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A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR COND / PRESS / VENT
PRESSURIZATION - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-21-20-40 P 4/10
FCOM 19 AUG 10
(5) CAB ALT FT (cabin altitude)
The scale is displayed in white. The analog and digital presentations appear in green, in normal
range.
They appear in red if the cabin altitude goes above 9 550 ft.
The digital presentation pulses if the cabin altitude is between 8 800 ft and 9 550 ft.
(6) Active system indication (SYS 1 or SYS 2)
SYS 1 or SYS 2 appears in green when active and in amber when faulty. When either system
is inactive, its title does not appear.
(7) Safety valve position
SAFETY appears in white and the diagram in green when all safety valves are fully closed.
SAFETY and the diagram appear in amber when at least one valve is not closed.
Note: The safety valves open when the cabin differential pressure is between 8.75 and
8.95 PSI.
(8) Forward outflow valve position
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR COND / PRESS / VENT
PRESSURIZATION - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-21-20-40 P 5/10
FCOM 19 AUG 10
(A) When the valve is operating, normally, the needle appears in green and FWD appears in
white.
Both become amber when the valve :
• opens more than 95 % during flight.
• failes under automatic control.
(B) When the valve is under manual control MAN appears in green.
(9) Aft outflow valve position
Identical to the forward outflow valve.
ECAM CAB PRESS PAGE
Applicable to: ,
(1) LDG ELEV AUTO / MAN
LDG ELEV AUTO : appears in green when the LDG ELEV selector is in AUTO.
Becomes amber if the landing elevation is not transmitted by the
FMGS.
LDG ELEV MAN : appears in green when the LDG ELEV selector is not in AUTO.
Neither appear when the MODE SEL pushbutton switch is in MAN and the VALVE SEL
selector is in BOTH, or when the LDG ELEV selector is faulty.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR COND / PRESS / VENT
PRESSURIZATION - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-21-20-40 P 6/10
FCOM 19 AUG 10
(2) Landing Elevation
Landing elevation selected either automatically by the FMGS or manually by the pilot appears
in green. (But not when the MODE SEL pushbutton is in MAN position and the VALVE SEL is
in BOTH position).
(3) V/S FT/MIN (cabin vertical speed)
The analog and digital presentation appear in green when V/S is in the normal range.
The digital indication pulses, when the V/S is more than 1 800 ft/min in either climb or descent.
(4) ▵P PSI (Cabin differential pressure)
The scale is displayed in white. The analog and digital presentations appear in green when ▵P
is the normal range.
They appear in amber when ▵P ≤ -0.26 PSI or ≥ 8.85 PSI.
The digital presentation pulses if ▵P> 1.5 PSI (resets at 1 PSI) during flight phase 7.
(5) CAB ALT FT (cabin altitude)
The scale is displayed in white. The analog and digital presentations appear in green, in normal
range.
They appear in red if the cabin altitude goes above 9 550 ft.
The digital presentation pulses if the cabin altitude is between 8 800 ft and 9 550 ft.
(6) Active system indication (SYS 1 or SYS 2)
SYS 1 or SYS 2 appears in green when active and in amber when faulty. When either system
is inactive, its title does not appear.
(7) Safety valve position
SAFETY appears in white and the diagram in green when the three safety valves are fully
closed.
SAFETY and the diagram appear in amber when at least one valve is not closed.
Note: The safety valves open when the cabin differential pressure is between 8.75 and
8.95 PSI.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR COND / PRESS / VENT
PRESSURIZATION - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-21-20-40 P 7/10
FCOM 19 AUG 10
(8) Forward outflow valve position
(A) When the valve is operating, normally, the needle appears in green and FWD appears in
white.
Both become amber when the valve :
• opens more than 95 % during flight.
• failes under automatic control.
(B) When the valve is under manual control MAN appears in green.
(9) Aft outflow valve position
Identical to the forward outflow valve.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AIR COND / PRESS / VENT
PRESSURIZATION - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-21-20-40 P 8/10
FCOM 19 AUG 10
ECAM CRUISE PAGE
Applicable to: ALL
(1) LDG ELEV AUTO / MAN
　
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