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Abnormal operation 18/32
As you can see, the APU has shutdown
by itself.
An automatic shutdown can also occur
for other reasons, for example over speed,
slow start, low oil pressure,etc.
The PF will ask you to perform the
ECAM actions.
Perform ECAM action.
APU MENU Abnormal operation 19/32
As you can see, the APU has shutdown
by itself.
An automatic shutdown can also occur
for other reasons, for example over speed,
slow start, low oil pressure,etc.
The PF will ask you to perform the
ECAM actions.
No. Press the APU MASTER switch.
APU MENU Abnormal operation 20/32
As you can see, the APU has shutdown
by itself.
An automatic shutdown can also occur
for other reasons, for example over speed,
slow start, low oil pressure,etc.
The PF will ask you to perform the
ECAM actions.
No. Press the APU MASTER switch.
APU MENU
Abnormal operation 21/32
Observe that the blue ON light in the MASTER
SW pb, and the FLAP OPEN indication on the
ECAM have disappeared indicating that the APU
flap is fully closed.
The abnormal procedure is complete, the APU
system is analyzed.
After review and confirmation from the PF...
Clear APU.
APU MENU Abnormal operation 22/32
No. Press either CLR key.
Observe that the blue ON light in the MASTER
SW pb, and the FLAP OPEN indication on the
ECAM have disappeared indicating that the APU
flap is fully closed.
The abnormal procedure is complete, the APU
system is analyzed.
After review and confirmation from the PF...
APU MENU Abnormal operation 23/32
Observe that the blue ON light in the MASTER
SW pb, and the FLAP OPEN indication on the
ECAM have disappeared indicating that the APU
flap is fully closed.
The abnormal procedure is complete, the APU
system is analyzed.
After review and confirmation from the PF...
No. Press either CLR key.
APU MENU
Abnormal operation 24/32
The STATUS page is displayed.
The inoperative system is the APU.
After review and confirmation from the PF...
Clear STATUS.
APU MENU Abnormal operation 25/32
No. Press the STS key or either CLR key.
The STATUS page is displayed.
The inoperative system is the APU.
After review and confirmation from the PF...
APU MENU Abnormal operation 26/32
No. Press the STS key or either CLR key.
The STATUS page is displayed.
The inoperative system is the APU.
After review and confirmation from the PF...
APU MENU
Abnormal operation 27/32
ECAM action completed.
The STS reminder is displayed on the
E/WD.
Note : automatic shutdown protection is
available throughout the flight.
Lets now look at a situation which is
similar to an APU AUTO SHUTDOWN but
more critical, the APU EMERGENCY
SHUTDOWN.
APU MENU
Abnormal operation 28/32
If, in a same situation, an APU fire is
detected on the ground, an APU EMER
SHUTDOWN occurs and the APU fire
extinguisher bottle is automatically discharged
(both without crew action).
This will not happen in flight.
APU MENU Abnormal operation 29/32
An APU emergency shutdown also occurs :
• when the APU SHUT OFF pb on the external
power panel is pressed,
• or when the APU FIRE pb on the FIRE panel
is pressed.
In both cases, the fire extinguisher bottle is
not automatically discharged.
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APU MENU Abnormal operation 30/32
On the ground :
• an APU AUTO SHUT DOWN
occurs for a reason other than a fire
or when APU parameters are
exceeded.
• if a fire is detected, an APU
EMER SHUT DOWN occurs with
automatic extinguishing.
In flight :
• an APU AUTO SHUT DOWN occurs for
the same reasons.
• If there is a fire, the APU EMER SHUT
DOWN procedure is displayed at the end
of the APU FIRE procedure. There is no
automatic extinguishing.
APU MENU
Abnormal operation 31/32
Now let’s look at the remaining
indications that you could see on the
ECAM page.
The LOW OIL LEVEL advisory pulses
in green if the APU oil quantity
approaches its minimum value.
Note : minimum quantity allows normal
APU operation for an additional 60 hours.
APU MENU
Abnormal operation 32/32
When starting the APU, the FUEL LO
PR indication appears amber when an
APU fuel low pressure is detected.
Note : Even though this message is in
amber, it is an advisory.
MMoodduullee ccoommpplleetteedd
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空客a320飞机概述2(87)
