Descent - Garmin G1000 Reference Manual

SECTION 6 – AUTOMATIC
FLIGHT CONTROL

Descent

While flying the GPS leg from Panoche VORTAC to
Clovis VORTAC, the aircraft is cleared to make a descent
to 3000 feet in preparation for the approach to KFAT.
Three examples are presented:
• Flight Level Change descent
• Vertical Path Tracking descent
• Non-path descent using Flight Level Change
Mode
Making a Flight Level Change descent:
1) Enter Flight Level Change Mode.
a) Using the ALT Knob, set the Selected Altitude
to 3000 feet.
b) Press the FLC Key to activate Flight Level
Change Mode. The annunciation 'FLC' appears
next to the Airspeed Reference, which defaults
to the current aircraft airspeed, 142 knots.
Altitude Hold Mode is armed automatically.
2) Reduce power to allow descent in Flight Level
Change Mode. The autopilot maintains the
Airspeed Reference.
�
6-28
������ �������� �� ����� ���
��� ���� �
Garmin G1000 Cockpit Reference Guide for the Cessna Nav III
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 ten seconds.
The green 'ALT' annunciation flashes for up to ten
seconds upon reaching 50 ft from the Selected
Altitude; the autopilot transitions to Altitude Hold
Mode and levels the aircraft.
Before VNAV flight control can provide vertical profile
guidance, VNAV must be enabled on the MFD and a
VNAV flight plan entered.
Vertical Path Tracking descent to VNAV
Target Altitude:
1) Select VNAV flight control:
a) Using the ALT Knob, set the Selected Altitude
below the VNAV Target Altitude of 3000 ft.
b) Press the VNV Key to arm Vertical Path
Tracking Mode. The white annunciation 'VPTH'
appears.
�
Figure 6-34 FLC Descent
�������� �������� �� ����� ���
��� ����