Which of the figures depicts an Electronic Flight Instrument System (EFIS) display in plan mode?
A navigation Display (ND) provides a mode selectable flight progress display. The different display modes of the ND are the following:
- EXPANDED, MAP, or ARC mode: an expanded view of the compass rose, with the current heading at the top (“heading-up orientation”)
- VOR, FULL VOR, or ROSE VOR mode: the entire compass rose in a heading-up orientation.
- APP or ROSE ILS mode: the entire compass rose in heading-up orientation, with only the ILS localiser visible, an additional glide slope indication appears to the right
- PLAN mode: the upcoming flight plan waypoints are depicted in a “north-up” orientation, the display range can be adjusted.
- Is it a Full-Rose (360° compass rose displayed) or an Expanded Mode (90° of the compass rose displayed with ±45° either side of the centerline)?
- Is it a VOR/ILS mode or a NAV mode? The VOR/ILS mode will simply have the VOR or ILS transmitter frequency, course, and deviation scales displayed on the top right-hand corner of the ND, whereas the NAV mode will only display the TO waypoint, the distance, and the time to that waypoint.
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