Air Management Flashcards

1
Q

List the items that use bleed air

A
Environmental control system (ECS)
Engine start
Engine, wing, & horizontal stab anti-icing system
Cargo heating system
Main cabin door pressurization seal
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2
Q

When is the cabin temp control xferred to the VIP seat panel?

A

When the detect C is selected to the PAX CABIN TEMP control knob

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3
Q

In the event of a bleed leak detection, what light will illuminate in addition to an associated CAS message?

A

The PACK, BLEED 1, BLEED 2, or CABIN APU amber light

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4
Q

When is the Outflow Valve (OFV) indication on the Environmental Control System (ECS) synoptic page displayed?

A

Only available on the ground

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5
Q

What are the potential sources of bleed air that the Pneumatic System Controller (PSC) can automatically select from?

A

Engines, APU, external cart

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6
Q

Is it possible to have bleed from the APU and engines simultaneously?

A

No

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7
Q

During normal operation on the ground and for taxiing, what is the primary source of bleed air?

A

The APU

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8
Q

What is the primary source of bleed air in flight?

A

Engines

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9
Q

When will the bleed air source be automatically transitioned to the engines?

A

When plane starts running for takeoff (engines TLA’s higher than 50*)

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10
Q

The xbleed shutoff valve is automatically commanded to close for what conditions?

A

Bleed leakage, over pressure, engine fire, or if a failure condition is identified

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11
Q

Can an external ground connection be used to supply pressurized air for an engine start?

A

Yes

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12
Q

If a huffer cart is being used and is NOT adjustable, what range should the pressure be in?

A

Between 32 - 60psi

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13
Q

When is fast cooling/warming enabled on hot/cold days?

A

When the difference between the cockpit/cabin temp set point and cockpit/cabin zone temp is 6*C or higher

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14
Q

What happens to the recirculation fan during fast cooling/warming ops?

A

Automatically sets higher speed to optimize system performance

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15
Q

If the air conditioning pack fails what does the PSC automatically do?

A

Engages the pack backup operational mode and controls cabin and cockpit temp.

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16
Q

What is ram air ventilation used for?

A

Non-pressurized flight or for smoke evacuation

17
Q

When will the PSC command the emergency RAM air door open?

A

In case of loss of the air conditioner PACK and the PACK backup systems

18
Q

How can the emergency RAM air door be manually commanded open?

A

Through the DUMP button on the pressurization control panel OR loss of both PACKs

19
Q

How is the Cargo Heating System operated?

A

Automatically by the PSC

20
Q

When is the main cabin door pressurized seal inflated?

A

After takeoff

21
Q

How can the outflow valve be modulated?

A

Either automatically or manually

22
Q

What position are the Negative and Positive Pressure Relief Valves (NPRV & PPRV) normally in?

23
Q

What is the cabin altitude rate of change when moving the Cabin Alt knob up or down?

A

50 ft/min steps

24
Q

What does pushing the MODE selector button on the pressurization panel allow for?

A

Manual control of the press system through the CABIN ALT knob

25
What happens when the dump button is pressed in the auto mode of operations?
Cabin is depressurized at a constant rate of 2,000 ft/min up to 12,000ft and emergency Ram air door is opened.
26
What happens if you press the dump button while in manual mode?
Cabin rate of change will increase with the duration of of the dump command until either command is removed or altitude limit function disables it when cabin reaches 14,800 +/- 200ft. Emergency RAM door is also opened.
27
Max differential over pressure
10.4psid
28
Max differential negative pressure
0.5 psid
29
Max differential pressure for TO & landing?
.2 psid