Garmin G1000 NXi Reference Manual page 104

Flight Management
White Text
Altitude calculated by the system estimating
the altitude of the aircraft as it passes over the
navigation point. No white line above or below to
indicate a potential constraint.
Altitude retrieved from the navigation database.
White line above or below indicates the type of
as shown in the preceding figure.
These altitudes are provided as a reference, and
are not designated to be used in determining
vertical guidance.
An altitude constraint is invalid if:
• Meeting the constraint requires the aircraft to climb
• Meeting the constraint requires the maximum flight path angle or maximum
vertical speed to be exceeded
• The altitude constraint results in a TOD behind the aircraft present position
• The constraint is within a leg type for which altitude constraints are not
supported
• The altitude constraint is added to the FAF of an approach that provides vertical
guidance (i.e., ILS or GPS SBAS approach)
• The altitude constraint is added to a waypoint past the FAF
Altitude constraints can be modified or deleted after having been added to the
flight plan. In the event an altitude constraint is deleted and the navigation database
contains an altitude restriction for the lateral waypoint, the system displays the altitude
restriction from the database provided no predicted altitude can be provided. The
system also provides a way to reinstate a published altitude constraint that has been
edited.
78
Garmin G1000 NXi Cockpit Reference Guide for the Cessna NAV III
5OOO
FT
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constraint,
Cyan Text
Altitude is designated for use in
determining vertical guidance. A pencil
icon indicates manual designation or
manually edited data entry.
The system cannot use this altitude in
determining vertical guidance because of
an invalid constraint condition.
190-02178-02 Rev. A