UPS 757/767 > Hydraulics > Flashcards

Hydraulics Flashcards

(30 cards)

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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
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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
Study These Flashcards
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
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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)
Study These Flashcards
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)
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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
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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
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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
Study These Flashcards
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)
Study These Flashcards
A

• ram air turbine (RAT)

25
What is powered by the ram air turbine (RAT) * alternate brakes * flight controls * reserve brakes
• flight controls
26
What does SYS PRESS light indicate? * high system pressure * Low system pressure * ADP operation
• Low system pressure
27
(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
• light controls, normal and reserve breaks, and right thrust reverser
28
(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
• bleed air from the center pneumatic duct
29
(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
• with one engine driven generator operating in both center electric pump switches on the number two electric pump is inhibited
30
(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
• Low center hydraulic system pressure, heavy load demands are selected or when hydraulic driven generator (HDG) is signaled to operate
UPS 757/767
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