Airbus A320 – Pneumatic - SmartCockpit - Airline training guides, Aviation, Operations, Safety

Air is normally bled from the intermediate pressure stage (IP) of engine’s high-pressure (HP) compressor to minimize fuel penalty.

False.

True.

Correct! Wrong!

What happens when pressure and temperature are not sufficient to supply the corresponding engine bleed valve?

HP valve closes, IP stage remains in the same configuration.

HP valve opens, IP stage remains in the same configuration.

HP valve closes.

Correct! Wrong!

If bleed air is being supplied by the APU or if one pack fails, pack flow will go to _____ rate.

High.

Medium.

Low.

Correct! Wrong!

BMC2 takes over all monitoring functions if BMC1 fails except for:

Overpressure detection.

Overheat detection.

APU and Engine 1 leak detection.

Correct! Wrong!

A check valve near the crossbleed duct protects the APU, when bleed air comes from another source.

True.

False.

Correct! Wrong!

A leak detection system detects any overheating in the vicinity of hot air ducts.

True.

False.

Correct! Wrong!

For what condition will the APU BLEED FAULT light illuminate amber?

APU bleed leak.

APU overheat.

APU overheat or bleed leak.

Correct! Wrong!

An ECAM caution will also appear.

With the loss of pneumatic system pressure, the engine bleed valve will:

Assume the closed position.

Assume the open position.

Remain in its current position.

Correct! Wrong!

In normal operation which bleed air source has priority?

APU.

Engine Bleed.

Ground Air.

RAM Air.

Correct! Wrong!

If a Bleed Monitoring Computer (BMC) fails:

The associated bleed valves close.

The remaining BMC will automatically assume most of the failed BMC’s functions.

All systems associated with the failed BMC also fail.

Correct! Wrong!

Temperature regulation is controlled by:

One zone controller and two pack controllers.

The two BMCs.

Two pack controllers and the BMCs (Bleed Monitoring Computers)

Correct! Wrong!

If APU Bleed is ON and the crossbleed valve is shut, the Engine bleed valve 2 remains open.

True.

False.

Correct! Wrong!

The pneumatic system supplies high-pressure air for air conditioning, engine starting, wing anti-icing, water pressurization and hydraulic reservoir pressurization.

False.

True.

Correct! Wrong!

Temperature regulation is achieved by the precooler which regulates and limits the temperature at:

90 deg.C.

150 deg.C.

200 deg.C.

175 deg.C.

Correct! Wrong!

The APU BLEED pb-sw controls the APU bleed valve. When the flight crew selects ON with the pushbutton, APU bleed air supplies the pneumatic system, if the APU speed is _____. This opens the crossbleed valve and closes the engine bleed automatically.

Above 98% but less than 100%.

Above 95 %.

Normal (above 90% RPM).

Correct! Wrong!

Bleed air normally comes from the _____ of the engine.

Intermediate stage.

High pressure stage.

Low pressure stage.

Correct! Wrong!

The pressure regulating and shutoff valve will close if ___ pressure is _ or ___ airflow occurs.

Downstream / High / reverse.

Downstream / low / reverse.

Upstream / low / reverse.

Correct! Wrong!

The lavatory/galley extract fan operates:

Only in flight.

Only on the ground.

Continuously when electrical power is available.

Correct! Wrong!

In automatic mode, the crossbleed valve opens when the system is using APU bleed air.

It closes automatically if the system detects an air leak.

It closes if the system detects an air leak (except in flight).

It closes if the system detects an air leak (except during engine start).

Correct! Wrong!

The overheat detection system uses a single loop for:

The pylons and APU.

The wings and pylons.

The wings and fuselage.

Correct! Wrong!

In flight if the air pressure is insufficient even with the HP valve open:

Engine power has to be increased by the pilot.

Push the High Pressure pb on the overhead panel.

The engine spools up automatically.

Correct! Wrong!

Engine Bleed Indications – The Precooler outlet temperature is normally in green. It becomes amber, if:

The BMC detects an overheat.

The BMC detects an overheat or low pressure.

The BMC detects an overheat or low temperature.

Correct! Wrong!

During Normal operation, when would the HP valve open?

At TOGA power.

At low thrust settings.

When IP pressure is insufficient for the demand.

With pilot intervention on the overhead panel.

Correct! Wrong!

Each bleed valve is electrically operated and controlled by its associated BMC (Bleed Monitoring Computer).

False.

True.

Correct! Wrong!

Each bleed valve is pneumatically operated and controlled electrically by its associated BMC.

The crossbleed valve has three electric motors: one for the automatic mode, one for the manual mode and one for the degraded mode.

True.

False.

Correct! Wrong!

The crossbleed valve has two electric motors: one for the automatic mode and one for the manual mode.

Should both channels fail in a zone controller:

Temperature optimization and the backup mode are lost.

Temperature optimization is still available for that zone from another controller.

The pack is not affected.

Correct! Wrong!

When selected ON, the APU bleed air will:

Supply bleed air only if the X BLEED selector is selected OPEN.

Supply bleed air if the ENG BLEED pbs are selected OFF.

Have priority over engine bleed air.

Correct! Wrong!

If BMC1 (Bleed Monitoring Computer) fails BMC2 takes over all monitoring functions except:

Overheat detection.

Engine 1 and APU leak detection.

Automatic cross-bleed valve control.

Correct! Wrong!

Recirculation fans in the air conditioning system direct filtered cabin air to which area?

The pneumatic duct that is upstream of the packs.

The Mixing unit.

The avionics compartment.

Correct! Wrong!

Engine bleed air temperature is controlled by:

Conditioned air from the Bleed Monitoring Computers (BMC1 and BMC2).

Conditioned air from the mixing unit.

A pre-cooler that uses fan air.

Correct! Wrong!

The AUTO position of the X BLEED selector opens the crossbleed if:

The APU bleed valve is open.

An engine bleed valve is open.

When engine start is selected.

Correct! Wrong!

When engine and wing anti-ice are in use, and a BMC detects a bleed leak:

The wing anti-ice on the associated side will be lost, and the engine anti-ice on the associated side will continue to function.

The wing and engine anti-ice on the associated side will be lost.

Only the engine anti-ice on the associated side will be lost.

Correct! Wrong!

Air bleed from the engines is:

Cooled in a heat exchanger by cooling air bleed from the Fan section.

Only cooled in air conditioning part.

Not cooled prior to being used by the systems.

Correct! Wrong!

Airbus A320 – Pneumatic

Airbus A320 – Pneumatic

Air is normally bled from the intermediate pressure stage (IP) of engine’s high-pressure (HP) compressor to minimize fuel penalty.

What happens when pressure and temperature are not sufficient to supply the corresponding engine bleed valve?

If bleed air is being supplied by the APU or if one pack fails, pack flow will go to _____ rate.

BMC2 takes over all monitoring functions if BMC1 fails except for:

A check valve near the crossbleed duct protects the APU, when bleed air comes from another source.

A leak detection system detects any overheating in the vicinity of hot air ducts.

For what condition will the APU BLEED FAULT light illuminate amber?

With the loss of pneumatic system pressure, the engine bleed valve will:

In normal operation which bleed air source has priority?

If a Bleed Monitoring Computer (BMC) fails:

Temperature regulation is controlled by:

If APU Bleed is ON and the crossbleed valve is shut, the Engine bleed valve 2 remains open.

The pneumatic system supplies high-pressure air for air conditioning, engine starting, wing anti-icing, water pressurization and hydraulic reservoir pressurization.

Temperature regulation is achieved by the precooler which regulates and limits the temperature at:

The APU BLEED pb-sw controls the APU bleed valve. When the flight crew selects ON with the pushbutton, APU bleed air supplies the pneumatic system, if the APU speed is _____. This opens the crossbleed valve and closes the engine bleed automatically.

Bleed air normally comes from the _____ of the engine.

The pressure regulating and shutoff valve will close if _____ pressure is _____ or _____ airflow occurs.

The lavatory/galley extract fan operates:

In automatic mode, the crossbleed valve opens when the system is using APU bleed air.

The overheat detection system uses a single loop for:

In flight if the air pressure is insufficient even with the HP valve open:

Engine Bleed Indications – The Precooler outlet temperature is normally in green. It becomes amber, if:

During Normal operation, when would the HP valve open?

Each bleed valve is electrically operated and controlled by its associated BMC (Bleed Monitoring Computer).

The crossbleed valve has three electric motors: one for the automatic mode, one for the manual mode and one for the degraded mode.

Should both channels fail in a zone controller:

When selected ON, the APU bleed air will:

If BMC1 (Bleed Monitoring Computer) fails BMC2 takes over all monitoring functions except:

Recirculation fans in the air conditioning system direct filtered cabin air to which area?

Engine bleed air temperature is controlled by:

The AUTO position of the X BLEED selector opens the crossbleed if:

When engine and wing anti-ice are in use, and a BMC detects a bleed leak:

Air bleed from the engines is:

The pressure regulating and shutoff valve will close if ___ pressure is _ or ___ airflow occurs.