IFD400 Series Pilot Guide
Navigation 5-9
OBS MODE
“PUSH OBS” is the label underneath the knob (or the button label
in the case of IFD410) and is active when you can put the system
in To/From course setting mode for a waypoint. There is no need
for “suspend” functionality in the IFD paradigm – the IFD will
continue sequencing to the next waypoint and exit OBS mode at
that time.
NOTE
GPS and OBS
If GPS or OBS are not the active Nav state
(annunciated in green), then pushing the Nav
Source knob will have no effect. When one of them
is the active Nav state, pushing the Nav Source
knob will toggle between the two states.
NOTE
OBS Can Not Be Activated Inside the FAF
OBS is prevented from being selected on a
published approach when inside the Final Approach
Fix (FAF).
When in OBS mode, the depiction on the map will vary depending
upon whether the system has determined the airplane to be in TO
or FROM orientation.
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