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pushed without any downward pressure.
If one of the two power drive unit motors fails, the system will remain functional, but will
operate at half speed and a FLAPS HALF SPEED status message will be displayed on the
EICAS status page and on the FLT CONTROLS synoptic page.
The EICAS primary page will display flap position in relation to landing gear position when
either the landing gear or flaps are extended. At all other times, the gear and flap
information is removed from the primary page, but flap position is always displayed on the
FLT CONTROLS synoptic page.
REV 56, Jan 31/03
Vol. 1 11--60--2
FLIGHT CONTROLS
Flaps
Flight Crew Operating Manual MASTER
CSP A--013
Flap System
Figure 11---60---1
OUTBOARD TRAILING
EDGE (TE) FLAP 40
45
INBOARD TE
FLAP
DC BUS 1
DC BUS 2
AC
BUS 1
AC
BUS 2
FLEX DRIVE SHAFT
BRAKE AND POSITION
SENSOR UNIT
BALL SCREW ACTUATOR
FLAP LEVER
M M
OUTBOARD TE
FLAP
INBOARD TE
FLAP
Vol. 1 11--60--3
REV 56, Jan 31/03
FLIGHT CONTROLS
Flaps
Flight Crew Operating Manual
CSP A--013
MASTER
Flap Controls <MST>
Figure 11---60---2
Flaps Selector
To deploy flaps, move
flaps selector aft to the
detent position that
corresponds to the
required flap angle.
Flap Selection Lever
Centre Pedestal
<0006>
8
<0006>
8
GRND PROX FLAP (guarded Switch)
When pressed:
Mutes TOO LOW FLAPS or
TOO LOW TERRAIN under
certain conditions.
OVRD (white) comes on.
GPWS / Mechanic Call Panel
Centre Pedestal
<0040>
GPWS FLAP OVRD Guarded
Toggle Switch
GPWS FLAP OVRD -- Mutes flap
aural warning when entering the
landing configuration with flaps not
in the landing configuration.
NORM (guarded) -- Normal operation.
REV 56, Jan 31/03
Vol. 1 11--60--4
FLIGHT CONTROLS
Flaps
Flight Crew Operating Manual MASTER
CSP A--013
Flap System --- EICAS Messages <MST>
Figure 11---60---3
CONFIG FLAPS
FLAPS FAIL
<0039>
CONFIG
FLAPS
<0039>
<0039> <0006>
<0006>
<0006>
Vol. 1 11--60--5
REV 56, Jan 31/03
FLIGHT CONTROLS
Flaps
Flight Crew Operating Manual
CSP A--013
MASTER
Flight Controls Synoptic Page --- Flap Indications <MST>
Figure 11---60---4
FLAPS HALF SPEED
Flaps Position Readout
Indicates, in degrees, the position of LH and
RH flaps.
Green -- LH and RH flaps positions do not
differ by 5 degrees.
White -- LH and RH flaps positions differ by
greater than 5 degrees.
Amber dashes will be displayed if input value
is invalid.
Flaps Outlines
Green -- Both channels of the flap electronic
control unit (FECU) are operative.
White -- One of the channels of the FECU is
inoperative.
Half--Intensity Magenta -- Input value is invalid.
Amber -- Both channels of the FECU are
inoperative.
FLAPS HALF SPEED status (white)
Comes on to indicate that one of the channels
of the FECU is inoperative, resulting in a
FLT Control Synoptic Page reduced flaps deployment and retraction rate.
0
0 20 20
FLIGHT CONTROLS
14
0
0
14
8
AIL AIL
ELEV
RUDDER
--TRIM--
NU
ND
NL NR
LWD
ELEV
RWD
RUDDER
AIL STAB
0
0
0
25 RUDDER 25
<0039>
<0039>
<0039>
<0039>
<0039>
REV 56, Jan 31/03
Vol. 1 11--60--6
FLIGHT CONTROLS
Flaps
Flight Crew Operating Manual MASTER
CSP A--013
A. System Circuit Breakers
SYSTEM SUB--SYSTEM CB NAME BUS BAR CB
PANEL
CB
LOCATION
NOTES
Power Drive FLAPS PDU 1 AC BUS 1 1 B5
Units FLAPS PDU 2 AC BUS 2 2 B5
Flaps
Flap
FLAPS CONT
CH 1 DC BUS 1 1 F4
Controllers FLAPS CONT
CH 2 DC BUS 2 2 F4
Vol. 1 11--70--1
REV 56, Jan 31/03
FLIGHT CONTROLS
Spoilers
Flight Crew Operating Manual
CSP A--013
MASTER
1. SPOILERS
There are four spoiler panels located on the upper surface of each wing consisting of:
S One spoileron (outer panel)
S One flight spoiler
S Two ground spoilers (inner two panels).
Each spoiler is actuated by a single electro--hydraulic power control unit and provides roll
assist and proportional lift dumping functions. Spoiler operation is controlled by two, dual
　
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