Table 3B-24. Attribute Designators (Continued)
A holding pattern has been attached to this waypoint. If the waypoint is an IAF or Missed
Approach Holding Point with a database Holding Pattern attached, this attribute is displayed
on the holding Flight Plan page when the holding pattern is enabled.
The waypoint is a valid intercept solution for a moving target.
The waypoint is designated as the Missed Approach Point (MAP).
This waypoint is a fix for a pattern that will be executed upon arrival at the point.
This waypoint is part of a STAR.
This waypoint is part of a SID.
The waypoint has a desired time of arrival associated with it. This indicates that a Time
Navigation (TNAV) function will be performed to obtain the Required Time of Arrival (RTA) on
the Flight Plan Waypoint page.
The waypoint has an altitude specified that will cause vertical navigation to be performed.
Up to three attributes can be assigned to each
waypoint. Attribute hierarchy and possible attribute
combinations are shown in Table 3B-25. Attributes
within each column of the table can not be assigned to
the same waypoint.
Table 3B-25. Attribute Hierarchy
The right-most column of attributes shown
in this table is deleted first when used in
combination with other listed attributes.
waypoints beyond the active waypoint are in the flight
plan and the flight plan advance mode is automatic
(AUTO or FLYOVER mode), the FMS-800 computes
great circle tracks between those waypoints. It will
also, automatically transition smoothly from one
waypoint to the next.
To sequence past a waypoint, the aircraft track
angle must be within 90° of the active leg course; the
Track Angle Error (TKE) must be within 90°.
Otherwise, sequencing will be inhibited and guidance
will continue to reference the inbound course to the
To prevent overshoot of the next leg, automatic
leg switching in AUTO mode includes turn anticipation,
up to 30 nm prior to the waypoint, for course changes
150°. Over 150°, the waypoint will be overflown and
a teardrop turn is made to intercept the next leg. Refer
to Figure 3B-32.
When the change in the resulting course
between flight plan legs is greater than
150°, the FMS will provide guidance to turn
and intercept the next course, resulting in
an S-turn maneuver into the course. The
course to the next waypoint is based on
geometry between waypoints, not waypoint
course guidance, for smooth turns.
When the pilot has selected the FLYOVER
mode, leg switching is also automatic, but each
waypoint is overflown prior to turning to intercept the
Prior to the leg switch point, the waypoint alert
light illuminates and the waypoint number on the Flight
Plan page and the ¯ to ¯ indicator on the Lateral Steer
page will flash for 10 seconds.
When the MAP becomes the active waypoint,
sequencing is automatically inhibited as the sequence
mode is switched to MAN. On the TO side of the
MAP, pilot selection of AUTO sequencing is inhibited;
AUTO can be selected on the FROM side of the MAP.
A Direct-To any waypoint other than the MAP will
switch sequencing back to AUTO.