All language subtitles for [SubtitleTools.com] 49. APU làm việc bất thường-en-US

This is a demonstration of an
APU auto shutdown as a result of

high EGT.

The aircraft has left the runway
and the APU needs to be started.

Select the APU master switch to
initiate the start cycle.

Now select the APU start switch.

You hear the chime and see the
Master caution extinguish the

Master Caution on the engine
warning display.

Read the title of the failure.

The ECAM APU page is
automatically displayed.

The ECAM Caution APU auto
Shutdown appears amber to

indicate that the APU has
initiated an automatic shutdown.

In this example, the EGT has
exceeded the maximum limit.

Notice the red EGT indication on
the ECAM APU page.

On the APU control panel, the
fault light is eliminated on the

master switch.

This provides a cross check of
the ECAM and locates the push

button to be activated in the
procedure.

The APU has completed its
automatic shutdown.

An automatic shutdown can also
occur for other reasons, for

example, overspeed, slow start,
low oil pressure, etcetera.

Now perform ECAM action.

Turn off the APU master switch.

Note that the blue on light in
the master switch and the flap

open indication on the ECAM have
disappeared, indicating that the

APU is fully shut down.

The abnormal procedure is
complete.

After review and confirmation
clear APU, The status page is

displayed.

The inoperative system is the
APU.

After review and confirmation,
clear status ECAM complete

screens normal.

The status reminder is displayed
on the Engine warning display

note.

Automatic shutdown protection is
available throughout the flight.

Let's now look at a situation
which is similar to an APU auto

shutdown, but more critical, the
APU emergency shutdown.

If an APU fire is detected on
the ground, an APU emergency

shutdown occurs and the APU fire
extinguisher bottle is

automatically discharged.

There is no crew action to be
taken.

This will not happen in flight.

The crew must shut down the APU
and fight an airborne APU fire.

An APU emergency shutdown also
occurs when the APU shut off

push button on the external
power panel is pressed or when

the APU fire push button on the
fire panel is pressed.

However, in neither case is the
fire bottle automatically

discharged on the ground.

An auto shutdown.

When APU parameters are
exceeded, an emergency shutdown

with automatic extinguishing
occurs.

If an APU fire is detected in
flight, an auto shutdown will

occur for the same reasons as on
the ground.

If an APU fire occurs, the crew
must take action.

There is no automatic shutdown
or extinguishing.

The APU emergency shutdown
procedure is displayed at the

end of the APU fire procedure.

There are several other
indications that could appear on

the APU 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.

When starting the APU, the fuel
low pressure indication appears

in amber when an APU fuel low
pressure is detected.

Note, even though this message
is in amber, it is an advisory.