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A
747-400
MAINTENANCE MANUAL
AUTOBRAKE CARD
AUTOBRAKE OPERATION - ARMING LOGIC
Autobrake System Schematic
Figure 12 (Sheet 2)
A83727
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A
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MAINTENANCE MANUAL
BRAKE
PRESS
AUTOBRAKE CARD AUTOBRAKE PRESSURE CONTROL MODULE
PRIMARY OR ALTERNATE AIR/GROUND SYSTEMS
AVERAGE FORWARD WHEEL SPEED EXCEEDED 60 KTS,
LOSS OF GROUND, OR AUTO BRAKES "OFF"
MODE RESETS LATCH
POWER THRU THRUST LEVER 2 SWITCH
POWER THRU THRUST LEVER 4 SWITCH
INITIAL ON-RAMP PRESSURE APPLICATION LIMITED
TO 150 PSI/SEC, WHICH INCREASES TO 450 AFTER
2 SECONDS COMMANDED DECELERATION ACHIEVED
WITHIN 3 SECONDS
AUTOBRAKE OPERATION - APPLICATION LOGIC
Autobrake System Schematic
Figure 12 (Sheet 3)
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A
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MAINTENANCE MANUAL
AUTOBRAKES 2
1
3 DISARM
4 MAXOFF AUTO
AUTOBRAKE/BITE CARDS
EITHER PRIMARY OR ALTERNATE A/G SYSTEM
AFTER APPLICATION
AUTOBRAKE OPERATION - DISARM Autobrake System Schematic Figure 12 (Sheet 4)
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A
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MAINTENANCE MANUAL
AUTOBRAKES 2
1
3 DISARM
4 MAXOFF AUTO
RTO ARMING LOGIC
NO AUTOBRAKE FAULT NO NORMAL ANTISKID FAULT
28V DC
GROUND MODE
AUTOBRAKE
SELECT MODULE
LATCH COIL
AUTOBRAKE CARD
BOTH PRIMARY AND ALTERNATE AIR/GROUND SYSTEMS
AUTOBRAKE OPERATION - RTO ARM
Autobrake System Schematic
Figure 12 (Sheet 5)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
AUTOBRAKE CARD AUTOBRAKE PRESSURE CONTROL MODULE
POWER THRU THRUST LEVER 2 SWITCH
POWER THRU THRUST LEVER 4 SWITCH
AVERAGE FORWARD WHEEL SPEED EXCEEDED 85 KNOTS WITH THRUST LEVERS ADVANCED. NOW >80 KNOTS. IRS SIGNAL VALID AND AGREES WITH WHEEL SPEED
AUTOBRAKE OPERATION - RTO APPLICATION Autobrake System Schematic Figure 12 (Sheet 6)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
AUTOBRAKES 2
1
3 DISARM
4 MAXOFF AUTO AUTOBRAKE
BRAKE PRESSURE
AUTOBRAKE PRESSURE CONTROL MODULE
AUTOBRAKE/BITE CARDS
PRIMARY OR ALTERNATE AIR/GROUND SYSTEMS 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 起落架 LANDING GEAR 6(137)
