Pilot's Guide

Garmin G1000 Pilot’s Guide for the Hawker Beechcraft C90A/GT/GTi
190-00663-02 Rev. B
402
AUTOMATIC FLIGHT CONTROL SYSTEM
FLIGHT DIRECTOR MODES
Flight directormodes arenormally selectedindependentlyfor the pitchand rollaxes.  Unlessotherwise
specied,allmodekeysarealternateaction(i.e.,presson,pressoff).Intheabsenceofspecicmodeselection,
the ight director reverts to the default pitch and/or roll modes.  Mode keys on the AFCS controller are
accompanied by annunciator lights (Figure 7-1) which are illuminated when their respective modes are armed
or active.
ArmedmodesareannunciatedinwhiteandactiveingreenintheAFCSStatusBox.Undernormaloperation,
when the FD Keyispressed, the ightdirector revertsto the default mode(s)forthe axis(es).  Automatic
transition from armed to active mode is indicated by the white armed mode annunciation moving to the green
active mode field and flashing for 10 seconds.
If the information required to compute a ight director mode becomes invalid or unavailable, the ight
directorautomatically revertsto thedefaultmode forthataxis. Aashing yellowmodeannunciation and
annunciatorlightindicatelossofsensor(ADC)ornavigationdata(VOR,LOC,GPS,VNV,SBAS)requiredto
computecommands.Whensuchalossoccurs,thesystemautomaticallybeginstorollthewingslevel(enters
RollHoldMode)ormaintainthepitchangle(entersPitchHoldMode),dependingontheaffectedaxis.The
ashingannunciationstopswhentheaffectedmodekeyispressedoranothermodefortheaxisisselected.If
after 10 seconds no action is taken, the flashing annunciation stops.
Figure 7-3 Loss of VOR Signal
The flight director is automatically disabled if the attitude information required to compute the default flight
director modes becomes invalid or unavailable.
SWITCHING FLIGHT DIRECTORS
TheGFC700intheBeechcraftC90A/GThastwoightdirectors,eachoperatingwithinanIAU.Theautopilot
follows the selected flight director only, indicated by an arrow pointing toward either the pilot or copilot side, in
thecenteroftheAFCSStatusBox.FlightdirectorsmaybeswitchedbypressingtheXFR Key. The annunciator
light arrow for the selected flight director is also illuminated beside the XFRKey.Whentheightdirectorsare
switched, the vertical and lateral modes revert to default.
Figure 7-4 Flight Director Selection Indications
Pilot-side Flight Director Selected
Copilot-side Flight Director Selected