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Section 3 Display Symbology
1
st
Ed Nov 2018
IDU-450 EFIS Software Version 8.0H (Rotorcraft)
3-45
Table 3-16: Navigation Symbology
IFR Airport
NDB
VFR Airport
FIX
VORTAC
High Altitude
Airway
DME only or
TACAN
Low Altitude
Airway
VOR
User Waypoint
User Waypoint
in Pan Mode
HSI CDI scale
The ND has manual and automatic decluttering of navigation data. There
are six levels of automatic declutter based upon the number of navigation
data symbols drawn in the current ND format and range. Decluttering is
as follows:
1)
Airports
: Manually or automatically decluttered. In automatic declutter
mode, large airports (IFR procedure and longest runway and
automatically adjusted threshold needed to achieve desired symbol
count) are always shown; IFR airports that are not large airports are
shown in levels 1, 2, 3, and 4; and VFR airports are shown in levels 1,
2, and 3.
2)
VORs
: Manually or automatically decluttered. In automatic declutter
mode, VORs are shown in levels 1, 2, 3, 4, and 5.
3)
NDBs:
Manually or automatically decluttered. In automatic declutter
mode, NDBs are shown in levels 1 and 2. Both enroute and terminal
NDBs are shown.
4)
FIXES
(including user waypoints): Manually or automatically
decluttered. In automatic declutter mode, enroute fixes are shown in
level 1. Terminal fixes are manually selected and not shown in
automatic declutter mode. Enroute fixes, terminal fixes, and user
waypoints may be manually decluttered separately from each other.
5)
High Altitude Airways
: Manually selected.
6)
Low Altitude Airways
: Manually selected.