One antiskid NORMAL valve fault on the left
main landing gear.
ANTISKID NORM VLV R .................................. 324 031 42
One antiskid NORMAL valve fault on the right
main landing gear.
ANTISKID XDCR L ...................................... 324 021 41
One Antiskid wheelspeed transducer fault on the
left main landing gear.
ANTISKID XDCR R ...................................... 324 021 42
One Antiskid wheelspeed transducer fault on the
right main landing gear.
AOA VANE L ........................................... 342 031 41 Left angle of attack (AOA) channel is failed.
AOA VANE R ........................................... 342 031 42 Right angle of attack (AOA) channel is failed.
EICAS STATUS MESSAGES
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MESSAGE/DESCRIPTION___________________ FAULT CODE
APU .................................................. 491 004 00 APUC detected fault that would cause automatic shutdown of APU in unattended mode operation, or complete loss of APUC bus activity (both L and R 629) for 3 seconds after the APU master control switch has been in the on position for ten seconds.
APU AIR STARTER ...................................... 494 001 00 APUC detected loss of air turbine starter function.
APU BATTERY .......................................... 243 033 00 APU Battery failure.
APU BATTERY OVHT ..................................... 243 032 00 APU battery over temperature.
APU BLEED AIR ........................................ 495 001 00 APUC detected loss of ability to pneumatically load APU. Message is triggered by IGV or surge control system faults.
APU CONTROL .......................................... 496 001 00 APUC detected failure of redundant control function or loss of one ARINC 629 channel.
APU DOOR ............................................. 491 011 00 APU inlet door is not in commanded position.
APU OIL QTY .......................................... 499 001 00 APU oil quantity low level sensor detects less than 3.5 quarts or sensor failure.
APU REMOTE SHUTDOWN .................................. 491 003 00 APU remote shutdown circuit is latched, preventing APU starting or running. Reset by pressing fire overheat test switch.
EICAS STATUS MESSAGES
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MESSAGE/DESCRIPTION___________________ FAULT CODE
APU START SYS ........................................ 494 011 00 APUC detected failure in the Electric Starter, Fuel Scheduling, Ignition, or Lube Deprime systems or no signal from ELMS to the APUC.
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