Garmin G1000 Reference Manual page 113

Altitude constraint values associated with the
Final Approach Fix (FAF) and waypoints beyond
the FAF cannot be designated for vertical
guidance. These altitude values are always
displayed as white text, as in Figure 7-36. Vertical
guidance from the FAF to the Missed Approach
Point (MAP) is given using the WAAS GPS altitude
source, therefore, the displayed altitude values
are for reference only.
Figure 7-36 Vertical Guidance is Active to the FAF
14) As the aircraft approaches OPSHN, it may be
desirable to adjust how fast, or steep, the upcoming
descent will be. The default Flight Path Angle (FPA)
is -2.5 degrees and a required vertical speed is
computed to maintain the -2.5 FPA. To change the
vertical flight path, perform the following steps.
190-00384-09 Rev. A Garmin G1000 Cockpit Reference Guide for the Cessna Nav III
SECTION 7 – NAVIGATION
a) Press the VNV PROF Softkey to place the cursor
in the target vertical speed field (VS TGT) as
shown in Figure 7-37.
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 7-37 Adjusting the Descent
c) Press the eNT Key.
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