Pneumatics Flashcards

1
Q

APU air is available in flight up to an altitude of approximately ____.

A

22,000 feet

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2
Q

The Equipment cooling system draws air from___.

A

the cabin

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3
Q

If CACTS Control of Cabin Temperature Zones fail, pack flow rate is modulated to achieve a pack outlet temperature between ____ and ____ degrees F.

A

40, 110

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4
Q

The left and right body bleed air pressurizes the ____.

A

C1 and C2 air driven hydraulic pumps

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5
Q

The expanded air display is presented on the EICAS when __________.

A

the air synoptic is displayed on an MFD

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6
Q

On the ground, if the equipment cooling system is inoperative, ____.

A

the ground crew call horn sounds and an EICAS message appears

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7
Q

The APU bleed air switch is normally left in the ____ position.

A

AUTO

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8
Q

The aft and bulk cargo compartment temperatures are controlled via lavatory/galley vent fans which pull air across temperature sensors for each compartment. If both vent fans fail, the cargo heat system ________.

A

is not provided

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9
Q

Equipment cooling will automatically switch to the override mode when ____.

A

the forward cargo fire extinguishing system is armed

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10
Q

What is the maximum pressure altitude for an APU to Pack takeoff?

A

6900

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11
Q

The AIR synoptic shown here indicates a bleed air loss in the ____ duct.

Left and Center body isolation valves closed

A

left body

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12
Q
  1. Refer to the synoptic. With a left body duct loss, which air driven hydraulic pump(s) (ADPs) is/are still available?
A

C2 ADP

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13
Q

Using info presented on this synoptic, with the APU running, is APU air available for other bleed air functions

A

APU air is not available for any bleed air function.

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