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ALT Altitude hold mode - tracking.
ALTS Altitude select mode - tracking.
ALTS Altitude select mode - armed.
ALTS Altitude select mode - aborted capture.
ALTS CAP Altitude select mode - capturing.
ALTV Vertical navigation mode - vertical mode is armed to capture FMS target altitude.
AP
←
Autopilot is engaged, flight guidance commands are coupled to pilot side flight director
(annunciated on pilot’s PFD).
AP
←
FD1
Autopilot is engaged, flight guidance commands are coupled to pilot side flight director
(annunciated on copilot’s PFD).
AP
→
Autopilot is engaged, flight guidance commands are coupled to copilot side flight director
(annunciated on copilot’s PFD).
AP
→
FD2
Autopilot is engaged, flight guidance commands are coupled to copilot side flight director
(annunciated on pilot’s PFD).
AP
→ Autopilot is engaged with FD/AP synchronization in progress. Flashes for 5 seconds then
AP steady (aileron and elevator servo clutches are released).
←
AP
→ Autopilot disengaged warning, for a manual disengagement flashes for 5 seconds then blanks.
For a monitored disengagement, flashes until acknowledged by pressing an AP/SP DISC
AP button.
←
B/C1
B/C2 Back course mode - capture/tracking.
PFD Messages (Sheet 1 of 3)
Table 4-1
AUTOMATIC FLIGHT CONTROL SYSTEM
For Training Purposes Only
Sept 04
4-57
P I LOT T R A I N I N G GU I D E
B/C1
B/C2 Back course mode - armed.
DR Dead reckoning operation.
E Autopilot is engaged and is detecting a significant elevator mistrim.
FD Flight director fail flag (annunciated within the attitude indicator).
FLC Flight level change mode - active.
FLC Flight level change mode - armed, VNAV has armed FLC mode (climb phase only) while
aircraft is holding at a VNAV target altitude.
FLC Flight level change overspeed mode - active (flashing).
GA
Lateral go-around mode - active.
Vertical go-around mode - active.
GP Vertical navigation glide path mode - armed, vertical navigation mode is active and approach
mode is armed.
GS Glideslope mode - captured/tracking.
GS Glideslope mode - armed.
HDG Heading select mode - active.
LNV1 LOC1
LNV2 LOC2
LNV3 VOR1
VOR2
Navigation or approach mode - capture/tracking (identified by the navigation source).
LVN1 LOC1
LNV2 LOC2
LNV3 VOR1
VOR2
Navigation or approach mode - armed (identified by the navigation source).
LNV1
LNV2
LNV3
FMS NAV is invalid.
PATH VNAV path mode - armed, vertical navigation mode is active (in cruise or descent phase) VNAV
path is armed.
PATH Vertical navigation mode is armed, but is unable to capture vertical path.
PTCH Pitch mode - active.
PTCH Vertical navigation mode is active and has automatically armed pitch mode (in descent).
ROLL Roll mode - active.
SYNC Flight director synchronization is in progress.
TO
Lateral takeoff mode - active.
Vertical takeoff mode - active.
INDICATION DESCRIPTION
PFD Messages (Sheet 2 of 3)
Table 4-1
AUTOMATIC FLIGHT CONTROL SYSTEM
4-58 For Training Purposes Only
Sept 04
P I LOT T R A I N I N G GU I D E
VALT Vertical navigation mode is selected and altitude hold mode is active.
VALTS Vertical navigation mode is selected and altitude select mode is active.
VALTV Vertical navigation mode is selected - tracking FMS target altitude.
VALTV CAP Vertical navigation mode is selected - capturing FMS target altitude.
VFLC Vertical navigation mode is selected and FLC mode is active (in climb phase).
VFLC Vertical navigation mode, FMS VNAV is valid and flight level change overspeed mode is active
(flashes).
VGP Vertical navigation mode and glide path are captured.
VPATH Vertical navigation mode - capturing/tracking a vertical path.
VPTCH Vertical navigation mode selected and pitch mode is active.
VNAV Vertical navigation mode, and FMS VNAV is invalid (annunciated in the vertical arm field).
VS Vertical speed mode - active.
VVS Vertical navigation mode selected and vertical speed mode is active.
YD Both yaw damper channels are disengaged or have failed.
INDICATION DESCRIPTION
PFD Messages (Sheet 3 of 3)
Table 4-1
AUTOMATIC FLIGHT CONTROL SYSTEM
For Training Purposes Only
May 03
4-59
P I LOT T R A I N I N G GU I D E
EICAS Messages
EICAS Messages
Table 4-2
MESSAGE MEANING AURAL WARNING
(IF ANY)
AFCS MSGS FAIL No valid AFCS messages received from either IAPS side. Triple attenson
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