (MSN)
function key on the CDU. Select the Oceanic line key
to display the Oceanic Reporting page. Refer to
Figure 3C-45 and Table 3C-36. This page shows the
current flight plan waypoints in sequence with each
waypoints respective ETA (for future waypoints) or
Actual Time of Arrival (ATA) (for history waypoints).
These may be read and reported without additional
paging. A typical position report includes the time
passing the most recent reporting point and the ETAs
of the next three reporting points in UTC. The
calculation of the active waypoints ETA is based on
current true airspeed and wind. All subsequent
waypoint ETAs are calculated using current airspeed
and either the current default or pilot-entered leg wind
for subsequent legs.
Each time a waypoint is passed into history, the
ATA is recorded by the FMS. To view this trip log of
waypoint passage times, scroll the list upward to view
the history waypoints and their ATAs. If waypoints
have been bypassed via a Direct-To operation, dashes
are displayed for the ATA.
Figure 3C-45. Oceanic Mission Pages
Table 3C-36. Oceanic Mission Pages
Press Mission Function Key - MSN.
Select OCEANIC page.
FROM waypoint (ATA).
TO waypoint (ETA).
Subsequent waypoints (ETA).
Waypoint ATAs or ETAs.
Waypoint positions or IDs.
A # indicates the waypoint is a history