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

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.

Normal (above 90% RPM).

Above 98% but less than 100%.

Above 95 %.

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!

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!

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

True.

False.

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!

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!

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!

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!

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

True.

False.

Correct! Wrong!

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

When engine start is selected.

The APU bleed valve is open.

An engine bleed valve is open.

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.

True.

False.

Correct! Wrong!

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

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

The BMC detects an overheat or low pressure.

The BMC detects an overheat.

The BMC detects an overheat or low temperature.

Correct! Wrong!

When selected ON, the APU bleed air will:

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

Have priority over engine bleed air.

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

Correct! Wrong!

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

True.

False.

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

It closes automatically if the system detects an air leak.

Correct! Wrong!

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

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

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

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

Correct! Wrong!

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

150 deg.C.

200 deg.C.

90 deg.C.

175 deg.C.

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!

In normal operation which bleed air source has priority?

APU.

RAM Air.

Engine Bleed.

Ground Air.

Correct! Wrong!

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

Push the High Pressure pb on the overhead panel.

The engine spools up automatically.

Engine power has to be increased by the pilot.

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.

Bleed air normally comes from the _____ of the engine.

Low pressure stage.

High pressure stage.

Intermediate stage.

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!

The lavatory/galley extract fan operates:

Only in flight.

Only on the ground.

Continuously when electrical power is available.

Correct! Wrong!

During Normal operation, when would the HP valve open?

At TOGA power.

When IP pressure is insufficient for the demand.

With pilot intervention on the overhead panel.

At low thrust settings.

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!

Should both channels fail in a zone controller:

The pack is not affected.

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

Temperature optimization and the backup mode are lost.

Correct! Wrong!

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

False.

True.

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!

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

Overheat detection.

APU and Engine 1 leak detection.

Overpressure detection.

Correct! Wrong!

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

APU overheat or bleed leak.

APU overheat.

APU bleed leak.

Correct! Wrong!

An ECAM caution will also appear.

Engine bleed air temperature is controlled by:

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

A pre-cooler that uses fan air.

Conditioned air from the mixing unit.

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!

Airbus A320 – Pneumatic

Airbus A320 – Pneumatic

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.

If a Bleed Monitoring Computer (BMC) fails:

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

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

The overheat detection system uses a single loop for:

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

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

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

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

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

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

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

When selected ON, the APU bleed air will:

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

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

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

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

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

In normal operation which bleed air source has priority?

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

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

Bleed air normally comes from the _____ of the engine.

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

The lavatory/galley extract fan operates:

During Normal operation, when would the HP valve open?

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

Should both channels fail in a zone controller:

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

Air bleed from the engines is:

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

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

Engine bleed air temperature is controlled by:

Temperature regulation is controlled by:

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