Garmin G1000 Reference Manual page 114

SECTION 7 – NAVIGATION
15) As seen in Figure 7-38, 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 7-39.
Figure 7-38 Approaching Top of Descent (TOD)
Vertical
Deviation
Indicator
(VDI)
Figure 7-39 VDI & RVSI Upon Reaching Top of Descent (TOD)
7-16
Target
Altitude
Required
Vertical
Speed
Indicator
(RVSI)
Garmin G1000 Cockpit Reference Guide for the Cessna Nav III
16) Upon reaching TOD, a descent vertical speed is
established which places the VSI pointer in line
with the RVSI as shown in Figure 7-40.
Keep Vertical
Deviation Pointer
Centered
Figure 7-40 VDI & RVSI Showing Correctly established Descent
17) When the aircraft is one minute from the bottom
of descent (BOD) this is annunciated as shown
in Figure 7-41. Upon reaching the OPSHN offset
waypoint (three miles before OPSHN), the aircraft
will be at 10,000 feet.
Figure 7-41 Approaching Bottom of Descent (BOD) at OPSHN
Align Indicated
Vertical Speed
with Required
Vertical Speed
190-00384-09 Rev. A