Hydraulic Panel

Question 1

HYDRAULIC PANEL

Q:​ Can the​ aircraft be​ flown​ with a loss​ of​ all​ hydraulic systems?​ ​

Answer 1

Ref: (FOM VOL. III-DSC-27-10-10)​ ​

No –​ you must​ have​ at least​ one​

Question 2

HYDRAULIC PANEL

Q:​ What occurs​ when you​ press​ the​ RAT MAN​ ON​ pushbutton?​ ​

Answer 2

Ref: (FOM VOL. III-DSC-29-20) ​

The​ RAT extends

Question 3

HYDRAULIC PANEL

Q:​ Does the​ PTU transfer hydraulic fluid?​ ​

Answer 3

Ref: (FOM VOL. III-DSC-29-10-10)​ ​

No​

Question 4

HYDRAULIC PANEL

Q:​ How many​ hydraulic pumps​ are in the​ GREEN system?​ ​

Answer 4

Ref: (FOM VOL. III-DSC-29-10-20)​ ​

• 1​ Engine ​
• 1​ PTU

Question 5

HYDRAULIC PANEL

Q:​ How many​ hydraulic pumps​ are in the​ BLUE system?​ ​

Answer 5

Ref: (FOM VOL. III-DSC-29-10-20)​ ​

• 1​ Electric​ ​
• 1​ RAT

Question 6

HYDRAULIC PANEL

Q:​ How many​ hydraulic pumps​ are in the​ YELLOW system?​ ​

Answer 6

Ref: (FOM VOL. III-DSC-29-10-20)​ ​

• 1​ Engine ​
• 1​ Electric​ ​
• 1​ PTU ​
• 1 Hand​ pump

Question 7

HYDRAULIC PANEL

Q:​ When does​ the BLUE ELEC PUMP operate? ​

Answer 7

Ref: (FOM VOL. III-DSC-29-20) ​

• After the​ first engine​ is​ started​ ​
• In flight
• If​ the BLUE PUMP OVRD pb​ on the​ MAINTENANCE panel has been pressed with no engine​ ​running​

Question 8

HYDRAULIC PANEL

Q:​ What is​ normal​ system​ hydraulic pressure? ​

Answer 8

Ref: (FOM VOL. III-DSC-29-10-10)​ ​

3000​ PSI​

Question 9

HYDRAULIC PANEL

Q:​ Does the​ RAT​ automatically​ deploy​ with the​ loss​ of​ BLUE hydraulic pressure?​ ​

Answer 9

Ref: (FOM VOL. III-DSC-29-10-20)​ ​

No, it​ must be​ deployed​ manually by​ the​ RAT​ MAN​ ON​ pushbutton​

Question 10

HYDRAULIC PANEL

Q:​ If​ the​ ACCU PRESS​ indicator is​ low and​ an external​ walkaround​ is to be​ completed,​ what​ should you​ ​do?​ ​

Answer 10

Ref: (FOM VOL. II Section​ 3.05) ​

Obtain ground​ clearance​ then turn​ ON​ the YELLOW​ ELEC PUMP to pressurize​ the​ accumulator​

Question 11

HYDRAULIC PANEL

Q:​ What condition will​ cause​ the PTU​ to operate​ when​ the pushbutton​ is in AUTO?​ ​

Answer 11

Ref: (FOM VOL. III-DSC-29-20) ​

A difference​ of​ 500​ PSI between GREEN and​ YELLOW​ hydraulic systems​.

Question 12

HYDRAULIC PANEL

Q:​ When is the​ PTU inhibited?​ ​

Answer 12

Ref: (FOM VOL. III-DSC-32-10-30,​ FOM​ VOL.​ III-DSC-29-20) ​

• PTU pushbutton​ OFF​ ​
• First engine​ start ​
• Parking​ brake is SET​ and only one ENG​ MASTER​ switch is​ ON​ ​
• NWS​ in towing position and​ parking brake​ RELEASED​ ​
• Cargo door operation (PTU is also inhibited for 40​ seconds​ after the end of cargo door​ ​operation)

Question 13

HYDRAULIC PANEL

Q:​ If​ the​ ECAM actions​ lead​ you to​ turn OFF​ the​ PTU for a Reservoir Overheat, will​ the​ FAULT light go out?​ ​

Answer 13

Ref: (FOM VOL. III-DSC-29-20) ​

No, not until the​ overheat subsides​

Question 14

HYDRAULIC PANEL

Q:​ If​ the​ FAULT light in the​ PTU pushbutton is​ ON,​ are​ there​ any​ other indications​ on the​ HYD Panel?​ ​

Answer 14

Ref: (FOM VOL.​ III-DSC-29-20) ​

Yes​ –​ FAULT light illuminated in the​ respective​ ENG​ PUMP​ pushbutton​

Question 15

HYDRAULIC PANEL

Q:​ Can the​ YELLOW ELEC PUMP run​ the​ PTU?​ ​

Answer 15

Ref: (FOM VOL. III-DSC-29-10-20)​ ​

Yes

Question 16

HYDRAULIC PANEL

Q:​ Name several items​ that run from​ only the​ GREEN system.​ ​

Answer 16

Ref: (FOM VOL. III-DSC-29-10-30)​ ​

• Landing gear​ ​
• Normal brakes ​
• Slats and​ flaps ​
• Engine​ 1 reverser

Question 17

HYDRAULIC PANEL

Q:​ Name several items​ that run from​ only the​ YELLOW system.​ ​

Answer 17

Ref: (FOM VOL. III-DSC-29-10-30)​ ​

• Nosewheel steering​ ​
• Alternate​ brakes ​
• Parking brake​ ​
• Cargo​ doors​ ​
• Engine​ 2 reverser

Question 18

HYDRAULIC PANEL

Q:​ List several​ items​ that are​ powered by the​ BLUE system.​ ​

Answer 18

Ref: (FOM VOL. III-DSC-29-10-30)​ ​

• Slats​ ​
• Emergency​ generator

Question 19

HYDRAULIC PANEL

Q:​ What does​ an​ amber FAULT light in the​ PTU pushbutton indicate?

Answer 19

Ref: (FOM VOL. III-DSC-29-20) ​

• “LOL”
• L​ - Low quantity in the​ reservoir
• O​ - Overtemp in​ reservoir​ ​
• L​ - Low air pressure in the​ reservoir​ ​

Question 20

HYDRAULIC PANEL

Q:​ What does​ an​ amber FAULT light in the​ ENG PUMP pushbutton​ indicate (POLL)?​ ​

Answer 20

Ref: (FOM VOL. III-DSC-29-20) ​

• P​ - Pump pressure​ low​ ​
• O​ - Overtemp in​ reservoir​ ​
• L​ - Low air pressure in the​ reservoir​ ​
• L​ - Low quantity in the​ reservoir​

Question 21

HYDRAULIC PANEL

Q:​ What​ does a FAULT light​ in the BLUE or YELLOW ELEC PUMP pushbutton indicate​?​

Answer 21

Ref: (FOM VOL. III-DSC-29-20) ​

• “POLLO”
• P​ - Pump pressure​ low​ ​
• O​ - Overtemp in​ reservoir​ ​
• L​ - Low air pressure in the​ reservoir​ ​
• L​ - Low quantity in the​ reservoir​ ​
• O​ - Overheat of​ pump​

Question 22

HYDRAULIC PANEL

Q:​ Where​ are​ the HYD FIRE SHUTOFF​ VALVES​ located?​ ​

Answer 22

Ref: (FOM VOL. III-DSC-29-10-20)​ ​

Between​ the​ respective​ reservoir and​ ENG​ pump​

Question 23

HYDRAULIC PANEL

Q:​ What is​ the​ function of​ the​ hydraulic priority​ valves?​ ​

Answer 23

Ref: (FOM VOL. III-DSC-29-10-20)​ ​

Hydraulic power​ to the​ flaps,​ slats, landing​ gear,​ and​ emergency​ generator is cut off if pressure ​drops below a​ predetermined value​ (high demand items)​

Question 24

HYDRAULIC PANEL

Q:​ What is​ the​ purpose​ of the​ hand pump?​ ​

Answer 24

Ref: (FOM VOL.​ III-DSC-29-10-20)​ ​

To provide​ Yellow hydraulic​ pressure for cargo door operation​