190-00726-00 Rev. J
Garmin G900X Pilot’s Guide
71
FLIGHT INSTRUMENTS
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STEM
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FLIGHT
INSTRUMENTS
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AUDIO P
ANEL
& CNS
FLIGHT
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GEMENT
HAZARD
AV
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ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
VERTICAL DEVIATION
NOTE:
The Glidepath Indicator is only shown for aircraft with GIA 63W Integrated Avionics Units when SBAS
is available.
The Vertical Deviation Indicator (VDI; Figure 2-14) is a magenta chevron indicating the baro-VNV vertical
deviation when Vertical Navigation (VNV) is being used. The VDI appears in conjunction with the “TOD within
1 minute” alert. The VDI is removed from the display if vertical deviation becomes invalid. See the Flight
Management Section for details on VNV features, and refer to Section 2.2, Supplemental Flight Data, for more
information about VNV indications on the PFD.
The
Glideslope Indicator (Figure 2-15) appears to the left of the Altimeter when an ILS frequency is tuned in
the active NAV field. A green diamond acts as the Glideslope Indicator, like a glideslope needle on a conventional
indicator (except it does not appear during a localizer back course approach). If a localizer frequency is tuned
and there is no glideslope, “NO GS” is displayed in place of the diamond.
The glidepath is analogous to the glideslope for GPS approaches supporting SBAS vertical guidance (LNAV+V,
L/VNAV, LPV). When an approach of this type is loaded into the flight plan and GPS is the selected navigation
source, the
Glidepath Indicator (Figure 2-16) appears as a magenta diamond during the approach. If the
approach type downgrades past the final approach fix (FAF), “NO GP” is displayed in place of the diamond.
Full-scale deflection (two dots) is 1000 feet.
Glidepath
Indicator
Figure 2-16 Glidepath Indicator
Vertical
Deviation
Indicator
Required
Vertical
Speed
Vertical
Speed
Pointer
Vertical
Speed
Indicator
VNV Target
Altitude
Figure 2-14 Vertical Speed and
Deviation Indicators (VSI and VDI)
Glideslope
Indicator
Marker
Beacon
Annunciation
Figure 2-15 Glideslope Indicator
