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Allegiant A320 Systems (2024) > Hydraulics > Flashcards

Hydraulics Flashcards

1
Q

Q1 | HYDRAULICS PANEL

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

A

No – you must have at least one

[ FCOM-DSC-27-10-10 ]

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2
Q

Q2 | HYDRAULICS PANEL

What occurs when you press the RAT MAN ON pushbutton?

A

The RAT extends providing pressure to the BLUE hydraulic system

[ FCOM-DSC-24-10-30-30 ]

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3
Q

Q3 | HYDRAULICS PANEL

Does the PTU transfer hydraulic fluid?

A

No

[ FCOM-DSC-29-10-10 ]

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4
Q

Q4 | HYDRAULICS PANEL

How many hydraulic pumps are in the GREEN system?

A
  • 1 Engine
  • 1 PTU

[ FCOM-DSC-29-10-20 ]

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5
Q

Q5 | HYDRAULICS PANEL

How many hydraulic pumps are in the BLUE system?

A
  • 1 Electric
  • 1 RAT

[ FCOM-DSC-29-10-20 ]

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6
Q

Q6 | HYDRAULICS PANEL

How many hydraulic pumps are in the YELLOW system?

A
  • 1 Engine
  • 1 Electric
  • 1PTU
  • 1 Hand pump

[ FCOM-DSC-29-10-20 ]

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7
Q

Q7 | HYDRAULICS PANEL

When does the BLUE ELEC PUMP operate?

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

[ FCOM-DSC-29-20 ]

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8
Q

Q8 | HYDRAULICS PANEL

What is normal system hydraulic pressure?

A

3000 ± 200 PSI

[ FCOM-DSC-29-10-10 ]

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9
Q

Q9 | HYDRAULICS PANEL

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

A
  • No
  • It must be deployed manually by the RAT MAN ON pushbutton

[ FCOM-DSC-29-10-20 ]

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10
Q

Q10 | HYDRAULICS PANEL

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

A

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

[ FCOM-PRO-NOR-SOP-04 ]

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11
Q

Q11 | HYDRAULICS PANEL

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

A

A difference of 500 PSI between GREEN and YELLOW hydraulic systems

[ FCOM-DSC-29-20 ]

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12
Q

Q12 | HYDRAULICS PANEL

Can the YELLOW ELEC PUMP run the PTU?

A

Yes

[ FCOM-DSC-29-10-20 ]

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13
Q

Q13 | HYDRAULICS PANEL

When is the PTU inhibited?

A
  • 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)

[ FCOM-DSC-29-10-20, FCOM-DSC-29-20 ]

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14
Q

Q14 | HYDRAULICS PANEL

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

A

No, not until the overheat subsides

[ FCOM-DSC-29-20 ]

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15
Q

Q15 | HYDRAULICS PANEL

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

[ FCOM-DSC-29-20 ]

A

Yes
FAULT light illuminated in the respective ENG PUMP pushbutton

[ FCOM-DSC-29-20 ]

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16
Q

Q16 | HYDRAULICS PANEL

Name several items that run from only the GREEN system.

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

[ FCOM-DSC-29-10-30 ]

17
Q

Q17 | HYDRAULICS PANEL

Name several items that run from only the YELLOW system.

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

[ FCOM-DSC-29-10-30 ]

18
Q

Q18 | HYDRAULICS PANEL

List several items that are powered by the BLUE system.

A
  • Slats
  • Emergency generator

[ FCOM-DSC-29-10-30 ]

19
Q

Q19 | HYDRAULICS PANEL

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

A
  • O - Overtemp in reservoir
  • L - Low air pressure in the reservoir
  • L - Low quantity in the reservoir

OLL

[ FCOM-DSC-29-20 ]

20
Q

Q20 | HYDRAULICS PANEL

What does an amber FAULT light in the ENG PUMP pushbutton indicate?

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

POLL

[ FCOM-DSC-29-20 ]

21
Q

Q21 | HYDRAULICS PANEL

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

A
  • 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

POLLO

[ FCOM-DSC-29-20 ]

22
Q

Q22 | HYDRAULICS PANEL

What is the function of the hydraulic priority valves?

A

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

[ FCOM-DSC-29-10-10 ]

23
Q

Q23 | HYDRAULICS PANEL

What is the purpose of the hand pump?

A

To provide Yellow hydraulic pressure for cargo door operation

[ FCOM-DSC-29-10-20 ]

Allegiant A320 Systems (2024) (18 decks)

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