Airbus A330 - APU

Before the APU starter is energized:

The APU bleed valve pb must be deselected.

Both APU fuel pumps must be selected On.

The APU intake flap must be fully open.

Correct! Wrong!

The ECB (Electronic Control Box) controls the electric starter. The starter engages if the air intake is fully open and provided the MASTER SW pushbutton is ON.

True.

False.

Correct! Wrong!

The ECB (Electronic Control Box) controls the electric starter. The starter engages if the air intake is fully open and provided the MASTER SW and the START pushbuttons are ON.

APU start is permitted throughout the normal flight envelope, except when APU battery only is supplying.

True.

False.

Correct! Wrong!

The ECB (Electronic Control Box) controls the APU BLEED valves. If APU BLEED is set to ON, the bleed valve closes at _ when climbing, and reopens at _ when descending.

20,000 ft and 18,000 ft.

22,000 ft and 20,000 ft.

25,000 ft and 23,000 ft.

Correct! Wrong!

The AVAIL Indication is in green, when APU rpm (N) is _____.

Available.

Ready to be connected.

Above 95 %.

Correct! Wrong!

APU master switch - The Amber FAULT light comes on, and a Caution is displayed on the ECAM. What does it mean?

An APU shutdown has occurred.

The APU is running with the Ground Power Unit (GPU) connected.

An APU fault has occurred without auto shutdown.

Correct! Wrong!

On APU External Power panel (under the nose fuselage), the ground staff can:

Connect the APU.

Stop the APU by pressing the APU SHUT OFF pb in case of emergency.

Stop the APU.

Correct! Wrong!

In flight, in case of APU fire:

The APU shutdown and the fire extinguisher discharge is fully automatic.

The flight crew has to stop APU by pressing the APU master switch and to use the APU FIRE handle.

The flight crew has to use the APU FIRE pb.

Correct! Wrong!

Which one of the following statements is true?

The APU is supplied by aircraft fuel system via two APU fuel pumps.

The APU is supplied by its own fuel reservoir.

The APU is supplied by the engines fuel pumps.

Correct! Wrong!

On ground with no GPU, APU start procedure requires:

The Engine bleed air to be On.

All three aircraft batteries to be On.

Only the APU battery to be On.

Correct! Wrong!

APU MASTER SW pb-sw - This pushbutton controls the electric supply for APU operation, and its protective features. It also controls the start and shutdown sequences. This amber FAULT light comes on, and a caution appears on the ECAM, when an automatic APU shutdown occurs. In case of automatic, non emergency shutdown, the air inlet flap closes _____ after the APU speed is lower than 7 %.

15 minutes.

5 minutes.

2 minutes.

Correct! Wrong!

If an automatic, non-emergency shutdown happens on ground, the 15 min countdown starts after liftoff.

During takeoff and go-around, the APU can supply pneumatics:

To increase bleed pressure at high engine RPM.

To increase aircraft performance during critical phases of flight.

To reduce pressurization changes for greater passager comfort.

Correct! Wrong!

The APU may obtain power for starting from the batteries specifically assigned to the APU, or in combination with the external power, or normal aircraft supply.

False.

True.

Correct! Wrong!

In case of APU fire on ground:

The APU will shutdown and the fire extinguisher discharge is fully automatic.

The ground crew has to press the APU SHUT OFF pb On.

The APU will shutdown, but cockpit crew supervision is necessary.

Correct! Wrong!

The APU is supplied from the trim tank transfer line. The ECB (Electronic Control Box) controls the fuel flow.

False.

True.

Correct! Wrong!

Airbus A330 – APU

Quiz

Airbus A330 - APU

Before the APU starter is energized:

The ECB (Electronic Control Box) controls the electric starter. The starter engages if the air intake is fully open and provided the MASTER SW pushbutton is ON.

APU start is permitted throughout the normal flight envelope, except when APU battery only is supplying.

The ECB (Electronic Control Box) controls the APU BLEED valves. If APU BLEED is set to ON, the bleed valve closes at _____ when climbing, and reopens at _____ when descending.

The AVAIL Indication is in green, when APU rpm (N) is _____.

APU master switch - The Amber FAULT light comes on, and a Caution is displayed on the ECAM. What does it mean?

On APU External Power panel (under the nose fuselage), the ground staff can:

In flight, in case of APU fire:

Which one of the following statements is true?

On ground with no GPU, APU start procedure requires:

During takeoff and go-around, the APU can supply pneumatics:

The APU may obtain power for starting from the batteries specifically assigned to the APU, or in combination with the external power, or normal aircraft supply.

In case of APU fire on ground:

The APU is supplied from the trim tank transfer line. The ECB (Electronic Control Box) controls the fuel flow.

The ECB (Electronic Control Box) controls the APU BLEED valves. If APU BLEED is set to ON, the bleed valve closes at _ when climbing, and reopens at _ when descending.