Garmin GTN 625Xi, Pilot'S Manual

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190-02327-03 Rev. C Pilot’s Guide 3-83
INVALID ALTITUDE CONSTRAINTS
An altitude constraint is invalid if:
•
Meeting the constraint requires the aircraft to climb
•
Meeting the constraint requires the aircraft to exceed the maximum flight
path angle (6° downward) or maximum vertical speed (-4,000 fpm)
•
It results in a TOD behind the aircraft's current position
•
It is within a leg type that does not support altitude constraints
•
It is added to a waypoint past the FAF
ALTITUDE CONSTRAINT OPTIONS
Once added to the flight plan, an altitude constraint may be modified or deleted
using the controls in the VNAV Options menu. Select a value in the ALT column to
display available options.
Type
•
Opens a list of available constraint types
•
Options: At, At or Above, At or Below, and Between
Altitude Data
Entry
•
Opens a keypad. Specify an altitude value for the selected
constraint type
•
Unit options: MSL, AGL, and Flight Level
Revert
Constraint
•
Returns a modified altitude constraint to its original published
value
Remove
Constraint
•
Removes the VNAV designation from the altitude
•
Value remains displayed for reference purposes. It is no longer
used to compute vertical guidance
•
Removing the VNAV designation from an altitude may
invalidate other displayed altitudes or cause them to change
after recalculation