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selected position.
HOT AIR
FAULT lt
L + R CAB FAN FAULT
Both fan failure.
SINGLE
CHIME
MASTER
CAUT
COND
PACK 1 (2) REGUL FAULT
Failure of the By Pass Valve, or the RAM Air Inlet,
or the Compressor Outlet Temperature sensor or
the Flow Control Valve.
NIL NIL BLEED
NIL
3, 4, 5, 7, 8
To be continued on next page
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR CONDITIONING / PRESSURIZATION / VENTILATION
AIR CONDITIONING - WARNINGS AND CAUTIONS
A318/A319/A320/A321 FLEET DSC-21-10-60 P 3/4
FCOM 19 AUG 10
Continued from previous page
E/WD : FAILURE TITLE
conditions
AURAL
WARNING
MASTER
LIGHT
SD PAGE
CALLED
LOCAL
WARNING
FLT
PHASE
INHIB
LAV + GALLEY FAN FAULT 3, 4, 5,
7, 8, 9
TRIM AIR SYS FAULT
One trim air valve fault, or overpressure
downstream hot air valve.
3, 4, 5, 7, 8
CTL 1 (2) - A (B) FAULT
The lane A (B) of ACSC 1 (2) fails.
NIL
3, 4, 5, 7, 8
MEMO DISPLAY
RAM AIR ON appears in green if the ram air pushbutton switch is ON.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR CONDITIONING / PRESSURIZATION / VENTILATION
AIR CONDITIONING - WARNINGS AND CAUTIONS
Intentionally left blank
A318/A319/A320/A321 FLEET DSC-21-10-60 P 4/4
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR CONDITIONING / PRESSURIZATION / VENTILATION
AIR CONDITIONING - ELECTRICAL SUPPLY
A318/A319/A320/A321 FLEET DSC-21-10-70 P 1/2
FCOM 19 AUG 10
BUS EQUIPMENT LIST
Applicable to:
,
,
MSN,,,,
NORM EMER ELEC
AC DC AC
ESS
DC
ESS HOT
1 lane 1. AC1 DC1
2 AC2 X
2 lane 1. AC1 DC1
AIR COND
SYS CONT
2 AC2 DC2
PACK 1 VALVE CLOSURE SHED
PACK 2 VALVE CLOSURE DC2
AIR COND
RAM AIR INLET X
BUS EQUIPMENT LIST
Applicable to:
NORM EMER ELEC
AC DC AC
ESS
DC
ESS HOT
1 PRIM.
SEC.
AC1
AC1
DC1
PACK CONT 2 PRIM. DC1
SEC.
AC2
AC2
DC2
DC2
ZONE CONT PRIM.
SEC.
AC1
AC2
DC1
DC2
PACK 1 VALVE CLOSURE SHED
PACK 2 VALVE CLOSURE DC2
AIR COND
RAM AIR INLET X
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR CONDITIONING / PRESSURIZATION / VENTILATION
AIR CONDITIONING - ELECTRICAL SUPPLY
Intentionally left blank
A318/A319/A320/A321 FLEET DSC-21-10-70 P 2/2
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR CONDITIONING / PRESSURIZATION / VENTILATION
PRESSURIZATION - GENERAL
A318/A319/A320/A321 FLEET DSC-21-20-10 P 1/4
FCOM 19 AUG 10
GENERAL
Applicable to:
The cabin pressurization system has four general functions :
Ground function : Fully opens ‐ the outflow valve on ground.
‐ Prepressurization : During takeoff, increases cabin pressure to avoid a surge in cabin pressure
during rotation.
‐ Pressurization in flight : Adjusts cabin altitude, and rate of change to provide passengers with a
comfortable flight.
Depressurization : After touchdown, gradually releases residual ‐ cabin overpressure before the
ground function fully opens the outflow valve.
The system consists of :
‐ Two Cabin Pressure Controllers (CPC)
‐ One outflow valve, with an actuator that incorporates three motors (two for automatic operation,
one for manual operation)
‐ One control panel
‐ Two safety valves
Any one of the three independent electric motors may power the outflow valve.
Normally, one of the two cabin pressure controllers operates the outflow valve by means of its
associated automatic motor.
In case of ditching, an override switch on the control panel allows the flight crew to close the outflow
valve and all valves below the flotation line.
The flight crew can set the system to operate automatically, semi-automatically, or manually.
In normal operation, cabin pressurization is fully automatic.
GENERAL
Applicable to:
,
,
MSN,,,,
The cabin pressurization system has four general functions :
‐ Ground function : Fully opens the outflow valve on ground.
‐ Prepressurization : During takeoff, increases cabin pressure to avoid a surge in cabin pressure
during rotation.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR CONDITIONING / PRESSURIZATION / VENTILATION
　
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