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Center Pedestal
STAB TRIM
Used to engage respective
stabilizer trim channel.
Stabilizer Trim --- Pilot’s Control Wheel
Figure 11---50---3
TOP VIEW
STAB TRIM DISC (red)
Used to disengage
stabilizer trim control.
NOSE UP / NOSE DN (black)
Used to manually operate
stabilizer trim.
Pilot’s Control Wheel
(Copilot’s Opposite)
Clacker indicates that stabilizer has
been in motion for more that 3 seconds
(possible trim runaway condition).
Avoid unintentionally pressing the
STAB TRIM DISC switches. Briefly
pressing these switches can result
in disengaging one or both STAB
TRIM channels. If this occurs, it will
not be possible to re--engage the
STAB TRIM channel(s) in flight.
CAUTION
Pending rectification:
Vol. 1 11--50--4
FLIGHT CONTROLS
Horizontal Stabilizer Trim REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
Elevator Mistrim Primary Flight Display Flag <1015>
Figure 11---50---4
Elevator Mistrim Indicator (yellow)
Indicates that the horizontal stabilizer
is in a mistrim condition, when the
autopilot is engaged.
Primary Flight Display
Pilot’s and Copilot’s Instrument Panels
E
Vol. 1 11--50--5
FLIGHT CONTROLS
Horizontal Stabilizer Trim REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
Stabilizer Trim EICAS Indications
Figure 11---50---5
STAB
NU
ND
Stabilizer Trim Pointer
Moves up and down along the
trim scale to indicate trim position.
Green -- Stabilizer position is in
take--off configuration.
White -- Stabilizer position is not
in take--off configuration.
Stabilizer Trim Readout
Displays stabilizer trim position.
Green -- Stabilizer position is in
take--off configuration.
White -- Stabilizer position is not
in take--off configuration.
Stabilizer Trim Scale (white)
Green band -- Stabilizer trim
take--off range.
ND mark -- Stabilizer at
maximum nose down trim limit.
NU mark -- Stabilizer at
maximum nose up trim limit.
Intermediate marks -- 5 trim
units and 10 trim units.
SPLR/STAB IN TEST (green)
Indicates that the spoiler and stabilizer
control system is in self test mode.
STAB TRIM (amber)
Indicates that both channels of the control
unit are disengaged or have failed.
BRT
Status Page
Flight Controls Page
Vol. 1 11--50--6
FLIGHT CONTROLS
Horizontal Stabilizer Trim REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
Stab Trim EICAS Indications <1001>
Figure 11---50---6
STAB TRIM
STAB TRIM LIMIT
MACH TRIM
SPLR/STAB IN TEST
STAB FAULT
SPLR/STAB FAULT
STAB CH 1 INOP
STAB CH 2 INOP
SSCU 1 FAULT
SSCU 2 FAULT
MACH TRIM caution (amber)
Indicates that Mach trim is not engaged
or has failed on both channels.
STAB TRIM LIMIT caution (amber)
Indicates that stabilizer trim is at or
greater than 14 trim units.
STAB TRIM caution (amber)
Indicates that both channels of the control
unit are disengaged or have failed.
SSCU 1 or 2 FAULT status (white)
Indicates that one of two spoiler and stabilizer
control modules has failed or is not powered.
STAB CH 1 or 2 INOP status (white)
Indicates respective stabilizer trim channel
is not engaged or has failed.
SPLR/STAB FAULT status (white)
Indicates a fault in the spoiler and
stabilizer control unit.
STAB FAULT status (white)
Indicate loss of redundancy in
stabilizer trim control.
SPLR/STAB IN TEST advisory (green)
Indicates that the spoiler and stabilizer
control system is in self test mode.
Status Page
Primary Page
Vol. 1 11--50--7
FLIGHT CONTROLS
Horizontal Stabilizer Trim Sep 09/02
Flight Crew Operating Manual
CSP C--013--067
A. System Circuit Breakers
SYSTEM SUB--SYSTEM CB NAME BUS BAR CB
PANEL
CB
LOCATION
NOTES
SSCU 1 CH A DC BUS 1 1 F1
Horizontal Control Unit
SSCU 1 CH B DC BUS 2 F1
Stabilizer Trim SSCU 2 CH A DC
2 R3
SSCU 2 CH B
ESSENTIAL R4
Vol. 1 11--50--8
FLIGHT CONTROLS
Horizontal Stabilizer Trim Sep 09/02
Flight Crew Operating Manual
CSP C--013--067
THIS PAGE INTENTIONALLY LEFT BLANK
Vol. 1 11--60--1
FLIGHT CONTROLS
Flaps and Slats REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
1. FLAPS AND SLATS
The flap and slat systems provide lift augmentation during take-off and landing. Each wing
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