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generated a single press of the Master Warning/Caution pushbutton will mute both aural warnings.
EDM will show as the flight director (FD) vertical mode and HDG will show as the FD lateral mode on
the PFDs.
The preselected altitude will be automatically set to 15,000 feet or 4500 meters. The HDG bug will be
automatically set to 90° left of the current heading. Both the HDG bug and the preselected altitude
may be changed by the flight crew during emergency descent mode.
AUTOMATIC FLIGHT CONTROL SYSTEM
Flight Crew Operating Manual Rev 3, Apr 25, 2005
CSP 700−5000−6
Volume 2
04−10−32
AUTOMATIC EMERGENCY DESCENT MODE (EDM) ( OPTIONAL) (CONT'D)
The digital readout of the IAS/Mach will be displayed in red on the PFDs. The target airspeed will
follow Vmo−10. A target speed of 250 KIAS will be selected when the ASEL FD mode becomes
active.
The FD will fly a HDG/FLC descent to 15,000 feet The FD will transition to ASEL mode and then ALT
when levelling off at 15,000 feet. The EDM annunciation will flash for 5 seconds when transitioning
between modes.
The FD will remain in EDM mode until the autopilot is disengaged. The only way to cancel EDM
mode is to disengage the autopilot. The autopilot can be disengaged at anytime while in EDM mode.
Pressing the TCS switches longer than one second will be considered as disengaging the autopilot.
When the autopilot is disengaged, the FD modes will be the lateral and vertical modes that were
active at the time.
Autothrottle automatic engagement will only occur upon initiation of EDM. Autothrottle can be
manually disengaged and re−engaged while in EDM. Autothrottle will not be re−engaged
automatically if disengaged.
The EMERGENCY DESCENT CAS message will be recorded by the FDR when posted.
AUTOMATIC FLIGHT CONTROL SYSTEM
Rev 3, Apr 25, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
04−10−33
AUTOPILOT - FLIGHT DIRECTOR EICAS MESSAGES
GF0410_097
EMERGENCY DESCENT
Indicates that the AFCS is in
automatic emergency descent mode.
EMERGENCY DESCENT
AUTOMATIC FLIGHT CONTROL SYSTEM
Flight Crew Operating Manual Rev 2A, Apr 11, 2005
CSP 700−5000−6
Volume 2
04−10−34
AUTOPILOT - FLIGHT DIRECTOR EICAS MESSAGES (CONT'D)
YD 1−2 FAIL
Indicates that yaw
damper 1 (2) has failed.
AFCS ENGAGE INVAL
Indicates that fault
warning computer detects
invalid autopilot
engagement.
AP PITCH TRIM FAIL
Indicates that autopilot
pitch trim is inoperative.
AP TRIM IS NU− ND
Indicates that autopilot pitch mistrim
monitor detects excessive forces.
YD OFF
Indicates that fault warning
computer detects that no
yaw damper is engaged.
AP TRIM IS LWD − RWD
Indicates that autopilot roll
mistrim monitor detects
excessive forces.
GF0410_095
AP PITCH TRIM FAIL
AP TRIM IS NU
AP TRIM IS ND
AP TRIM IS LWD
AP TRIM IS RWD
AFCS ENGAGE INVAL
YD 1 FAIL
YD 2 FAIL
YD OFF
AUTOMATIC FLIGHT CONTROL SYSTEM
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
04−10−35
AUTOPILOT - FLIGHT DIRECTOR EICAS MESSAGES (CONT'D)
AFCS 1 (2) FAIL
Indicates that AFCS (one or both) functions has
failed. The AFCS functions include yaw damper,
YD NOT CENTERED
Indicates that the YD linear actuator is
not centered while on the ground. GF0410_096a
AFCS 1 FAIL
AFCS 2 FAIL
YD NOT CENTERED
autopilot and flight director.
AUTOMATIC FLIGHT CONTROL SYSTEM
Flight Crew Operating Manual Rev 2A, Apr 11, 2005
CSP 700−5000−6
Volume 2
04−10−36
CB - AFCS SYSTEM
GF0420_001
STAT SYS BUS PREV CNTL TEST
PAGE
NEXT
PAGE
EMER
CNTL
BUS
CIRCUIT BREAKER − SYSTEM 1/2
CIRCUIT BREAKER SYSTEM
AFCS
AIR COND/PRESS
APU
BLEED
CAIMS
COMM
DOORS
ELEC
ENGINE
FIRE
FLT CONTROLS
FUEL
BRT
A/T CTLR
CB − AFCS SYSTEM 1/3
AC 1 CCBP
A/T SERVOS DC 1
AP 1 SERVOS DC 1
AP 2 SERVOS DC 2
GUID PANEL CH 1 BATT
GUID PANEL CH 2 DC ESS
IN
IN
IN
IN
IN
IN
IAC 1
CB − AFCS SYSTEM 2/3
BATT
IAC 2 DC ESS
IAC 3 BATT
YD 1 BATT
YD 2 DC ESS
YD HEAT 1 DC 1
IN
IN
IN
IN
IN
IN
YD HEAT 2
CB − AFCS SYSTEM 3/3
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