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Both engines fail, or GREEN + BLUE LO LVL, or GREEN + YELLOW LO LVL.
OVERHEAD PANEL (CONT'D)
Applicable to:
(1) LEAK MEASUREMENT VALVES pushbutton (to be used on ground only)
OFF : The corresponding electrohydraulic valve closes, and shuts off hydraulic supply to
the primary flight controls. This function and the OFF light are inhibited, when the
aircraft speed is greater than 100 kt.
Note: On ground, the yellow valve automatically closes, when the cargo door is activated (to
avoid inadvertent movement of the flight control surfaces).
The OFF light comes on.
OVERHEAD PANEL (CONT'D)
Applicable to: ,
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
HYDRAULIC
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-29-20 P 7/16
FCOM 19 AUG 10
(1) LEAK MEASUREMENT VALVES pushbutton (to be used on ground only)
OFF : The corresponding electrohydraulic valve closes, and shuts off hydraulic supply
to the primary flight controls. This function is inhibited, when the aircraft speed is
greater than 100 kt.
Note: 1. Even if the function is inhibited in flight : If the flight crew inadvertently presses
this pushbutton, the OFF light will still come on to advise the crew that the
electrohydraulic valves will close at landing, when the aircraft speed is less than
100 kt.
2. On ground, the yellow valve automatically closes, when the cargo door is activated
(to avoid inadvertent movement of the flight control surfaces).
The OFF light comes on.
ECAM HYD PAGE
Applicable to:
(1) Reservoir quantity
This indication is in green, unless the fluid level goes below the warning level, in which case it
becomes amber.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
HYDRAULIC
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-29-20 P 8/16
FCOM 19 AUG 10
Note: The nominal filling range indication is corrected for fluid temperature effect.
It is normally green. When temperature information is unavailable, it is no longer
corrected and the indication becomes white.
(2) Reservoir LO AIR PRESS
It is amber, and an associated caution appears on the ECAM, if the air pressure for the
indicated reservoir drops below normal.
(3) Reservoir OVHT
It is amber, and an associated caution appears on the ECAM, if the temperature of the
returning hydraulic fluid, at the inlet to its reservoir, is above normal.
(4) FIRE SHUTOFF VALVE
Crossline - Amber : The valve is fully closed.
In line - Green : The valve is partially closed.
(5) ENG PUMPS control and low pressure indication
In line - Green : The designated PUMP's pushbutton is on, and hydraulic pressure is
normal.
Crossline - Amber : The designated PUMP's pushbutton is off.
"LO" - Amber : The designated PUMP's pushbutton is on, and hydraulic pressure is
low.
(6) PUMP
It is white, and becomes amber when the corresponding engine’s N2 is below idle.
(7) ELEC
It is normally white. It becomes amber if the associated power supply fails, or if the pump is
commanded on and does not provide normal pressure.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
HYDRAULIC
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-29-20 P 9/16
FCOM 19 AUG 10
(8) ELEC PUMP control
▹􀀃White􀀃:􀀃The􀀃electric􀀃pump􀀃is􀀃not􀀃commanded.􀀃
▹􀀃Amber􀀃:􀀃The􀀃electric􀀃pump􀀃is􀀃off.􀀃
Green : The electric pump is on.
Amber : The electric pump is on and the system has low pressure.
(9) OVHT
It is amber, if the electric pump for that system overheats. This indication remains displayed on
the ECAM, even if the overheat has stopped, and until the system is reset on ground.
(10) System label (SYS LO PR sw)
PRESS > 1 750 PSI
(press increasing)
PRESS < 1 450 PSI
(press decreasing)
GREEN white amber
▹􀀃green􀀃amber􀀃
(11) System pressure
This legend, normally green, becomes amber when system pressure is below 1 450 PSI.
(12) RAT control
◃ RAT MEANING
White white RAT stowed
Full green white RAT not stowed and RPM > 3 000
White amber RAT fully stowed and stowing pressure applied
Full amber amber RAT not stowed and RPM < 3 000
(13) RPM indication
This appears green when the rotation speed of the RAT is above 100 rpm
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
HYDRAULIC
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-29-20 P 10/16
FCOM 19 AUG 10
　
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