Flying A Dme Arc With A Gps Navigator - Garmin GFC 600 Pilot's Manual

FLYING A DME ARC WITH A GPS NAVIGATOR

The AFCS will intercept and track a DME arc that is part of the active flight plan
provided that GPS Navigation mode is engaged, GPS is the active navigation source
on the CDI, and the DME arc segment is the active flight plan leg. It is important to
note that automatic navigation of DME arcs is based on GPS. If the final approach
segment will be flown as a VOR or Localizer approach the pilot must manually change
the navigation source from GPS to VOR/LOC when the arc segment is completed. The
Flight Director will revert to ROL mode and the pilot must press the APR key to capture
and track the VOR or Localizer approach.
If the pilot decides to intercept the arc at a location other than the published IAF
(i.e. ATC provides vectors to intercept the arc) and subsequently selects Heading mode
or Roll mode, the AFCS will not automatically intercept or track the arc unless the pilot
activates the arc leg of the flight plan and arms GPS Navigation mode. If at any point
while established on the DME arc the pilot deselects GPS Navigation mode, the AFCS
will no longer track the arc.
190-01488-00 Rev. B
GI 285 Annunciating Various Approach Modes
Garmin GFC 600 Pilot's Guide
AFCS
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