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

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

False.

True.

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!

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!

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

Push the High Pressure pb on the overhead panel.

Engine power has to be increased by the pilot.

The engine spools up automatically.

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!

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!

Air bleed from the engines is:

Only cooled in air conditioning part.

Not cooled prior to being used by the systems.

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

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.

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:

Overheat detection.

Engine 1 and APU leak detection.

Automatic cross-bleed valve control.

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 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!

The overheat detection system uses a single loop for:

The wings and fuselage.

The pylons and APU.

The wings and pylons.

Correct! Wrong!

Engine bleed air temperature is controlled by:

A pre-cooler that uses fan air.

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

Conditioned air from the mixing unit.

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!

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!

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 or low pressure.

The BMC detects an overheat.

Correct! Wrong!

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

APU overheat.

APU overheat or bleed leak.

APU bleed leak.

Correct! Wrong!

An ECAM caution will also appear.

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!

Bleed air normally comes from the _____ of the engine.

Intermediate stage.

High pressure stage.

Low pressure stage.

Correct! Wrong!

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

High.

Low.

Medium.

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.

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

The APU bleed valve is open.

When engine start is selected.

An engine bleed valve is open.

Correct! Wrong!

The lavatory/galley extract fan operates:

Only in flight.

Continuously when electrical power is available.

Only on the ground.

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!

During Normal operation, when would the HP valve open?

At low thrust settings.

With pilot intervention on the overhead panel.

When IP pressure is insufficient for the demand.

At TOGA power.

Correct! Wrong!

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

True.

False.

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!

In normal operation which bleed air source has priority?

RAM Air.

Engine Bleed.

APU.

Ground Air.

Correct! Wrong!

When selected ON, the APU bleed air will:

Have priority over engine bleed air.

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

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

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 in flight).

It closes automatically if the system detects an air leak.

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

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!

Airbus A320 – Pneumatic

Airbus A320 – Pneumatic

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

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.

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

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

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

Air bleed from the engines is:

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

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:

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

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

Temperature regulation is controlled by:

The overheat detection system uses a single loop for:

Engine bleed air temperature is controlled by:

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

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

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

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

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

Bleed air normally comes from the _____ of the engine.

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

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

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

The lavatory/galley extract fan operates:

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

During Normal operation, when would the HP valve open?

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

If a Bleed Monitoring Computer (BMC) fails:

In normal operation which bleed air source has priority?

When selected ON, the APU bleed air will:

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

Should both channels fail in a zone controller:

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