Garmin GPS 155XL Pilot's Manual & Reference page 137

When should I switch from HOLD to AUTO, and what happens when I do?
Once you are ready to resume automatic waypoint sequencing, you must set the
desired course on your HSI two seconds before changing the GPS SEQ switch to the
AUTO position. This allows the the desired course to 'settle' prior to the GPS 155XL
using it. Once the GPS SEQ switch is set back to the AUTO position, the GPS 155XL
will use the HSI course until you have crossed the active-to waypoint and sequenced
to the next route waypoint. See page 76 for more information on the GPS SEQ switch.
Why won't my unit automatically sequence to the next waypoint?
The GPS 155XL will only sequence approach, SID or STAR waypoints when the
GPS SEQ switch is in the AUTO position. For automatic sequencing to occur, you
must also cross the bisector of the turn you are navigating.
How do I skip a waypoint in an approach, SID or STAR?
The GPS 155XL allows you to manually select any approach, STAR or SID way-
point as your next 'active to' destination. This procedure, called an on-route direct-to,
is performed from the active route page by highlighting the desired waypoint and
pressing D, then E to approve the selection. The GPS will then provide naviga-
tion directly to the selected waypoint, so be sure you have clearance directly to that
position. See pages 59 & 72 for more information.
How do I fly the GPS with an autopilot and DG heading bug?
If you do not have an HSI, you should make your course selections on the OBS
and the DG heading bug.
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SHOOTING
Q & A
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