Garmin GTN 625 Pilot's Manual page 205

Altitude Constraints
NOTE: This feature is available in software v6.50 and later.
Enabling this feature displays altitude constraints from the flight plan. The
active constraint is the altitude to which VNAV is currently providing guidance.
For more information about altitude constraints, refer to section 4.3.3.
To View a Constraint
Value, Select the
Associated Waypoint
190-01004-03 Rev. P
Active Altitude Constraint
Figure 8-18 Altitude Constraints
GTN 625/635/650 Pilot's Guide
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