Section 2 System Overview
1
st
Ed Nov 2018
IDU-450 EFIS Software Version 8.0H (Rotorcraft)
2-21
GRAY
as background for airspeed and altitude readout and for
conformal runway depiction (light gray for usable portion of active
runway, dark gray for other runway surfaces).
GREEN
(light green for visibility) for VOR #2 and to indicate
normal or valid operation (airspeed, altitude tape coloring, status
indication, engine, etc.). Examples:
Aircraft ground track
Skyway
symbology
Airspeeds in green arc
DARK GREEN
for terrain indication on moving map. The slope
between adjacent terrain determines the shade used.
AMBER (YELLOW)
identifies conditions requiring immediate pilot
awareness and possible subsequent action.
OLIVE
in various shades shows terrain within 2000’ and below
aircraft altitude.
BROWN
in a variety of shades indicates earth/terrain portion of
PFD or when above 100 feet less than aircraft altitude on MFD.
BLUE
in a variety of shades indicates sky portion of PFD, bodies
of water on moving map, and advisory text on black background.
RED
indicates aircraft limitations or conditions, which require
immediate pilot action, or a device failure (red “X”).
BLACK
for field of view angle lines on moving map, figures on a
gray background, and outlining borders and certain
figures/elements on backgrounds with minimal contrast, e.g.,
airspeed, altitude, and menu tiles on the PFD/MFD.
2.5 Warning/Caution/Advisory
System
The IDU has an integrated audio/visual warning system, which monitors a
wide variety of parameters and provides alerts for conditions that demand
pilot action or awareness.
Each transmit enabled IDU provides the following alerts:
