Embraer Prodigy
®
Flight Deck 100 Pilot’s Guide
190-00728-04 Rev. A
452
AUTOMATIC FLIGHT CONTROL SYSTEM
FLIGHT DIRECTOR MODES
Flight director modesare normallyselected independentlyfor thepitch androll axes. Unlessotherwise
specied,allmodekeysarealternateaction(i.e.,presson,pressoff).Intheabsenceofspecicmodeselection,
the flight director reverts to the default pitch and/or roll modes(s).
Armed modes are annunciated in white and active in green or magenta (if the mode reference is provided by
theGPSnavigationfunction)intheAFCSStatusBox.Undernormaloperation,whenthecontrolfortheactive
ightdirectormodeispressed,theightdirectorrevertstothedefaultmode(s)fortheaxis(es).Automatic
transition from armed to active mode is indicated by the white armed mode annunciation moving to the active
modeeldandashingfor5seconds.
If the informationrequired to computea ight director mode becomes invalid orunavailable, the ight
directorautomaticallyrevertstothedefaultmodeforthataxis.Aashingyellowmodeannunciationindicates
lossofsensor(ADC)ornavigationdata(VOR,LOC,GPS,VNV,SBAS)requiredtocomputecommands.When
suchalossoccurs,thesystemautomaticallybeginstorollthewingslevel(entersRollHoldMode)ormaintain
thepitchangle(entersPitchHoldMode),dependingontheaffectedaxis.Theashingannunciationstops
whentheaffectedmodekeyispressedoranothermodefortheaxisisselected.After5seconds, if no action is
taken,theashingannunciationstopsandtheightdirectorentersthedefaultmodefortheaffectedaxis.
Figure 7-3 Loss of VOR Signal
Theightdirectorisautomaticallydisablediftheattitudeinformationrequiredtocomputethedefaultight
director modes becomes invalid or unavailable.
FLIGHT DIRECTOR SELECTION
TheGFC700ightdirectorcanbecoupledtoeitherthepilot-sideorcopilot-sidePFDdatausingtheCPL
Key.Whenthepilot-sideorcopilot-sidedatasourceischanged,theverticalandlateralmodesreverttodefault.
The autopilot follows the selected flight director only, indicated by an arrow pointing toward either the pilot or
copilotside,inthecenteroftheAFCSStatusBox.
The currently active flight director may be turned off and the Command Bars removed from the displays
by pressing the active FDKeyagain.PressingtheFD Key for the inactive flight director only removes the
Command Bars from the corresponding display. The FD key for the selected flight director is disabled when
the autopilot is engaged.
Figure 7-4 Flight Director Selection Indications
Pilot-side Flight Director Selected
Copilot-side Flight Director Selected