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UPS A300F > A300 Classic SKV Hydraulic System > Flashcards

A300 Classic SKV Hydraulic System Flashcards

1
Q

How do you know the Power Transfer Unit (PTU) is working?

A

You can confirm PTU operation on the hydraulic systems page

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2
Q

While using the RAT to pressurize the Yellow hydraulic system, why won’t Yellow system pressure be available for braking during landing?

A

Yellow system pressure cannot be guaranteed below 140 KIAS

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3
Q

On the ground, when may the indications for hydraulic quantity be outside the upper green arc (Top Hat) on the hydraulic quantity indicators with white marks?

A

OAT below minus 10° C - indicator must be on or above lower left white mark

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4
Q

How many engine driven hydraulic pumps are there?

A

4-one Blue, two Green, one Yellow

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5
Q

What system does the Ram Air Turbine (RAT) power?

A

Yellow system

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6
Q

How many systems can a Power Transfer Unit (PTU) pressurize at the same time?

A

Only one, either the Blue or Yellow system

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7
Q

If the Yellow and both Green hydraulic pumps fail, extending the RAT will recover what?

A

Recover only the Yellow system

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8
Q

What is transferred using a PTU?

A

Hydraulic power only

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9
Q

Which component is not used inflight to recover a failed hydraulic system?

A

Hand pump

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10
Q

If the engine driven hydraulic pump for the Yellow system fails, what is available to recover the Yellow system?

A

Green to yellow PTU and the yellow RAT

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11
Q

How does a Power Transfer Unit (PTU) work?

A

It uses the Green hydraulic system to pressurize either the Blue or Yellow hydraulic system

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12
Q

What is the hydraulic hand pump in the right main gear area used for?

A

It opens cargo doors when electric power not available

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13
Q

What does the Parking Brake ACCU PRESS switch do?

A

It momentarily activates Yellow hydraulic system electric pump

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14
Q

On the ground, when may the indications for hydraulic quantity be outside the upper green arc?

A

OAT above 20° C - indicator may indicate quantity as high as the upper right mark

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15
Q

What is the purpose of the hydraulic priority valves?

A

To give priority to primary flight controls and brakes when hydraulic system pressure is low

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16
Q

Why does the yellow system Hydraulic Fire Valve close when a low quantity condition is sensed?

A

This saves fluid for RAT operation

17
Q

What are the designations of the three hydraulic systems?

A

Blue, Green, Yellow

18
Q

The parking brake could be affected by a total loss of fluid from which hydraulic system?

A

Yellow

UPS A300F (25 decks)

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