Cockpit Reference Guide

Garmin G1000 Cockpit Reference Guide for the Cessna Nav III
190-00384-08 Rev. A
SECTION 7 – NAVIGATION
7-15
a) Press the VNV PROF Softkey to place the cursor
in the target vertical speed field (VS TGT) as
shown in Figure 7-35.
b) At this point, the descent vertical speed can be
selected, or the FPA can be selected. Turn the
large FMS Knob to select the desired selection
field, then turn the small FMS Knob to enter the
desired value.
Note the information now displayed in the
‘CURRENT VNV PROFILE’ box. Also, note the
offset waypoint and a gray circle labeled ‘TOD’
are now displayed on the map. The gray circle
marks the Top of Descent (TOD). In this example,
after passing the TOD point, vertical guidance
is provided that results in a -3.0 degree FPA
descent to an altitude of 10,000 feet at the offset
waypoint.
Figure 7-35 Adjusting the Descent
c) Press the ENT Key.
15) As seen in Figure 7-36, the aircraft is approaching
TOD. Note the target vertical speed required to
reach the selected altitude. The Vertical Deviation
Indicator (VDI) and the Required Vertical Speed
Indicator (RVSI) are now displayed on the PFD as
shown in Figure 7-37.
Figure 7-36 Approaching Top of Descent (TOD)
Figure 7-37 VDI & RVSI Upon Reaching Top of Descent (TOD)
Required
Vertical
Speed
Indicator
(RVSI)
Vertical
Deviation
Indicator
(VDI)
Target
Altitude