190-00709-00 Rev. A
Garmin G1000 Pilot’s Guide for the Socata TBM 850
7-39
AUTOMATIC FLIGHT CONTROL SYSTEM
DESCENT
While flying the arrival procedure, the aircraft is cleared for descent in preparation for the approach to KCOS.
Three methods are presented for descent:
• Flight Level Change descent – Flight Level Change Mode can be used to descend to the Selected Altitude at a
constant airspeed. This descent method does not account for flight plan waypoint altitude constraints.
• Vertical Path Tracking descent – Vertical Path Tracking Mode is used to follow the vertical descent path
defined in the GPS flight plan. Altitude constraints correspond to waypoints in the flight plan. Before VNV
flight control can provide vertical profile guidance, a VNV flight plan must be entered and enabled.
• Non-path descent in a VNV scenario – A VNV flight plan is entered and enabled, however Pitch Hold, Vertical
Speed, or Flight Level Change Mode can be used to descend to the VNV Target Altitude prior to reaching the
planned TOD. Flight Level Change Mode is used in the example.
Flight Level Change descent:
1)
Select Flight Level Change Mode:
a)
Using the
ALT SEL
Knob, set the Selected Altitude to 10,000 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. Selected Altitude Capture Mode is armed
automatically.
c)
If desired, press the
SPD
Key to display the Airspeed Reference in Mach.
2)
Use the
NOSE UP/DN
Wheel or push the
CWS
Button while hand-flying the aircraft to adjust the commanded
airspeed while maintaining the same power, or reduce power to allow descent in Flight Level Change Mode
while the autopilot maintains the current airspeed.
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.
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.
Figure 7-40 FLC Descent
Cruise Altitude of 12,000 MSL
Selected Altitude of 10,000 MSL
ALT Mode
FLC Mode
ALT Mode
1
2
3
Содержание G1000:Socata
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