Pilot's Guide

190-00663-02 Rev. B
Garmin G1000 Pilot’s Guide for the Hawker Beechcraft C90A/GT/GTi
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AUTOMATIC FLIGHT CONTROL SYSTEM
FLIGHT LEVEL CHANGE MODE (FLC)
NOTE: The Selected Altitude should be set before selecting Flight Level Change Mode.
Flight Level Change Mode is selected by pressing the FLC Key. This mode acquires and maintains the
Airspeed Reference (in IAS or Mach) while climbing or descending to the Selected Altitude (shown above
theAltimeter).WhenFlightLevelChangeModeisactive,theightdirectorcontinuouslymonitorsSelected
Altitude,airspeed,Mach,andaltitude.
TheAirspeedReferenceissettothecurrentairspeeduponmodeactivation.FlightLevelChangeModeis
indicatedbyagreen‘FLC’annunciationbesidetheAirspeedReferenceintheAFCSStatusBox.TheAirspeed
ReferenceisalsodisplayeddirectlyabovetheAirspeedIndicator,alongwithabugcorrespondingtotheAirspeed
Reference along the tape.
Engine power must be adjusted to allow the autopilot to fly the aircraft at a pitch attitude corresponding
to the desired flight profile (climb or descent) while maintaining the Airspeed Reference. The flight director
maintains the current altitude until either engine power or the Airspeed Reference are adjusted and does not
allow the aircraft to climb or descend away from the Selected Altitude.
CHANGING THE AIRSPEED REFERENCE
TheAirspeedReference(showninboththeAFCSStatusBoxandabovetheAirspeedIndicator)maybe
adjusted by:
•Usingthe NOSE UP/DN Wheel
•Pressingthe CWS Button, hand-flying the aircraft to attain a new Airspeed Reference, then releasing the
CWS Button
NOTE: If the Selected Altitude is reached during CWS maneuvering, the Altitude Reference is not changed.
To adjust the Altitude Reference in this case, the CWS Button must be pressed again after the Selected
Altitude is reached.
Duringclimb,thepilotmustselecttheAirspeedReference(IASorMach),automaticswitchingdoesnot
occur.Fordescent,ifMachairspeedreferenceisselected(above16,000ft)theaircraftdescendsinMachuntil
theMachairspeedreferencereaches250KIAS,atwhichpointtheairspeedreferenceautomaticallyswitches
toIAS.ThesystemdeterminesaircraftclimbordescentbytherelationshipbetweenthecurrentandSelected
altitudes.
AirspeedReferenceunitscanbemanuallytoggledbetweenIASandMachunitsusingtheSPDKey.When
theFLCAirspeedReferenceisdisplayedinMach,theAirspeedReferenceBugisdisplayedontheAirspeed
IndicatorattheIAScorrespondingtotheselectedMachtargetspeedandthecurrentMachnumberisshown
onlyintheAFCSStatusBox.