Cockpit Reference Guide

Garmin G1000 Cockpit Reference Guide for the Cessna Nav III
190-00384-08 Rev. A
SECTION 6 – AUTOMATIC
FLIGHT CONTROL
6-30
Non-path descent using Flight Level
Change Mode:
1) Command a non-path descent using Flight Level
Change Mode:
a) Using the ALT Knob, set the Selected Altitude
below the current aircraft altitude to an alti
-
tude (in this case, 9,400 feet) at which to level
off between VNV flight plan altitudes.
b) Press the
FLC Key before the planned TOD
during an altitude hold while VPTH is armed.
The Airspeed Reference defaults to the current
aircraft airspeed. Vertical Path Tracking and
Selected Altitude Capture Mode are armed
automatically.
2) Reduce power to allow descent in Flight Level
Change Mode. The autopilot maintains the
Airspeed Reference.
3) As the aircraft nears the Selected Altitude, the flight
director transitions to Selected Altitude Capture
Mode, indicated by the green ‘ALTS’ annunciation
flashing for up to 10 seconds.
Figure 6-36 Non-path Descent
HABUK
VNAV Target Altitude of 10,000 MSL
VNAV Target Altitude of 9,000 MSL
ALT Mode
Planned Descent
P
ath
Selected Altitude of 9,400 MSL
ALT Mode
VPTH Mode
1
2
3
FLC Mode
4
VPTH Mode
ALT Mode
Selected Altitude
5
TOD
Planned
TO
D
BOD
BOD
OPSHN
3 nm
The green ‘ALT’ annunciation flashes for up to 10
seconds upon reaching 50 feet from the Selected
Altitude; the autopilot transitions to Altitude Hold
Mode and levels the aircraft.
4) When the next TOD is reached, Vertical Path Tracking
becomes active (may require acknowledgment to
allow descent path capture).
5) As the aircraft nears the VNV Target Altitude, the
flight director transitions to VNV Target Altitude
Capture Mode, indicated by the green ‘ALTV’
annunciation flashing for up to 10 seconds.
The green ‘ALT’ annunciation flashes for up to
10 seconds upon reaching 50 feet from the VNV
Target Altitude; the autopilot transitions to Altitude
Hold Mode and levels the aircraft at the vertical
waypoint.