Hydraulics Flashcards

1
Q

What does the hydraulic system (SYS FAULT) light indicate? (2 Lows and a high)

A
  • low hydraulic system pressure
  • low hydraulic reservoir quantity
  • high hydraulic fluid temperature
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2
Q

What does a Hydraulic demand pump low pressure light indicate?

A
  • demand pump selector positioned to OFF or AUX
  • demand pump output pressure is low
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3
Q

When will the demand pumps be commanded to operate if the hydraulic demand pump selector is in the AUTO position?

A
  • Engine Driven Pump (EDP) output pressure is low
  • fuel control switch in cutoff

1 & 4 operate when:
On Ground - trailing edge flaps in transit
In Flight - flaps extended past 1

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4
Q

On GE - 400 aircraft which demand pumps are air driven, and which ones are electric motor driven ?

A

1 & 4 - air driven
2 & 3 - electric driven

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5
Q

On N480MC / N445MC / N446MC which demand pumps are air driven, which are electric motor driven?

A

No electric driven demand pumps exist.

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6
Q

What does the magenta “RF” displayed text mean when next to a hydraulic quantity indicator mean?

A

Reservoir requires refill ( only displays no ground)

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7
Q

What is the purpose of the auxiliary pump?

A

Used for ground handling operations.

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8
Q

When is the engine driven pump pressurized?

A
  • Engine is running
  • engine pump switch is ON
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9
Q

What does a hydraulic reservoir quantity indication of .95 mean ?

A

95% of normal service level (1.0

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10
Q

What degraded or inoperative system can you expect from a loss of hydraulic system 1?

A
  • center autopilot inop
  • left outboard elevator
  • inboard trailing edge flap (moves in secondary mode)
  • nose and body gear hydraulic extension and retraction
  • nose and body gear steering
  • system 1 alternate brake source inop
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11
Q

What degraded or inoperative system can you expect from a loss of hydraulic system 4?

A
  • Right outboard elevator inop
  • outboard trailing edge flap hydraulic operation inop (secondary mode)
    -two inboard spoiler panels on each wing inop
  • wing gear hydraulic extension and retraction inop
  • system 4 normal brake source inop
  • autobrake inop
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