Garmin G1000 Socata TBM 850 - Manual (Page 67)

190-00709-00 Rev. A Garmin G1000 Pilot’s Guide for the Socata TBM 850 2-13
FLIGHT INSTRUMENTS
VERTICAL DEVIATION
NOTE: The glidepath Indicator is only shown for aircraft with GIA 63W Integrated Avionics Units when
WAAS is available.
The Vertical Deviation Indicator (VDI; Figure 2-20) uses a magenta chevron to indicate the baro-VNV vertical
deviation when Vertical Navigation (VNV) is being used; the VDI appears in conjunction with the “TOD within
1 minute” alert. Full-scale deflection (two dots) is 1000 feet. The VDI is removed from the display if vertical
deviation becomes invalid. See the Flight Management and AFCS sections 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 2-21) appears to the left of the Altimeter whenever 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. If a localizer frequency is tuned and there is no glideslope, “NO GS” is annunciated.
The glidepath is analogous to the glideslope for GPS approaches supporting WAAS vertical guidance (LNAV+V,
LNAV/VNAV, LPV) and is generated by the system to reduce pilot workload during approach. When an approach
of this type is loaded into the flight plan and GPS is the selected navigation source, the Glidepath Indicator
(Figure 2-22) appears as a magenta diamond. If the approach type downgrades past the final approach fix
(FAF), “NO GP” is annunciated.
Glidepath
Indicator
Figure 2-22 Glidepath Indicator
Glideslope
Indicator
Marker
Beacon
Annunciation
Figure 2-21 Glideslope Indicator
Vertical
Speed
Indicator
Vertical
Speed
Pointer
Required
Vertical
Speed
VNV
Target
Altitude
Vertical
Deviation
Indicator
Figure 2-20 Vertical Speed and
Deviation Indicators (VSI and VDI)