Question Bank - Airbus A320

Hydraulic

XIII of XVIII

Q 01: Fluid can be transferred between hydraulic systems.

A: True

B: False

Q 02: Which hydraulic systems have engine driven pumps?

A: Green and blue.

B: Green and yellow.

C: Blue and yellow.

Q 03: The Load Alleviation Function (LAF) accumulators are pressurized by which hydraulic systems?

A: Green and blue.

B: Green and yellow.

C: Blue and yellow.

Q 04: The RAT pressurizes the Blue hydraulic system to approximately ______ psi.

A: 1500

B: 2500

C: 3000

D: 3500

Q 05: How many pumps has the yellow system to provide pressure (not counting the PTU)?

A: 1

B: 2

C: 3

D: 4

Q 06: The hand pump supplies yellow system pressure to the:

A: Normal brakes.

B: Alternate brakes

C: Passenger doors.

D: Cargo doors.

Q 07: It is possible to pressurize the green hydraulic system on the ground via the PTU when the parking brake is set.

A: True

B: False

Q 08: The Eng Pump Fault light extinguishes when the engine pump switch is selected to off except for:

A: Reservoir low level.

B: Pump low pressure.

C: An overheat.

*Note – The fault light monitors overheat and stays on until the overheat condition exists.

Q 09: With the airplane on the ground and the blue electric pump switch in AUTO; the blue pump will be energized when:

A: One engine is running.

B: The BLUE PUMP OVRD switch has been pressed.

C: First two statements are correct.

Q 10: The PTU Fault light illuminates when the:

A: PTU is inoperative.

B: Green or yellow reservoir has low air pressure.

C: PTU pump has overheated.

Q 11: The PUMP identification number on the ECAM HYD page becomes amber when:

A: System pressure is below 1450 psi.

B: N2 is below idle.

C: The reservoir level is low.

Q 12: The _____ hydraulic system provides power for gear extension/retraction.

A: Yellow.

B: Blue

C: Green

Q 13: As long as the landing gear lever is up a hydraulic safety valve closes to cut off the hydraulic supply to the gear when the airspeed is:

A: Greater than 260 KIAS.

B: Greater than 230 KIAS.

C: Less than 260 KIAS.

D: Less than 230 KIAS

Q 14: Autobraking is initiated by:

A: Strut compression.

B: Reverser action.

C: Ground spoiler extension command.

Q 15: The alternate brake system has the same capabilities as normal brakes except:

A: Anti-skid is inoperative.

B: Autobrakes are inoperative.

C: Both first statements are correct

*Note – There are two modes of Alternate braking with Anti-skid (Yellow hydraulic and BSCU are available) amd Without anti-skid when Both Green and Yellow hydraulics has low pressure. In both modes Auto brake is inoperative.

Q 16: When using the alternate brake system on accumulator pressure only; the accumulator supplies:

A: Partial brakes.

B: At least seven full brake applications.

C: Alternate brakes with antiskid.

Q 17: The maximum degrees of nosewheel steering available when using the handwheel is ______.

A: +/- 60

B: +/- 75

C: +/- 95

D: +/- 105

Q 18: The green DECEL light on the Autobrake switch illuminates when the actual airplane deceleration corresponds to ______ % of the selected rate.

A: 80

B: 95

C: 100

D; 110

Q 19: The brakes pressure indication on TRIPLE PRESSURE INDICATOR reads which system pressure?

A: Yellow

B: Blue

C: Green

Q 20: To extend the landing gear with the Gravity Extension Handcrank requires _______ turns of the handle.

A: 3 counter-clockwise

B: 2 counter-clockwise

C: 3 clockwise

Q 21: The aircraft’s three hydraulic systems are normally pressurized by:

A: Two engine driven pumps and one electric pump.

B: Two electric pumps and one PTU.

C: Two electric pumps and one engine driven pump.

D: Two electric pumps and two engine driven pumps.

Q 22: When will the yellow system electric pump operate? (AC power is available).

A: During the second engine start.

B: When the first engine MASTER switch is moved to the ON position.

C: If any N2 RPM is less than 45%.

D: When the yellow electric system ELEC PUMP push button is selected to ON or the ground crew activates a cargo door switch.

Q 23: What are the major equipment losses with loss of Green system?

A: Speed Brakes.

B: Nosewheel steering, Autobrakes.

C: Alternate Brakes.

D: The upper and lower rudders.

*Note – Autobrakes will be lost however NWS and Anti Skid is available through yeallow hydraulic system

Q 24: The hydraulic PTU will activate if:

A: A significant pressure loss occurs in any of the three hydraulic systems.

B: A significant pressure loss occurs in the green or yellow hydraulic system.

C: Both are correct.

*Note – Pressure difference > 500PSI between Green and Yellow.

Q 25: After extending the RAT, is it possible to check its position and status?

A: Check to see if the blue system ELEC PUMP FAULT light is not illuminated.

B: Yes, select the ECAM ELEC page.

C: Yes, select the ECAM HYD page.

D: No. It is not possible.

Q 26: The RAT is capable of powering a pump which will pressurize:

A: Only the blue system.

B: All systems.

C: The blue and yellow system.

D: The blue and green system.

Q 27: How is the yellow hydraulic system pressurized?

A: An engine driven pump, an electric pump, the PTU using the green system and, for the cargo doors only, a hand pump.

B: An engine driven pump, electric pump, the PTU using the blue system and, for the cargo doors only, a hand pump.

C: An engine driven pump, an electric pump, and the PTU using the green system.

Q 28: When will normal operation of the BLUE system hydraulic pump begin?

A: During the first engine start.

B: When the first engine MASTER switch is moved to the ON position.

C: Only when the RAT is deployed.

D: After both engines are started.

Q 29: The PTU comes into action automatically when the differential pressure between the GREEN and the YELLOW systems is greater than ______ psi.

A: 300.

B: 500.

C: 650.

D: 700.

Q 30: When will the yellow system electric pump operate? (AC power is available)'

A: During the second engine start.

B: When the yellow electric system ELEC PUMP push button is selected to ON or the ground crew activates a cargo door switch.

C: If any N2 RPM is less than 45%.

D: When the first engine MASTER switch is moved to the ON position.

Q 31: What is the normal pressure in the hydraulic system?

A: 500 psi.

B: 1,000 psi.

C: 3,000 psi.

D: 2,000 psi

Q 32: You are at the gate. You have started engine #2. Before starting engine #1, you notice that the PTU test has not been activated. Is it normal.

A: No. You have to call the mechanics.

B: The PTU has been shutoff

C: The PTU will not work until the second engine has been started.

Q 33: You get a G RSVR OVHT message. Why does the ECAM procedure ask you to switch the PTU off first?

A: To prevent the hot hydraulic fluid from being transferred to the YELLOW system.

B: To depressurize the YELLOW and GREEN systems.

C: To prevent the BLUE system from pressurizing the GREEN system.

D: To prevent the PTU from pressurizing the GREEN system

Q 34: For hydraulic system malfunctions, when will the RAT deploy?

A: Automatically with the failure of both the green and blue hydraulic systems.

B: Automatically with the failure of both the green and yellow hydraulic systems.

C: Only when the guarded RAT MAN ON push button is selected by the crew.

D: When airspeed drops below 100 knots with the gear up.

*Note – The RAT will also drop if AC BUS 1+2 lose power,

Q 35: What does the RAT MAN ON switch do?

A: Extends RAT, pressurizes BLUE system, starts Emergency Generator.

B: Extends RAT, must push RAT MAN ON again to pressurize BLUE system.

C: Extends RAT, pressurizes GREEN system, starts Emergency Generator.

D: Extends RAT, pressurizes BLUE system, does not start Emergency Generator.

*Note – The RAT MAN ON does start the generator however does not connect to the electrical network. That option is not included here therefore D is the best option.

Q 36: Describe the PTU status with a green system reservoir overheat, low pressure or low fluid level.

A: The PTU will be inhibited

B: The crew must select the PTU ON.

C: The PTU fault light will remain illuminated as long as the problem exists. The PTU should be selected OFF.

C: The crew must select the PTU OFF then ON

Q 37: During engine start up, when is the BLUE hydraulic system pressurized?

A: As soon as the PTU is turned on.

B: As soon as the BLUE electric pump is manually turned on.

C: Automatically after first engine start.

D: As soon as the engine master switch is set to IGN/START

Q 38: If you lost the GREEN system, what equipment is lost?

A: Reverser 1 and gear retraction.

B: Reverser 1, gear retraction and nose wheel steering.

C: Reverser 2, gear retraction, cargo doors and nose wheel steering.

D: Reverser 2 and gear retraction.

*Note – NWS is not lost when green hydraulic fails. The Yellow system provides pressure for NWS. Auto brakes are lost.

The following system would be rendered INOP

                Spoilers 1+5

                CAT 3 Dual

                Auto Brakes

                Normal Brakes

                Landing Gear Retraction

                Reverser 1

                Yaw Damper 1

Q 39: Crew members can use a hand pump to pressurize the YELLOW system in order to operate the cargo doors when no electrical power is available.

A: True.

B: False.

 Q 40: If you lost the YELLOW system, what equipment is lost?

A: Reverser 2

B: Parking brake accumulator recharging

C: Cargo door.

D: All of the above.

*Note – Yellow hydraulic failure the following systems are INOP:

                Spoilers 2+4

                CAT 3 Dual

                NWS

                Revereser 2

                Cargo Door

                Yaw Damper 2

 Q 41: On the hydraulic quantity indicator what does the amber level indicate?

A: The warning level.

B: The reservoir contents

C: The normal filling level

D: The temperature of the hydraulic fluid.

 Q 42: What does a PTU FAULT light indicate?

A: GREEN or YELLOW reservoir overheat.

B: GREEN or YELLOW reservoir low air pressure.

C: GREEN or YELLOW reservoir low level..

D: All of the above.

 Q 43: If you lost the BLUE system, what equipment is lost?

A: The Emergency generator.

B: Cargo door

C: Nose wheel steering.

D: All of the above.

*Note – A loss of Blue Hydraulic system will render the following systems INOP

                Spoiler 3

                CAT 3 Dual

Emergency generator

                Blue electric pump

 Q 44: All hydraulic systems have a fire shutoff valve.

A: True.

B: False.

Note - Each of the GREEN and YELLOW systems has a fire shutoff valve in its upstream of its engine driven pump.

 Q 45: What is the signification of an amber RAT indicator (ECAM HYD page)?

A: The RAT is incorrectly stowed.

B: The RAT is not stowed.

C: Pressure for stowing the RAT has been applied, or the RAT pump is not available.

*dunno if that is even possible

 Q 46: How can the pilot switch off the Fire Shut Off Valves?

A: By de-pressing the Hydraulic Shut Off Switches.

B: By selecting the Hydraulic Valve Switch to the “Closed” position

C: By de-pressing the Engine Fire Switches