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FCOM 19 AUG 10
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
LANDING GEAR
BRAKES AND ANTISKID - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-32-30-20 P 1/8
FCOM 19 AUG 10
CENTER INSTRUMENT PANEL
Applicable to: ALL
(1) A/SKID and N/W STRG switch
ON : If green hydraulic pressure is available, ‐ antiskid and nose wheel steering
are available.
‐ If green hydraulic pressure is lost :
• Blue hydraulic pressure automatically takes over to supply the brakes ;
• Antiskid remains available ;
• Nose wheel steering is lost ;
• Brake blue pressure is displayed on the triple indicator.
OFF : Blue hydraulic pressure supplies the brakes.
• Antiskid is deactivated. Brake pressure has to be limited by the pilot by
refering to the triple indicator to avoid wheel locking
• Nose wheel steering is lost
• Differential braking remains available by pedals
• Brake blue pressure is displayed on the triple indicator.
(2) BRAKE and ACCU PRESS indicator
ACCU
PRESS
indication :
= ‐ Green
band
: Allowed pressure area in the brake accumulators. Provides full pressure to the
brakes.
‐ Amber
band
: Forbidden pressure area. Requires repressurization of the accumulators.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
LANDING GEAR
BRAKES AND ANTISKID - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-32-30-20 P 2/8
FCOM 19 AUG 10
BRAKE
pressure
indication
: Indicates blue pressure delivered to left and right brakes, measured upstream of the
alternate servo valves.
(3) MAX, MED, LO pb sw (springloaded)
The pushbutton controls the arming of the required deceleration rate.
MAX mode is ‐ normally selected for take off.
In the event of an aborted take off, maximum pressure is sent to the brakes as soon as
ground spoiler deployment order is present.
‐ MED or LO mode is normally selected for landing.
• When LO is selected, progressive pressure is sent to the brakes starting 1 s after ground
spoiler deployment order to provide a 1.8 m/s² (5.9 ft/s²) deceleration.
• When MED is selected, progressive pressure is sent to the brakes starting at ground
spoiler deployment order to provide a 3 m/s² (9.8 ft/s²) deceleration.
ON: The ON light illuminates blue to indicate positive arming.
The DECEL light illuminates green only if the autobrake function is active and when
actual aircraft deceleration corresponds to predetermined rate (In LO or MED : 80 %
of the selected rate ; in MAX : 2.65 m/s² (8.7 ft/s²)). This occurs approximately 8 (5)
seconds after activation for LO (MED) using brakes alone. Predetermined rates could be
achieved also by reversers alone or a combination of both reversers and brakes.
Note: On slippery runway, the predetermined deceleration may not be reached due
to antiskid operation. In this case DECEL light will not illuminate. This does not
mean that autobrake is not working.
OFF: The corresponding autobrake mode is deactivated.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
LANDING GEAR
BRAKES AND ANTISKID - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-32-30-20 P 3/8
FCOM 19 AUG 10
(4) BRK FAN pushbutton ��
ON: The brake fans run, provided the main landing gear is downlocked.
The ON legend comes on blue.
OFF: The brake fans stop.
HOT
It
: Comes on amber, along with the associated ECAM caution, when one brake
temperature exceeds 300 °C.
PEDESTAL
Applicable to: ALL
(1) PARK BRK handle
Pull the handle, then turn it clockwise to apply the parking brake.
The "PARK BRK" message is displayed on the ECAM memo page.
CAUTION As long as the handle is not in the "ON" position, the parking brake is not
applied.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
LANDING GEAR
BRAKES AND ANTISKID - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-32-30-20 P 4/8
FCOM 19 AUG 10
ECAM WHEEL PAGE
Applicable to:
(1) NORM BRK indication
Appears in amber in case of :
‐ normal braking is failed
‐ A/SKID & N/W STRG switch is at OFF (associated with ECAM caution)
‐ both BSCU channels are failed (associated with ECAM caution).
(2) ANTISKID indication
Appears amber associated with an ECAM caution in case of total BSCU failure or when the
A/SKID and N/W STRG switch is OFF or in case of anti-skid failure detected by the BSCU or
when green and blue systems are failed.
(3) AUTO BRK indication
Displayed : ‐ In green when the autobrake is armed ;
　
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