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FCOM 19 AUG 10
CAB PR SYS (1+2) FAULT
(BOTH SYSTEMS AFFECTED)
Applicable to: MSN ,
,
�� If one door not locked closed on ground:
CAB PR INHIB BY DOORS
�� In all other cases:
L2 Due to the slow closure of the outflow valve in manual pressurization mode and depending on
the failure, the following procedure may not avoid a depressurization.
L1MODE SEL............................................................................................................................MAN
MAN VALVE SEL.................................................................................................................BOTH
MAN V/S CTL................................................................................................................AS RQRD
L2Monitor cabin V/S and cabin altitude frequently and adjust as necessary.
Maintain aircraft altitude at or above cabin altitude. It may take 10 s in manual mode before the
crew notices a change of the outflow valve position.
The two safety valves limit ΔP to 8.85 PSI.
To be continued on next page
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
ABNORMAL AND EMERGENCY PROCEDURES
AIR CONDITIONING / PRESSURIZATION / VENTILATION
A330/A340 FLEET PRO-ABN-21 P 39/70
FCOM 19 AUG 10
CAB PR SYS (1+2) FAULT (Cont'd)
(BOTH SYSTEMS AFFECTED)
L12
STATUS
MAN CAB PR CTL:
TGT V/S: CLIMB 500 FT/MIN
TGTV/S: DES 300 FT/MIN
A/C FL CAB ALT TGT
410 8000
350 6500
300 5000
250 2500
<200 0
�� DURING FINAL APPR:
MAN V/S CTL........................................................... FULL UP
When on intermediate approach (below 2 500 ft),adjust ΔP =
0.
When ΔP is zero, select FULL UP to fully open both outflow
valves.
CAUTION Check that ΔP is zero before opening doors.
INOP SYS
CAB PR 1 + 2
CAB PR LO DIFF PR
(IN FLIGHT)
Applicable to: ALL
EXPECT HI CAB RATE
A/C V/S................................................................................................................................REDUCE
L2 This line is not displayed in case of an Emergency Descent, due to Excessive Cabin Altitude.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
ABNORMAL AND EMERGENCY PROCEDURES
AIR CONDITIONING / PRESSURIZATION / VENTILATION
A330/A340 FLEET PRO-ABN-21 P 40/70
FCOM 19 AUG 10
CAB PR SAFETY VALVE OPEN
Applicable to:
L2 The failure is probably due to an overpressure
L1 �� IF DIFF PR ABV 8.7 PSI:
MODE SEL............................................................................................................................MAN
MAN VALVE SEL.................................................................................................................BOTH
MAN V/S CTL................................................................................................................AS RQRD
L2 If overpressure is confirmed, reduce cabin ΔP.
For manual control, refer to the CAB PR SYS 1 + 2 FAULT status.
It may take 10 s in manual mode, before the crew notices a change in the outflow valve
position.
L1 �� IF UNSUCCESSFUL:
A/C FL.............................................................................................................................REDUCE
CAB PR SAFETY VALVE OPEN
Applicable to: ,
L2 The safety valve has opened due to cabin overpressure, or negative differential pressure.
L1 �� IF DIFF PR ABV 8.7 PSI:
MODE SEL............................................................................................................................MAN
MAN VALVE SEL.................................................................................................................BOTH
MAN V/S CTL................................................................................................................AS RQRD
L2 If overpressure is confirmed, reduce cabin ΔP.
For manual control, refer to the CAB PR SYS 1 + 2 FAULT status.
It may take 10 s in manual mode, before the crew notices a change in the outflow valve
position.
L1 �� IF UNSUCCESSFUL:
A/C FL...................................................................................................................... REDUCE
�� IF DIFF PR BELOW 0 PSI:
EXPECT HI CAB RATE
A/C V/S........................................................................................................................... REDUCE
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
ABNORMAL AND EMERGENCY PROCEDURES
AIR CONDITIONING / PRESSURIZATION / VENTILATION
A330/A340 FLEET PRO-ABN-21 P 41/70
FCOM 19 AUG 10
CAB PR LDG ELEV FAULT
　
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