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

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

An engine bleed valve is open.

The APU bleed valve is open.

When engine start is selected.

Correct! Wrong!

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

True.

False.

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 closes.

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

Correct! Wrong!

Bleed air normally comes from the _____ of the engine.

High pressure stage.

Intermediate stage.

Low pressure stage.

Correct! Wrong!

During Normal operation, when would the HP valve open?

With pilot intervention on the overhead panel.

At low thrust settings.

When IP pressure is insufficient for the demand.

At TOGA power.

Correct! Wrong!

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

Medium.

Low.

High.

Correct! Wrong!

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

200 deg.C.

175 deg.C.

150 deg.C.

90 deg.C.

Correct! Wrong!

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

APU overheat or bleed leak.

APU bleed leak.

APU overheat.

Correct! Wrong!

An ECAM caution will also appear.

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

Remain in its current position.

Assume the closed position.

Assume the open position.

Correct! Wrong!

If a Bleed Monitoring Computer (BMC) fails:

All systems associated with the failed BMC also fail.

The associated bleed valves close.

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

Correct! Wrong!

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

Downstream / low / reverse.

Upstream / low / reverse.

Downstream / High / reverse.

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!

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

Automatic cross-bleed valve control.

Engine 1 and APU leak detection.

Overheat detection.

Correct! Wrong!

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

False.

True.

Correct! Wrong!

Temperature regulation is controlled by:

One zone controller and two pack controllers.

Two pack controllers and the BMCs (Bleed Monitoring Computers)

The two BMCs.

Correct! Wrong!

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

The avionics compartment.

The pneumatic duct that is upstream of the packs.

The Mixing unit.

Correct! Wrong!

In normal operation which bleed air source has priority?

APU.

RAM Air.

Ground Air.

Engine Bleed.

Correct! Wrong!

Should both channels fail in a zone controller:

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

Temperature optimization and the backup mode are lost.

The pack is not affected.

Correct! Wrong!

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

True.

False.

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!

When selected ON, the APU bleed air will:

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

Have priority over engine bleed air.

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

Correct! Wrong!

The lavatory/galley extract fan operates:

Continuously when electrical power is available.

Only in flight.

Only on the ground.

Correct! Wrong!

Engine bleed air temperature is controlled by:

Conditioned air from the mixing unit.

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

A pre-cooler that uses fan air.

Correct! Wrong!

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

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

It closes automatically if the system detects an air leak.

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

Correct! Wrong!

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

The BMC detects an overheat or low temperature.

The BMC detects an overheat.

The BMC detects an overheat or low pressure.

Correct! Wrong!

Air bleed from the engines is:

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

Not cooled prior to being used by the systems.

Only cooled in air conditioning part.

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.

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

Engine power has to be increased by the pilot.

The engine spools up automatically.

Push the High Pressure pb on the overhead panel.

Correct! Wrong!

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!

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

APU and Engine 1 leak detection.

Overheat detection.

Overpressure detection.

Correct! Wrong!

The overheat detection system uses a single loop for:

The wings and pylons.

The wings and fuselage.

The pylons and APU.

Correct! Wrong!

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

False.

True.

Correct! Wrong!

Airbus A320 – Pneumatic

Airbus A320 – Pneumatic

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

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

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

Bleed air normally comes from the _____ of the engine.

During Normal operation, when would the HP valve open?

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

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

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

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

If a Bleed Monitoring Computer (BMC) fails:

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

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

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

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

Temperature regulation is controlled by:

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

In normal operation which bleed air source has priority?

Should both channels fail in a zone controller:

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

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.

When selected ON, the APU bleed air will:

The lavatory/galley extract fan operates:

Engine bleed air temperature is controlled by:

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

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

Air bleed from the engines is:

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.

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

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

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

The overheat detection system uses a single loop for:

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

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