4-27
190-01004-03 Rev. P
GTN 625/635/650 Pilot’s Guide
FPL
4.3.3.4
Altitude Constraints
NOTE:
Altitude constraints loaded from the database are jet altitudes.
Some adjustment may be necessary for other types of aircraft. For the
adjustment procedure, refer to the published chart.
Depending on the specific instance, altitude constraints are either manually
entered into the Active Flight Plan page, or automatically retrieved from the
published altitudes in the navigation database.
Constraint values display in MSL or flight level (FL). Constraints at airports
may be specified as MSL or AGL.
White Text Only
(No Constraint)
Cyan Text with Restriction
Bars and Pencil Icon
(Modified Constraint)
Cyan Text with Snowflake Icon
(Constraint with Temperature
Compensated)
Figure 4-47 Waypoint Altitude Constraints
The system automatically uses altitudes loaded with arrival and approach
procedures (up to and including the FAF) for computing vertical deviation
guidance. These values, accompanied by an altitude restriction bar(s), display
in cyan. The position of the value (above or below the bar, or between two
bars) denotes the required aircraft altitude relative to that constraint. Dual values
annunciate when the aircraft needs to cross between two altitudes.
Cross At or Above
5,000 ft
Cross At or Below
5,000 ft
Cross At 5,000 ft
Cross Between
5,000 ft and 6,000 ft
Figure 4-48 Altitude Constraint Examples
Summary of Contents for GTN 625
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