Section 3 Display Symbology
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IDU-450 EFIS Software Version 8.0H (Rotorcraft)
1
st
Ed Nov 2018
using GPS VNAV. GPS altitude utilized to generate VDI; pilot may
follow guidance to LNAV minima regardless of temperature.
3)
LNAV Mode and VNV1-B or VNV2-B
: Default FMS barometric VNAV
mode. Using barometric altitude to generate the VDI, pilot may follow
guidance to LNAV minima as long as the specified temperature is
within limits.
4)
GS1 or GS2
: Glideslope receiver #1 or #2 as indicated. Pilot follows
guidance to published barometric DH.
Table 3-11: Vertical Deviation Indicator Behavior
Source
(Below VDI)
Behavior/Condition
Pointer
Color
FMS
Conforms to the VDI display
Magenta
Glideslope
Source must be valid when a valid
glideslope is received.
Cyan
LPV or VNAV
mode
Source is valid if:
On VNAV descent segments when
approaching the Top of Descent point
so as to provide descent anticipation
as long as the following are true:
1) On VNAV descent segments; OR
2) If the vertical deviations on VNAV
level segments option is enabled,
on VNAV level segments; OR
3) If the vertical deviations on VNAV
level segments option is disabled,
when approaching the Top of
Descent point to provide descent
anticipation;
Providing:
1) The aircraft is within 2NM or twice
the full scale deflection for the
mode of flight (whichever is
greater) of the lateral navigation
route; AND
2) The aircraft is in TO operation
relative to the active VNAV
waypoint (i.e., taking into account
VNAV offsets); AND
3) If on the final approach segment,
the aircraft is within a 35° lateral
Magenta