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UPS 757/767 > Hydraulics > Flashcards

Hydraulics Flashcards

1
Q

Is it possible to deploy the ram air turbine (RAT) on the ground with no power on the aircraft?

  • yes, RAT will deploy on the ground if RAT switch is pushed regardless a battery switch position
  • yes, every time both engines are shut down, the RAT deploys on the ground
  • No
A

• yes, RAT will deploy on the ground if RAT switch is pushed regardless a battery switch position

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2
Q

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

  • normal brakes and flight controls
  • flight controls, alternate brakes, reserve brakes, tail skid, landing gear, nose wheel steering, hydraulic driven generator (HDG), and flaps and slats
  • Flight controls
A

• flight controls, alternate brakes, reserve brakes, tail skid, landing gear, nose wheel steering, hydraulic driven generator (HDG), and flaps and slats

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3
Q

How does pulling the fire engine switch affect the hydraulic system?

  • disconnects the engine hydraulic pump, requiring maintenance reset
  • Shuts off fluid to the engine pump and depressurizes the pump
  • depressurizes the associated hydraulic system
A

• Shuts off fluid to the engine pump and depressurizes the pump

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4
Q

(757) what condition causes the power transfer unit (PTU) to operate automatically?

  • left engine failure and/or left electric hydraulic pump pressure low
  • left engine failure only
  • left engine failure and/or left engine driven hydraulic pump pressure low
A

• left engine failure and/or left engine driven hydraulic pump pressure low

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5
Q

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

  • landing gear in flight controls
  • flight controls
  • normal breaks in flight controls
A

• flight controls

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6
Q

What does RF indicate on the status page adjacent to hydraulic quality?

  • reservoir doesn’t require a refill
  • reservoir overfilled in greater than 1.25
  • Reservoir requires refilling
A

• reservoir requires refilling

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7
Q

(767) Which system uses reserve hydraulic fluid?

  • nose wheel steering, landing gear, flaps and slats, and main cargo door
  • flight controls
  • reserve brakes and steering
A

• reserve brakes and steering

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8
Q

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

  • flight controls, normal and reserve breaks, and right thrust reverser
  • flight controls
  • flight controls, alternate brakes, left thrust reverser, main cargo door, flaps and slats, landing gear, and nose wheel steering
A

• flight controls

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9
Q

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

  • left engine pump pressure low
  • when the landing gear and/or flaps/slats are operating, or low system pressure or high demand on left hydraulic system
  • flap lever in one, five, 15, or 20 positions
A

• left engine pump pressure low

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10
Q

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

  • flight controls, alternate brakes, left thrust reverser, main cargo door, flaps and slats, landing gear, and nose wheel steering
  • flight controls only
  • light controls, normal and reserve breaks, and right thrust reverser
A

• flight controls, alternate brakes, left thrust reverser, main cargo door, flaps and slats, landing gear, and nose wheel steering

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11
Q

(757) What does the RSVR light indicate?

  • Low reservoir hydraulic quality and/or pressure
  • automatic right system isolation has occurred
  • reserve brakes and steering active
A

• Low reservoir hydraulic quality and/or pressure

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12
Q

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

  • fuel control switch in run, or right hydraulic system pump pressure low or on the ground with flaps 25 or 30 selected
  • right engine pump pressure low or flap lever in one, five, 15 or 20 to ensure pressure to normal breaks during takeoff
  • right hydraulic system pressure low, or in flight with flaps one, five, 15 or 20 selected
A

• right engine pump pressure low or flap lever in one, five, 15 or 20 to ensure pressure to normal breaks during takeoff

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13
Q

(767) What does a QTY light indicate?
What does a QTY light indicate?

  • Low reservoir quantity and/or pneumatic pressure
  • Low reservoir quantity
  • Low pump pressure
A

• Low reservoir quantity

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14
Q

What condition automatically deploys the ram air turbine (RAT)?

  • Both engines fail
  • loss of one engine
  • loss of center hydraulics
A

• both engines fail

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15
Q

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

  • all three
  • left hydraulic system
  • Center hydraulic system
A

• Center hydraulic system

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16
Q

What is the minimum airspeed required to maintain adequate ram air turbine (RAT) hydraulic pressure?

  • 130 knots
  • 250 knots
  • airspeed above 140 knots
A

• 130 knots

17
Q

(757) What does the OVHT light indicate?

  • hydraulic system is overheated
  • Engine driven pump pressure low
  • respective pump temperature is high
A

• respective pump temperature is high

18
Q

What does an engine or electric hydraulic pump PRESS light indicate?

  • excessive system pressure
  • push to activate PTU
  • Low pump pressure
A

• Low pump pressure

19
Q

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

  • reserve brakes and steering
  • Power transfer unit (PTU)
  • hydraulic driven generator (HDG)
A

• Power transfer unit (PTU

20
Q

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

  • ram air turbine (RAT)
  • reserve brakes
  • Power transfer unit(PTU)
A

• reserve brakes

21
Q

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

  • flight controls, normal brakes and pitch enhancement system (PES)
  • flight controls only
  • flight controls, landing gear, alternate and reserve brakes, tail skid, hydraulic driven generator (HDG) and nose wheel steering
A

• flight controls, normal brakes and pitch enhancement system (PES)

22
Q

What cockpit indication assures adequate pressure to the center system when the ram air turbine (RAT) is deployed?

  • RF on status page
  • PRESS LIGHT
  • PRESS Light not illuminated
A

• PRESS light

23
Q

(757) Which components are powered by the power transfer unit (PTU)?

  • landing gear, nose wheel steering, flaps and slats, and flight controls
  • landing gear, nose wheel steering, flaps and slats, and main cargo door
  • reserve brakes and steering
A

• landing gear, nose wheel steering, flaps and slats, and main cargo door

24
Q

(757) what system uses the center Reservoir reserve hydraulic fluid?

  • Power transfer(PTU)
  • reserve brakes
  • ram air turbine (RAT)
A

• ram air turbine (RAT)

25
Q

What is powered by the ram air turbine (RAT)

  • alternate brakes
  • flight controls
  • reserve brakes
A

• flight controls

26
Q

What does SYS PRESS light indicate?

  • high system pressure
  • Low system pressure
  • ADP operation
A

• Low system pressure

27
Q

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

  • flight controls, alternate brakes, left thrust reverser, main cargo door, flaps and slats, landing gear, and nose wheel steering
  • light controls, normal and reserve breaks, and right thrust reverser
  • flight controls
A

• light controls, normal and reserve breaks, and right thrust reverser

28
Q

(766) what is the power source for the Air Demand Pump (ADP)?

  • right AC Bus
  • left AC bus
  • bleed air from the center pneumatic duct
A

• bleed air from the center pneumatic duct

29
Q

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

  • with two engine driven generators operating in both centered electric pumps which is on, the number one electric pump is inhibited
  • with one engine driven generator operating in both center electric pump switches on the number two electric pump is inhibited
  • with one engine driven generator operating in both center electric pump switch is on the left engine driven pump is inhibited
A

• with one engine driven generator operating in both center electric pump switches on the number two electric pump is inhibited

30
Q

(767) when does the air demand pump (ADP) operate automatically?

  • Low center hydraulic system pressure, heavy load demands are selected or when hydraulic driven generator (HDG) is signaled to operate
  • left engine below 50% N2
  • loss of the right hydraulic system
A

• Low center hydraulic system pressure, heavy load demands are selected or when hydraulic driven generator (HDG) is signaled to operate

UPS 757/767 (16 decks)

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