Pilot's Guide

190-00663-02 Rev. B

Garmin G1000 Pilot’s Guide for the Hawker Beechcraft C90A/GT/GTi

439

AUTOMATIC FLIGHT CONTROL SYSTEM

DESCENT

Whileying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

denedintheGPSightplan.Altitudeconstraintscorrespondtowaypointsintheight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ight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 7-45 FLC Descent

Cruise Altitude of 12,000 MSL

Selected Altitude of 10,000 MSL

ALT Mode

FLC Mode

ALT Mode