Garmin Software Version 0764.09 Guide de l'utilisateur Page 86

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Cirrus Perspective
by Garmin – Cockpit Reference Guide for the SR20/SR22/SR22T
190-00821-06 Rev. A
70
Additional Features
Flight
InstrumentsEIS
Nav/Com/
XPDR/AudioAFCSGPS Nav
Flight
PlanningProcedures
Hazard
Avoidance
Additional
Features
Abnormal
Operation
Annun/
AlertsAppendixIndex
Whennopilotinteractionisdetectedforanadditional60seconds,theCaution
Annunciation ‘HYPOXIA ALERT’ is displayed. Again, selecting the ALERT Softkey
will acknowledge the message and reset the system. Pressing any other softkey, or
turning a knob will also reset the system.
Whennopilotinteractionisdetectedforanadditional60seconds,theWarning
Annunciation ‘AUTO DESCENT’ is displayed in the Annunciation Window and
‘Automaticdescent to 14,000FT in 60seconds’ is displayed in the AlertsWindow.
Once again, selecting the ALERT Softkey will acknowledge the message and reset the
system. Pressing any other softkey, or turning a knob will also reset the system.
Whennointeractionisdetectedforanother60seconds,thesystemwillautomatically
proceed with the descent.
As the system prepares for descent, the Selected Altitude is set to 14,000 and
the AFCS enters Indicated Airspeed (IAS) mode with the airspeed reference set to
the maximum allowable airspeed setting for the specific aircraft model. Refer to the
Flight Director Vertical Modes in the AFCS section. AFCS lateral mode settings are
not affected.
As the descent begins, an ‘AUTO DESCENT’ warning is displayed in the Annunciation
Window.‘AUTODESCENT-AircraftDescendingto14,000FT’isdisplayedinthe
Alerts Window. ‘EDM’ is shown as an AFCS Status Annunciation indicating the system
has entered Automatic Descent Mode. ‘EDM’ (Emergency Descent Mode) is the AFCS
mode that is activated when Hypoxia Recognition initiates an automatic descent.
A continuous repeating chime will be heard as long as Automatic Descent Mode is
active. After the descent begins, Automatic Descent Mode can only be canceled by
disconnecting the autopilot.
As the aircraft reaches 14,000 feet the system sets the AFCS to Altitude Hold
mode. The AFCS will also remain in Automatic Descent Mode as indicated by ‘EDM’
continuing to be displayed as an AFCS Status Annunciation. The system again begins
monitoring for pilot interaction.
If no pilot interaction is detected for four minutes, the system initiates the second
descent.Asthesystempreparesforthisdescent,theSelectedAltitudeissetto12,500
and the AFCS again enters IAS mode with the airspeed reference set to the maximum
allowable airspeed for the specific aircraft model.
As the descent begins, an ‘AUTO DESCENT’ warning is displayed in the
Annunciation Window. ‘AUTO DESCENT - Aircraft Descending to 12,500FT’ is
displayed in the Alerts Window. ‘EDM’ is shown as an AFCS Status Annunciation.
Also, the continuous repeating chime is heard.
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