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When N = 95 %, the ON light on the START pushbutton goes off and AVAIL
comes on in green.
The APU may now supply bleed air and electrical power to the aircraft
systems.
10 s later, the APU page disappears from the ECAM display.
AVAIL lt : This light comes on green, when N reaches 95 %.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
APU
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-49-20 P 3/8
FCOM 19 AUG 10
EXTERNAL CONTROLS
Applicable to:
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
APU
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-49-20 P 4/8
FCOM 19 AUG 10
EXTERNAL CONTROLS
Applicable to: ,
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
APU
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-49-20 P 5/8
FCOM 19 AUG 10
ECAM APU PAGE
Applicable to: ,
(1) AVAIL indication
It is in green, when APU N is above 95 %.
(2) APU bleed valve position
It is only displayed, if the APU MASTER SW is ON/R.
In line – Green : The APU valve is fully open.
Crossline – Green : The APU valve is not fully open, and APU BLEED pushbutton is
OFF.
Crossline – Amber : The APU valve is not fully open, if APU BLEED pushbutton is ON.
(3) APU bleed air pressure
This box displays the relative bleed air pressure in green.
It shows an amber XX, when ADIRS 1 is not available or selected OFF.
(4) APU GEN line contactor indication
It is in green, when the APU GEN line contactor is closed.
It is in white, if the line contactor is open.
(5) APU GEN
It is identical to the APU GEN parameters on the ELEC page.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
APU
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-49-20 P 6/8
FCOM 19 AUG 10
(6) FUEL LO PR
It is in amber, if APU fuel low pressure is detected.
(7) FLAP OPEN
Displayed in green, when the APU air intake flap is fully open (MASTER SW is ON).
(8) APU N
‐ Displays the APU speed in green.
‐􀀃It􀀃becomes􀀃red,􀀃when􀀃N􀀃≥􀀃107 %.
(9) APU EGT
‐ It displays the APU EGT (needle and digital indication) in green.
‐ It pulses, when the ECB detects an advisory.
‐􀀃It􀀃becomes􀀃red,􀀃when􀀃EGT􀀃≥􀀃RED􀀃EGT􀀃LIM*See􀀃is􀀃associated􀀃with􀀃an􀀃automatic􀀃shutdown.
* ECB calculates the RED EGT LIM and transmits it to the ECAM. It is equal to the lower
border of the red sector. It is a function of N during start, and a function of ambient
temperature and pressure when the APU is running.
Maximum EGT during start : 1 250 °C (refers to 0 % APU speed).
Maximum EGT with APU running : 650 °C (Sea level, standard day).
(10) LOW OIL LEVEL
This advisory is displayed, if the ECB detects a low APU oil level, when the aircraft is on
ground and the APU is not running.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
APU
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-49-20 P 7/8
FCOM 19 AUG 10
ECAM APU PAGE
Applicable to:
(1) AVAIL indication
It is in green, when APU N is above 95 %.
(2) APU bleed valve position
It is only displayed, if the APU MASTER SW is ON/R.
In line – Green : The APU valve is fully open.
Crossline – Green : The APU valve is not fully open, and APU BLEED pushbutton is
OFF.
Crossline – Amber : The APU valve is not fully open, if APU BLEED pushbutton is ON.
(3) APU bleed air pressure
This box displays the relative bleed air pressure in green.
It shows an amber XX, when ADIRS 1 is not available or selected OFF.
(4) APU GEN line contactor indication
It is in green, when the APU GEN line contactor is closed.
It is in white, if the line contactor is open.
(5) APU GEN
It is identical to the APU GEN parameters on the ELEC page.
(6) FUEL LO PR
It is in amber, if APU fuel low pressure is detected.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
APU
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-49-20 P 8/8
FCOM 19 AUG 10
(7) FLAP OPEN
Displayed in green, when the APU air intake flap is fully open (MASTER SW is ON).
(8) APU N
‐ Displays the APU speed in green.
􀀃It􀀃becomes􀀃‐ red,􀀃when􀀃N􀀃≥􀀃107􀀃%.
(9) APU EGT
‐ It displays the APU EGT (needle and digital indication) in green.
‐ It pulses, when the ECB detects an advisory.
　
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