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A320 S-LOD Rev 13 (Sept 30, 2020) Rev 13 > CH09 A320 Hydraulics > Flashcards

CH09 A320 Hydraulics Flashcards

1
Q

HYD_001

There are ___ separate and independent hydraulic systems. Designated as:

A

HYD_001

There are ___ separate and independent hydraulic systems. Designated as:

  • Green
  • Blue
  • Yellow
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2
Q

HYD_002

What are the power sources of the GREEN hydraulic system?

Green:

▪ Engine-driven pump powered by ______ __ (______).

▪ ______ ______ ______ (______) (alternate).

A

HYD_002

What are the power sources of the GREEN hydraulic system?

Green:

▪ Engine-driven pump powered by engine 1 (primary).

▪ Power Transfer Unit (PTU) (alternate).

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3
Q

HYD_002

What are the power sources of the BLUE hydraulic system?

▪ _______ _______ _______ (primary).

▪ _______ ___ _______ ( ___) (alternate).

A

HYD_002

What are the power sources of the BLUE hydraulic system?

Blue:

▪ Electrically powered pump (primary).

▪ Ram Air Turbine (RAT) (alternate).

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4
Q

HYD_002

What are the power sources of the YELLOW hydraulic system?

▪ Engine-driven pump powered by ______ ___ (primary).

▪ ______ ______ ____ ( ____) (alternate).

▪ ______ powered pump (alternate).

▪ ______ pump – capable of only providing pressure for ______ ______ operation ( ____ ______ on HYD page)

A

HYD_002

What are the power sources of the YELLOW hydraulic system?

Yellow:

▪ Engine-driven pump powered by engine 2 (primary).

▪ Power Transfer Unit (PTU) (alternate).

▪ Electrically powered pump (alternate).

▪ Hand pump – capable of only providing pressure for cargo door operation (Not displayed on HYD page)

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5
Q

HYD_003

Explain the displays of the hydraulic system’s reservoir quantity indicator on the ECAM HYD page:

▪ Green pointer indicates _____ _____.
▪ Green rectangle range represents a ___ _____.
▪ Amber rectangle range represents ___ _____ and will cause an ECAM _____ __ ___ caution message.

NOTE: Quantity pointer must be within the _____ ____ during aircraft preflight with respective system ________

A

HYD_003

Explain the displays of the hydraulic system’s reservoir quantity indicator on the ECAM HYD page:

▪ Green pointer indicates fluid quantity.
▪ Green rectangle range represents a full quantity.
▪ Amber rectangle range represents low quantity and will cause an ECAM RSVR LO LVL caution message.

NOTE: Quantity pointer must be within the green rectangle during aircraft preflight with respective system depressurized

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6
Q

HYD_004

Explain the operation of the BLUE ELEC PUMP when its pb is selected AUTO (lights out). On the ground? In flight?

On the ground - pump is _________ _______ and runs _________ with _________ _________ _________.

In-flight - pump operates _________ regardless of engine operation provided __ _________ is available.

A

HYD_004

Explain the operation of the BLUE ELEC PUMP when its pb is selected AUTO (lights out). On the ground? In flight?

BLUE ELEC PUMP – AUTO (lights out):

On the ground - pump is automatically activated and runs continuously with first engine start.

In-flight - pump operates continuously regardless of engine operation provided AC power is available.

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7
Q

HYD_005

How are Fire Shutoff valve indications displayed on the ECAM HYD page?

Fire Shutoff valve indications displayed:

  • ______ and ______ system Fire Shut off valves are depicted ______ the green engine pump depictions.

How are the valves controlled?

  • Controlled by the respective ___ __ (__) ______ pb.
A

HYD_005

How are Fire Shutoff valve indications displayed on the ECAM HYD page?

Fire Shutoff valve indications displayed:

  • Green and Yellow system Fire Shut off valves are depicted below the green engine pump depictions.

Controlled by the respective ENG 1(2) FIRE pb.

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8
Q

HYD_006

Which pumps are depicted on the ECAM HYD page?

o ______ Sys ENG 1 PUMP
o ______ Sys ______ PUMP
o ______ Sys ENG 2 PUMP
o ______ Sys ______ Pump
o __ __ __ (______ ______ ______)

o ___ ___ ___ (__ __ __)

A

HYD_006

Which pumps are depicted on the ECAM HYD page?

o Green Sys ENG 1 PUMP
o Blue Sys ELEC PUMP
o Yellow Sys ENG 2 PUMP
o Yellow Sys ELEC Pump
o PTU (Power Transfer Unit)

o Ram Air Turbine (RAT)

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9
Q

HYD_008

What are the indications when the Yellow Electric Pump is selected ON?

▪ ON (_____) appears on the _____ _____ _____ pb.

▪ The triangle on the ECAM HYD page next to the _____ _____ indication turns _____ _____.

A

HYD_008

What are the indications when the Yellow Electric Pump is selected ON?

▪ ON (white) appears on the YELLOW ELEC PUMP pb.

▪ The triangle on the ECAM HYD page next to the white ELEC indication turns solid green.

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10
Q

HYD_009

What is the function of the Power Transfer Unit (PTU)?

The PTU is a ________ hydraulic motor/pump which provides an ________ power source to either the ________ or ________ hydraulic systems.

How does it work?

NOTE: The PTU transfers ________ and _____ fluid between the ________ and ________ systems.

A

HYD_009

What is the function of the Power Transfer Unit (PTU)?

The PTU is a bidirectional hydraulic motor/pump which provides an alternate power source to either the Green or Yellow hydraulic systems.

NOTE: The PTU transfers power and not fluid between the Green and Yellow systems.

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11
Q

HYD_011

Describe the PTU indications on the ECAM HYD page.

o Green arrows pointing away from the ____ PTU label indicate that the PTU is _____ and ___ _____.

A

HYD_011

Describe the PTU indications on the ECAM HYD page.

o Green arrows pointing away from the white PTU label indicate that the PTU is armed and not operating.

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12
Q

HYD_011

Describe the PTU indications on the ECAM HYD page:

o Amber arrows indicate the PTU pb has been either _____ ___ or _______.

A

HYD_011

Describe the PTU indications on the ECAM HYD page:

o Amber arrows indicate the PTU pb has been either selected OFF or inhibited.

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13
Q

HYD_011

Describe the PTU indications on the ECAM HYD page:

o Solid green arrows pointing to the left indicate that the PTU is _________ _________ to the _______ hydraulic system.

o Solid green arrows pointing to the right indicate that the PTU is _________ _________ to the _________ hydraulic system.

A

HYD_011

Describe the PTU indications on the ECAM HYD page:

o Solid green arrows pointing to the left indicate that the PTU is supplying pressure to the Green hydraulic system.

o Solid green arrows pointing to the right indicate that the PTU is supplying pressure to the Yellow hydraulic system.

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14
Q

HYD_012

What is the indication on the E/WD memo section when the PTU is operating?

A

HYD_012

What is the indication on the E/WD memo section when the PTU is operating?

▪ HYD PTU appears

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15
Q

HYD_013

What conditions will automatically inhibit PTU operation?

  • When ___ ______ switches are in ______ positions

(one ___ the other ___), and either:

▪ ______ ______ is on. or

▪ Nose wheel steering is ______ by the ______ ______ ______on the nose gear.

  • When the ______ ______ pump is activated through either ______ ______ operation.
A

HYD_013

What conditions will automatically inhibit PTU operation?

  • When ENG MASTER switches are in opposite positions (one ON the other OFF), and either:

▪ Parking brake is on. or

▪ Nose wheel steering is disconnected by the towing lever on the nose gear.

  • When the Yellow Electric pump is activated through either cargo door’s operation.
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16
Q

HYD_014

What is the meaning of the FAULT light in the PTU pb?

Illuminates as the result of the following within either the _______ or _______ hydraulic system _______:

▪ Hydraulic fluid _______

▪ Low ___ _______

▪ Low hydraulic _______ _______

NOTE: The FAULT light does not represent the status or condition of the ___.

A

HYD_014

What is the meaning of the FAULT light in the PTU pb?

Illuminates as the result of the following within either the Green or Yellow hydraulic system reservoirs:

▪ Hydraulic fluid overheat

▪ Low air pressure

▪ Low hydraulic fluid level

NOTE: The FAULT light does not represent the status or condition of the PTU.

17
Q

HYD_015

What is the function of the RAT MAN ON pb?

  • Used to ________ deploy the Ram Air Turbine (RAT), which provides ________ power to pressurize the ______ hydraulic system.
  • The ________ generator is ____ energized with use of this pb.

NOTE: The RAT will ____ automatically deploy with a failure of the ________ ________ pump.

A

HYD_015

What is the function of the RAT MAN ON pb?

  • Used to manually deploy the Ram Air Turbine (RAT), which provides alternate power to pressurize the Blue hydraulic system.
  • The emergency generator is not energized with use of this pb.

NOTE: The RAT will not automatically deploy with a failure of the Blue Electric pump.

18
Q

HYD_016

What are the indications when the RAT is deployed?

  • ___ ____ (_____) appears on the E/WD memo section.
  • The white hollow_____ next to the _____ RAT indication on the ECAM HYD page turns _____ _____, and a line connects it to the rest of the_____ system indications .
A

HYD_016

What are the indications when the RAT is deployed?

  • RAT OUT (green) appears on the E/WD memo section.
  • The white hollow triangle next to the white RAT indication on the ECAM HYD page turns solid green, and a line connects it to the rest of the Blue system indications .
19
Q

EXTRA LMS HYD 08

In the AUTO mode, the PTU will:

A Automatically engage when the differential pressure between the Green and Yellow hydraulic systems reaches 500psi.

B Not operate if the A/SKID and N/W STRG switch is in the OFF position.

C Automatically pressurize the Blue hydraulic system if the Blue electric hydraulic pump fails.

D Perform a self-test when electrical power is applied to the aircraft.

A

EXTRA LMS HYD 08

In the AUTO mode, the PTU will:

A Automatically engage when the differential pressure between the Green and Yellow hydraulic systems reaches 500psi.

B Not operate if the A/SKID and N/W STRG switch is in the OFF position.

C Automatically pressurize the Blue hydraulic system if the Blue electric hydraulic pump fails.

D Perform a self-test when electrical power is applied to the aircraft.

That is correct. A

A320 S-LOD Rev 13 (Sept 30, 2020) Rev 13 (17 decks)

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