Garmin GPS 400 Quick Reference page 13

P
d
E
d
E
d
E
d
Approaches
Not all approaches in the database are approved for GPS use. As you
select an approach, a " G P S " designation to the right of the procedure name
indicates the procedure can be flown using the GPS receiver. Some pro-
cedures will not have this designation, meaning the GPS receiver may be
used for supplemental navigation guidance only.
A selected approach may be activated or loaded. Activating the
approach overrides the "enroute" portion of the active flight plan, pro-
ceeding directly to the "approach" portion (for a full approach, directly to
the initial approach fix). Activating the approach also initiates automatic
CDI scaling transitions as the approach progresses.
In many cases, it may be easiest to "Load" the full approach while still
some distance away, enroute to the destination airport. Later, if vectored
E
to final, use the following steps to select "Activate Vector-To-Final"—
which makes the inbound course to the FAF waypoint active. Otherwise,
activate the full approach using the "Activate Approach?" option.
E