Garmin G950 Pilot’s Guide for the Pilatus PC-6
190-00870-02 Rev. A
58
FLIGHT INSTRUMENTS
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL FEA
TURES
APPENDICES
INDEX
VERTICAL SPEED INDICATOR (VSI)
The Vertical Speed Indicator (VSI, Figure 2-13) displays the aircraft vertical speed using a non-moving tape
labeled at 1000 and 2000 fpm with minor tick marks every 500 fpm. The current vertical speed is displayed
in the pointer along the tape. Digits appear in the pointer when the climb or descent rate is greater than 100
fpm. If the rate of ascent/descent exceeds 2000 fpm, the pointer appears at the corresponding edge of the tape
and the rate appears inside the pointer.
A magenta chevron bug is displayed as the Required Vertical Speed Indication (RVSI; Figure 2-13) for reaching
a VNV Target Altitude once the “TOD [Top of Descent] within 1 minute” alert has been generated. Refer to
Section 2.2, Supplemental Flight Data, for more information about VNV indications on the PFD.
VERTICAL DEVIATION
NOTE:
The Glidepath Indicator is only available on GPS approaches supporting SBAS vertical guidance when
SBAS is available.
The Vertical Deviation Indicator (VDI; Figure 2-13) 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 2-14) 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 displayed in
place of the diamond.
The glidepath is analogous to the glideslope for GPS approach service levels supporting SBAS vertical guidance
(LNAV+V, LNAV/VNAV, LP, LPV, LP+V). When an approach of one of these service levels is loaded into the flight
plan and GPS is the selected navigation source, the Glidepath Indicator (Figure 2-15) appears as a magenta
diamond when the aircraft reaches a point prior to the FAF. If the approach service level changes past the final
approach fix (FAF), “NO GP” is displayed in place of the diamond.
Figure 2-13 Vertical Speed and
Deviation Indicator (VSI and VDI)
Vertical
Speed
Indicator
Scale
Required
Vertical
Speed
Current
Vertical
Speed
Pointer
VNV Target
Altitude
Vertical
Deviation
Indicator
Glideslope
Indicator
Figure 2-14 Glideslope
Indicator
Marker
Beacon
Annunciation
GIidepath
Indicator
Figure 2-15 Glidepath
Indicator