Airbus A330 – Hydraulics - SmartCockpit - Airline training guides, Aviation, Operations, Safety

An accumulator in each system helps maintain constant pressure by covering transient demands during:

Abnormal operations.

Normal operations.

Any engine failure.

Correct! Wrong!

With a single hydraulic system failure the flight control law is:

Alternate.

Direct.

Normal.

Correct! Wrong!

Leak measurement valves pb on the Maintenance panel:

Are for maintenance purpose and ground operation only.

May be used by the crew to isolate flight controls during flight.

May be used to isolate heavy users.

Correct! Wrong!

Leak measurement valves are positioned upstream of the primary flight controls. They are used for the leak measurement of each system and may only be closed on ground, by using the LEAK MEASUREMENT VALVES pb on the maintenance panel.

The GREEN ELEC pump starts automatically:

After engine 1 failure

After engine 1 or 2 failure .

After engine 1 or 2 failure and Landing Gear Selector UP.

Correct! Wrong!

What indicates the amber zone on the HYD page?

The maximum reservoir filling level.

The temperature of the hydraulic fluid.

The reservoir quantity warning level.

Correct! Wrong!

In flight and during approach the FLAP handle is at 2. If an engine 2 failure occurs:

The YELLOW ELEC pump must be manually operated.

The YELLOW system is lost.

The HSMU will automatically operate the YELLOW ELEC pump.

Correct! Wrong!

After Takeoff, one engine fails prior to the Landing Gear retraction. When the Gear handle is selected 'UP':

Only the GREEN engine driven pumps are used to retract the gear.

The GREEN ELEC pump comes on automatically to assist gear retraction.

RAT will extend to assist gear retraction.

Correct! Wrong!

The hydraulic system monitoring unit (HSMU) processes:

Fluid transfer between the three hydraulic systems.

Engine 1 and 2 hydraulic fire shut off valves closure.

Control of electric pumps, Ram Air Turbine (RAT) extension.

Correct! Wrong!

A pump, driven by Engine 2 pressurizes the yellow system. Flight crew can also use a hand pump to pressurize the yellow system, in order to operate the cargo doors when no electrical power is available.

True.

False.

Correct! Wrong!

When the RAT pressurizes the green system, the aileron, elevator, and spoiler servo control operating speeds are reduced.

False.

True.

Correct! Wrong!

What is the difference between the BLUE ELEC pump and the GREEN or YELLOW ELEC pump?

The BLUE ELEC pump has a higher pressure.

The BLUE ELEC pump has a higher flow.

The BLUE ELEC pump has no automatic operation.

Correct! Wrong!

The RAT deploys automatically in the event of an engine failure or a low level in the green and yellow or green and blue reservoirs.

False.

True.

Correct! Wrong!

The RAT deploys automatically in the event of both engine failure or a low level in the green and yellow or green and blue reservoirs.

With the GREEN hydraulic system lost, the antiskid system is:

Operative via the blue hydraulic system.

Limited to 2000 psi brake pressure.

Lost.

Correct! Wrong!

The Ram Air Turbine (RAT) deployment is automatically controlled by the HSMU (Hydraulic System Monitoring Unit) when:

Low level in GREEN and YELLOW hydraulic reservoirs is detected.

Low level in GREEN and BLUE hydraulic reservoirs is detected.

Both statements are correct.

Correct! Wrong!

The Airbus A330 hydraulic system has:

Three hydraulic systems sharing the same pressure source.

Three hydraulic systems sharing the same hydraulic fluid.

Three fully independent systems working simultaneously.

Correct! Wrong!

During landing gear retraction, the engine 1 fails and the GREEN ELEC pump is automatically activated. How will it stop?

The GREEN ELEC pump spring loaded switch must be pressed.

The GREEN ELEC pump will stop automatically after 25 seconds.

The ENG 1 pump pb must be selected Off to stop both pumps.

Correct! Wrong!

The hydraulic reservoirs are pressurized:

From the packs 1 and 2.

From the pneumatic system.

From engine one or the crossbleed duct.

Correct! Wrong!

If the GREEN hydraulic system is lost:

The NWS (Nose Wheel Steering) is lost.

The NWS remains operative.

The NWS operates in alternate.

Correct! Wrong!

The BLUE hydraulic system includes operation of:

Outboard ailerons.

The slats and flaps.

The slats.

Correct! Wrong!

What is the correct statement about the RAT?

The RAT can be manually deployed by pressing the RAT MAN ON pb.

The RAT is able to pressurize the GREEN or the YELLOW systems.

The RAT will be automatically deployed in the event of low pressure in the GREEN system.

Correct! Wrong!

There is no possibility to transfer hydraulic fluid from one system to another.

False.

True.

Correct! Wrong!

The corresponding hydraulic systems can be pressurized by:

Two engine driven pumps for the YELLOW system.

Two engine driven pumps for the BLUE system.

Two engine driven pumps, an electric pump and a Ram Air Turbine (RAT) for the GREEN system.

Correct! Wrong!

There is a BLUE LO AIR PRESS alarm and there is a 'FAULT' indication on BLUE ENG 1 pump pb. Which one of the following statements is true?

The BLUE ENG pump may be restored for approach.

The BLUE ELEC pump must be set to on to recover the system.

The BLUE system cannot be restored for approach.

Correct! Wrong!

In the event of hydraulic green low pressure, heavy load users are isolated to give priority to:

Flight controls and normal braking.

Landing gear and nose wheel steering.

Ram Air Turbine (RAT).

Correct! Wrong!

In the event of low hydraulic pressure, a priority valve cuts off hydraulic power to heavy load users (emergency generator, nosewheel steering, landing gear) in order to keep the pressure for normal braking and flight controls.

In case of GREEN reservoir LO LEVEL the HSMU (Hydraulic System Monitoring Unit) will:

Close automatically the engine 1 and 2 fire shut off valves.

Extend the RAT automatically.

Start the GREEN ELEC pump automatically.

Correct! Wrong!

Airbus A330 – Hydraulics