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757/767 MQB > Hydraulics > Flashcards

Hydraulics Flashcards

1
Q

What does an Engine or Electric Hydraulic Pump PRESS light indicate?

A

Low pump pressure

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2
Q

What is powered by the Ram Air Turbine (RAT)?

A

Flight controls

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3
Q

What condition automatically deploys the Ram Air Turbine (RAT)?

A

Both engines fail

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4
Q

What is the minimum airspeed required to maintain adequate Ram Air Turbine (RAT)
hydraulic pressure?

A

130 knots

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5
Q

What cockpit indication assures adequate pressure to the center system when the
Ram Air Turbine (RAT) is deployed?

A

PRESS light

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6
Q

What does RF indicate on the Status page adjacent to hydraulic quantity?

A

Reservoir requires refilling

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7
Q

What does the SYS PRESS light indicate?

A

Low system pressure

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8
Q

Is it possible to deploy the Ram Air Turbine (RAT) on the ground with no power on
the aircraft?

A

Yes, RAT will deploy on the ground if RAT switch is

pushed regardless of Battery switch position

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9
Q

How does pulling the Engine Fire switch affect the hydraulic system?

A

Shuts off fluid to the engine pump and depressurizes the

pump

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10
Q

(757) What does the RSVR light indicate?

A

Low reservoir hydraulic quantity and/or pressure

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11
Q

(757) What does the OVHT light indicate?

A

Respective pump temperature is high

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12
Q

(757) What are the electrical inhibits associated with the hydraulic system?

A

With one engine‐driven generator operating and both
Center Electric Pump switches ON, the number two
electric pump is inhibited

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13
Q

(757) Which components are powered by the left hydraulic system?

A

Flight controls, alternate brakes, left thrust reverser,
main cargo door, flaps and slats, landing gear, and
nosewheel steering

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14
Q

(757) Which components are powered by the center hydraulic system?

A

Flight Controls

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15
Q

(757) Which components are powered by the right hydraulic system?

A

Flight controls, normal and reserve brakes, and right

thrust reverser

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16
Q

(757) What system uses the left reservoir reserve hydraulic fluid?

A

Power Transfer Unit (PTU)

17
Q

(757) What condition(s) cause the Power Transfer Unit (PTU) to operate
automatically?

A

Left engine failure and/or left engine‐driven hydraulic

pump pressure low

18
Q

(757) Which components are powered by the Power Transfer Unit (PTU)?

A

Landing gear, nosewheel steering, flaps and slats, and

main cargo door

19
Q

(757) What system uses the center reservoir reserve hydraulic fluid?

A

Ram Air Turbine (RAT)

20
Q

(757) What system uses the right reservoir reserve hydraulic fluid?

A

Reserve brakes

21
Q

(767) What does a QTY light indicate?

A

Low reservoir quantity

22
Q

(767) Which components are powered by the left hydraulic system?

A

Flight controls

23
Q

(767) What reservoir maintains reserve hydraulic fluid for use by reserve brakes and
steering?

A

Center hydraulic system

24
Q

(767) Which system(s) use reserve hydraulic fluid?

A

Reserve brakes and steering

25
Q

(767) Which components does the center hydraulic system power?

A

Flight controls, alternate brakes, reserve brakes, tailskid,
landing gear, nosewheel steering, Hydraulic Driven
Generator (HDG), and flaps and slats

26
Q

(767) Which components are powered by the right hydraulic system?

A 
Flight controls and normal brakes and Pitch
Enhancement System (PES)
27
Q

(767) When does the left electric demand pump operate in AUTO?

A

Left engine pump pressure low

28
Q

(767) When does the right electric demand pump operate in AUTO?

A

Right engine pump pressure low or flap lever in 1, 5, 15

or 20 to ensure pressure to normal brakes during takeoff

29
Q

(767) When does the Air Demand Pump (ADP) operate automatically?

A

Low center hydraulic system pressure, heavy load items
are selected or when the Hydraulic Driven Generator
(HDG) is signaled to operate

30
Q

(767) What is the power source for the Air Demand Pump (ADP)?

A

Bleed air from the center pneumatic duct

757/767 MQB (21 decks)

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