HYD Panel ( 4 EVEN) Flashcards

1
Q

What are the three HYD systems called?

A
  • GREEN, BLUE and YELLOW Systems
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2
Q

How is each hydraulic system normally powered?

A
  • GREEN – engine driven
  • BLUE – electrically driven
  • YELLOW – engine or electrically driven
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3
Q

When does the BLUE pump normally operate?

A
  • After the first engine is started
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4
Q

If the BLUE system lost pressure, how would pressure be restored?

A
  • The RAT must be deployed. It does not deploy automatically upon BLUE system loss of pressure, so if needed, it must be manually deployed with the RAT MAN ON pushbutton.
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5
Q

What can be done to correct low ACUM PRESS indication?

A
  • On the ground, coordinate with ground personnel and turn on the YELLOW ELEC pump
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6
Q

With no HYD system power, how can the FWD CARGO door be opened?

A
  • By using a hand pump
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7
Q

What causes the PTU to operate in if in AUTO?

A
  • Differential pressure of 500 psi between GREEN and YELLOW systems
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8
Q

When is the PTU inhibited?

A
  • On the ground with ENG MASTER levers split and either the nose wheel steering disconnected or the parking brake ON
  • For 40 seconds after cargo door is operated
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9
Q

What are some users of the GREEN system?

A
  • Landing gear
  • Normal brakes
  • Slats and flaps
  • ENG 1 thrust reverser
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10
Q

What are some users of the BLUE system?

A
  • Emergency generator
  • Slats
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11
Q

What are some users of the YELLOW system?

A
  • Flaps
  • Nose wheel steering
  • Alternate brakes
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12
Q

What do the priority valves do in the HYD systems?

A
  • Removes hydraulic power from the heavy users and protects the flight controls.
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13
Q

What would cause a FAULT light in the ENG 1 pump?

A
  • Pump low pressure
  • Over temp in reservoir
  • Low air pressure in reservoir
  • Low quantity
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14
Q

If the FAULT light illuminates in the ENG 1 pump, what would identify the specific reason for the FAULT?

A
  • ECAM will display the reason
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