Avidyne IFD550 Pilot's Manual page 81

TIPS AND TECHNIQUES
Adjustable Field of View on Final Approach
Use the bottom right bezel knob to zoom the SynVis
scene in during instrument approaches to get a
temporary close-in look of the landing runway. The
current field of view setting is displayed in the knob
label when something other than 45° and pressing
the knob will immediately restore the scene to the
default value. Be wary of leaving the field of view at
the upper or lower ends of scales for long due to
potential visual cue confusion (e.g. things may be
much closer or further than they appear).
If the IFD is configured to automatically enable the missed
approach procedure in the FMS or it has been manually enabled
inside the FAF, then the first leg of the published missed with be
displayed in the alternating magenta/white depiction and the
Enable Missed LSK will be removed. Since the SynVis scene will
only depict the active and next legs to prevent excessive clutter,
the follow-on missed approach legs are not depicted but are still
visible on the 2D map page/view.
Enabled Missed Approach
IFD500 Series Pilot Guide
SVS Subsystem 2-15