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FCOM/FCTM/MEL-CDL/MSS A320 > ATA 29 - Hydraulic > Flashcards

ATA 29 - Hydraulic Flashcards

1
Q

Description of the hydraulic system

A

Cf diagram

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2
Q

Normal hydraulic pressure ?

A

3000 psi +/-200psi

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3
Q

Hydraulic pressure when RAT out on blue circuit ?

A

2500 psi

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4
Q

HYD ENG pump OFF: no pressure delivered but pump still running. True or false ?

A

True

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5
Q

Capacity blue hydraulic reservoir ?

A

6,5 L

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6
Q

Capacity green hydraulic reservoir ?

A

14,5L

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7
Q

Capacity yellow hydraulic reservoir ?

A

12,5L

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8
Q

Systems powered by green hydraulic ?

A

Landing gear
Slats / flaps
Rev 1
Normal brake /autobrake
FCTL

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9
Q

Systems powered by blue hydraulic ?

A

Emer gen
Slats
FCTL

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10
Q

Systems powered by yellow hydraulic ?

A

Flaps
Rev 2
Alter/parking brake
Cargo door
FCTL

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11
Q

Causes of FAULT hydraulic engine pump ?

A

Low hydraulic quantity
Low hydraulic pressure (inhibited on ground, engine off)
Low air pressure
Overheat reservoir

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12
Q

Yellow electrical pump provides pressure to which systems ?

A

Cargo door
Rev 2
Alt/prk brake

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13
Q

When blue electrical pump activates ?

A

On ground, 1or 2 engines running
Inflight

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14
Q

PTU AUTO: delta pressure to activate ?

A

500psi

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15
Q

PTU is inhibited when 1 engine running and bypass pin or parkbrake. True or False ?

A

True

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16
Q

RAT deploys automatically if hydraulic failure . True or False ?

A

False. You need RAT MAN ON to provide hydraulic (but no elec)

17
Q

Hydraulic pressure figure amber on ECAM page ?

A

1450 psi

18
Q

Where comes from air to pressurize hydraulic reservoir ?

A

ENG1 HP
(XBleed if not available )
Cf diagram

19
Q

When the PRIORITY VALVES operate ?

A

Low hydraulic pressure. Cut off big users.

20
Q

During first ENGINE START the PTU is active or inhibited ?

A

Inhibited

21
Q

The YELLOW SYSTEM includes operation of left or right elevator ?

A

Right elevator

22
Q

On ground when is the BLUE SYSTEM pressurized ?

A

One engine running

23
Q

On newer aircraft, with Yellow System lost, is NSW lost ?

A

Yes. On old aircraft NWS is on green circuit

24
Q

The GREEN SYSTEM operates which ailerons ?

A

Both.
BG —————-GB

25
Q

Which spoilers are actuated by which hydraulic circuit ?

A

1___2___3___4___5
G. Y. B. Y. G

26
Q

Which ailerons is operated by Blue circuit ?

A

Both
BG ____GB

27
Q

Which elevator is operated by green circuit ?

A

Left elevator

28
Q

YELLOW ELEC PUMP OFF. Ground crew select cargo door lever manually on OPEN or CLOSE. Is yellow circuit pressurized ?

A

Yes. It comes on automatically when a crewman sets the lever of the cargo door manual selector valve to OPEN or CLOSE. PTU and flight controls are inhibited as usual.

29
Q

Which systems are cut off by the hydraulic priority valve ?

A

Green: Landing gear and slats/flaps
Blue: Emer gen and slats
Yellow: flaps

FCOM/FCTM/MEL-CDL/MSS A320 (27 decks)

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