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APU
SHUT--OFF
NOSE
DOOR
OPEN
FLT/
NORM
NOTE
Do not apply torque to the parking
brake handle until the parking brake
handle is in the full pulled position.
Do not rotate the parking brake
handle more than 90 degrees to lock.
REV 56, Jan 31/03
Vol. 1 16--40--6
LANDING GEAR
Brake System
Flight Crew Operating Manual MASTER
CSP A--013
Parking Brake --- EICAS Messages <MST>
Figure 16---40---5
PARKING BRAKE
Primary Page
Status Page
PARKING BRAKE ON
<0039>
<0039>
PARK BRAKE SOV
<0006>
<0039>
PARK BRAKE SOV
Caution (amber)
Indicates that the
parking brake SOV has
failed or the parking
brake SOV is in the
closed position with
the parking brake
handle off.
CONFIG
BRAKES
PARKING BRAKE ON
Advisory (green)
Comes on to indicate that
the parking brake is set.
Conditions are:
<0039>
Vol. 1 16--40--7
REV 56, Jan 31/03
LANDING GEAR
Brake System
Flight Crew Operating Manual
CSP A--013
MASTER
Brake Temperature Monitoring System <MST>
Figure 16---40---6
BTMS OVHT WARN RESET Switch
Press to reset the BTMS. The BTMS can only
be reset if the brake overheat condition or the
brake temperature difference has discontinued.
Landing Gear Control Panel
Center Instrument Panel
When a brake overheat condition is detected, the brake
temperature outline and readout will remain red, regardless
of temperature value, until the system is reset by the BTMS
OVHT WARN RESET switch.
BTMU FAIL Status (white)
Comes on to indicate that the BTMS
unit has failed.
NOTE
Brake Temperature Readout
Indicates temperature value of respective brake.
BTMS OVHT HORN
WARN RESET
ARMED
ANTI SKID
MUTED
TEST
<0039>
<0039>
Status Page
BTMU FAIL
REV 56, Jan 31/03
Vol. 1 16--40--8
LANDING GEAR
Brake System
Flight Crew Operating Manual MASTER
CSP A--013
A. Parking Brake
Inboard brake control valves and the parking shutoff valve are used to provide braking
when the aircraft is parked. Pulling the parking brake handle while fully depressing
both rudder pedals and turning the handle 90 degrees in either direction, locks both
brake control valves in the applied position.
When the hydraulic systems are shut down, hydraulic pressure slowly leaks away via
the anti-skid return lines. The parking brake shutoff valve closes when the parking
brake is applied, ensuring that hydraulic system 3 accumulator pressure is maintained
on the inboard brakes for a prolonged period of time.
NOTE
With the parking brake applied, only the inboard
brakes will hold for a prolonged period of time if No. 2
and No. 3 hydraulic systems are not available.
Parking brake configuration and operational condition are continuously monitored and
any detected fault is displayed on EICAS in the form of a visual and/or aural message.
Effectivity:
S Airplanes 7003 to 7128 and 7002, 7129 and subsequent incorporating SB601R--24--055
NOTE
On the ground,with the parking brake applied, the ADGautomatic
deployment is inhibited.
B. Brake Temperature Monitoring System
The brake temperature monitoring system (BTMS) provides an indication to the crew of
the main wheel brake temperatures. Individual brake temperatures are displayed as a
color coded numerical readout on the EICAS Status page. The brake temperature
readout will be displayed when the value of one of the four readouts is six or greater, or
when the landing gear and flap positions are displayed on the EICAS.
A BTMS overheat warning reset switch, on the landing gear control panel, is used to
reset the system when the brake overheat condition no longer exists.
C. Anti--Skid System
The anti-skid system controls hydraulic pressure to the four main wheel brakes to
provide anti-skid protection. The anti-skid system consists of a dual channel (inboard
and outboard) anti-skid control unit (ASCU), four (axle mounted) wheel speed
transducers and two dual anti-skid control valves.
Vol. 1 16--40--9
REV 56, Jan 31/03
LANDING GEAR
Brake System
Flight Crew Operating Manual
CSP A--013
MASTER
The anti-skid system performs the following functions:
S Individual wheel anti-skid control: -- Prevents skids from developing
S Touchdown protection: -- Prevents landing with locked wheels in the event that the
pilot(s) are depressing the brake pedals during touchdown
　
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