Garmin GPS 400 Quick Reference page 15

Approaches / Missed Approach
• For GPS-based approaches, receiver autonomous integrity monitor-
ing (RAIM) will monitor satellite conditions and alert you—using an
"INTEG" annunciation at the bottom left corner of the display (see
page 10)—if protection limits cannot be maintained. If this occurs,
the GPS receiver cannot be used for primary navigation guidance, a
missed approach should be initiated and select either 1) an alternate
navigation source for another approach to the same airport, or 2) an
alternate airport.
• Within 30 nautical miles of the destination airport, CDI scaling will
transition from 5.0 nautical miles (enroute mode; or "ENR") to 1.0 nau-
tical mile (terminal mode; or "TERM")—or when leaving the departure
airport, from 1.0 nm to 5.0 nm. Within 2.0 nautical miles of the final
approach fix, GPS-based approaches will see a second transition from
1.0 nautical mile to 0.3 nautical mile (approach mode; or "APR")
• A "PROC TURN OK" prompt will appear in the lower right corner of
the display to advise you when you are at a safe distance to initiate a
procedure turn. The procedure turn is displayed on the map page,
but guidance through the turn itself is not provided.
• Alerts for proper holding pattern entry (e.g. "HOLD DIRECT") are
displayed in the lower right corner of the display. Waypoint sequenc-
ing is automatically suspended (indicated by "SUSP" directly above
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the key) at the holding waypoint. Press the
return to automatic waypoint sequencing. For course reversals, way-
point sequencing is suspended for one trip around the holding pattern
only (after which it will return to automatic waypoint sequencing).
• The CDI will guide you through a DME arc. Just keep the needle
centered as you fly along the arc. When using an autopilot, the course
select on the CDI (or HSI) must be periodically updated with the
desired track (DTK).
• As you cross the missed
approach point, "SUSP" will
appear above the
indicating
sequencing of waypoints is
suspended at the missed approach point, and a "from" indication will
appear on the CDI (or HSI).
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key again to
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key,
that automatic
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P
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