T/F: When the APU MASTER SW displays a blue ON light,
and the APU START pb displays a green AVAIL light, the
True
APU is running and available to supply electrical power
and bleed air.
What does the depicted APU panel indicate?
-The APU is running and ready to supply bleed air or
electrical power.
There has been an automatic shutdown, emergency shut-
-The APU start sequence is in progress.
down, or failure of the APU.
-The APU is ready to start.
-There has been an automatic shutdown, emergency
shutdown, or failure of the APU.
With the APU running, what happens if you press the APU
MASTER SW pb?
-The blue ON light extinguishes, the APU bleed valve clos-
es, and the APU shuts down after a cooling down period.
-The APU immediately shuts down, and an amber fault
light illuminates in the APU MASTER SW.
The blue ON light extinguishes, the APU bleed valve closes,
-The blue ON light extinguishes, and, once the green
and the APU shuts down after a cooling down period.
FLAP OPEN memo extinguishes, you should press the
APU START pb to initiate the remainder of the shutdown
process.
-The blue ON light and the green AVAIL light remain il-
luminated until the automatic shutdown process is com-
plete.
What does an amber FAULT light in the APU MASTER SW
indicate?
-Someone initiated an emergency shutdown of the APU
by pressing the APU MASTER SW when the APU was run-
ning.
-APU power or APU bleed air has an associated fault. You
, A350 ESV ENGINES Test Questions with Answers Rated A
should check the ECAM messages to determine which one
is faulty and which one is available for use.
-The APU has failed, an automatic shutdown has occurred,
The APU has failed, an automatic shutdown has occurred,
or an emergency shutdown has occurred. You should
or an emergency shutdown has occurred. You should
check for an associated ECAM alert to determine the type
check for an associated ECAM alert to determine the type
of shutdown or failure.
of shutdown or failure.
-The APU has not yet been started. The amber FAULT light
is a normal indication when you first enter the cockpit if
the aircraft is running on external power.
T/F: The blue ON light in the APU START pb means that the
APU has successfully started, and it is providing electrical False
power and bleed air to the aircraft systems.
According to the ECAM APU systems display page shown
here:
-The APU is running, but only pneumatics are being
used.
-The APU is available for electric or pneumatic use, but
neither is being used at this time. The APU is running and providing both electrics and pneu-
-The red indications on the APU N speed and EGT mean matics.
that the APU is operating out of limits, and you should shut
down the APU. The associated ECAM procedure will also
direct that.
-The APU is running and providing both electrics and
pneumatics.
T/F: The APU AVAIL ECAM memo means that the APU is
True
running and able to supply electrical power and bleed air.
What do the ditterent air intake flap indications mean on
the APU system display page?
-FLAP OPEN indicates that the air intake flap is fully open.
FLAP CLOSED indicates that the air intake flap is fully