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Section 3 Display Symbology
1
st
Ed Nov 2018
IDU-450 EFIS Software Version 8.0H (Rotorcraft)
3-31
3.3.25. No Autopilot or Fully-Integrated Autopilot Course Deviation
Indicator
Without Autopilot
With HeliSAS-E
Figure 3-54: CDI No Autopilot or Fully-Integrated Autopilot
In an installation without an autopilot or with a fully integrated autopilot (e.g.,
HeliSAS-E), the heading/roll-steering sub-mode annunciation is not
meaningful and should be decluttered from the CDI display. Therefore, the
shaded background of the CDI only falls behind the CDI scale. An
abbreviated navigation source annunciation (without “NAV:”) appears
above the top left corner of the CDI scale. The heading/roll-steering sub-
mode annunciation does not appear, as it is not required with autopilot
mode annunciations or when an installation does not include an autopilot.
3.3.26. Vertical Deviation Indicator
Figure 3-55: Vertical Deviation Indicator
The vertical deviation indicator (VDI) on the right side of the PFD displays
vertical deviation for the selected vertical navigation source to display
descent profile but disappears in unusual attitude mode.
1)
LPV Mode and LPV1 or LP V2
: When descending on the final
approach segment in LPV mode. GPS altitude utilized to generate VDI
; pilot may follow guidance to LPV minima regardless of temperature.
2)
LNAV Mode and VNV1-G or VNV2-G
: When descending on the final
approach segment in LP, LNAV/VNAV, and LNAV or RNP modes when