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

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

The avionics compartment.

The Mixing unit.

The pneumatic duct that is upstream of the packs.

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!

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

Low.

Medium.

High.

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 overheat detection system uses a single loop for:

The wings and fuselage.

The wings and pylons.

The pylons and APU.

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 95 %.

Normal (above 90% RPM).

Above 98% but less than 100%.

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 temperature.

The BMC detects an overheat or low pressure.

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!

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!

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!

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

False.

True.

Correct! Wrong!

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

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 in flight).

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

It closes automatically if the system detects an air leak.

Correct! Wrong!

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

True.

False.

Correct! Wrong!

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

Engine bleed air temperature is controlled by:

A pre-cooler that uses fan air.

Conditioned air from the mixing unit.

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

Correct! Wrong!

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

Overheat detection.

APU and Engine 1 leak detection.

Overpressure 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!

Bleed air normally comes from the _____ of the engine.

Intermediate stage.

Low pressure stage.

High pressure stage.

Correct! Wrong!

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

Assume the open position.

Assume the closed position.

Remain in its current position.

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!

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

False.

True.

Correct! Wrong!

During Normal operation, when would the HP valve open?

When IP pressure is insufficient for the demand.

At low thrust settings.

With pilot intervention on the overhead panel.

At TOGA power.

Correct! Wrong!

Temperature regulation is controlled by:

The two BMCs.

Two pack controllers and the BMCs (Bleed Monitoring Computers)

One zone controller and two pack controllers.

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!

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

175 deg.C.

90 deg.C.

150 deg.C.

200 deg.C.

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!

The lavatory/galley extract fan operates:

Only on the ground.

Only in flight.

Continuously when electrical power is available.

Correct! Wrong!

In normal operation which bleed air source has priority?

RAM Air.

APU.

Engine Bleed.

Ground Air.

Correct! Wrong!

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!

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.

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

True.

False.

Correct! Wrong!

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

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

HP valve closes.

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

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!

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!

Airbus A320 – Pneumatic

Airbus A320 – Pneumatic

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

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

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

If a Bleed Monitoring Computer (BMC) fails:

The overheat detection system uses a single loop for:

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.

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

Should both channels fail in a zone controller:

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

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

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

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

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

Engine bleed air temperature is controlled by:

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

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

Bleed air normally comes from the _____ of the engine.

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

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

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

During Normal operation, when would the HP valve open?

Temperature regulation is controlled by:

Air bleed from the engines is:

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

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

The lavatory/galley extract fan operates:

In normal operation which bleed air source has priority?

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

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

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

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

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

When selected ON, the APU bleed air will:

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