Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

B737-800(2) > Air Systems > Flashcards

Air Systems Flashcards

1
Q

What is the minimum duct pressured climb and cruise?

After top of descent?

A

18 psi

10 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What does the PRSOV regulate pressure to?

A

42 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the temperature limitation of the PRSOV?

A

232 deg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The APU can provide bleed air or electrical power up to what alt?

It can provide Bleed air + electrical power up to…?

A

17,000 ft

10,000ft

Above 17,000 is electrical only

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

In the air, the APU can only supply bleed air to what?

A

Engine start systems
Cabin pressure and Thermal control
(No anti-ice or hydraulic reservoirs)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

APU bleed air is ducted into the aircrafts…?

Which side?

A

Pneumatic manifold

Left side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

If there is Dual Bleed air, what could this cause?

A

Rupturing of the manifold ducting.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

If the Dual Bleed light illuminates on the ground what you do?

A

Thrust levers to idle, turn APU switch off or investigate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the temp and pressure limitations, that shouldn’t be exceeded, on a Bleed air duct system?

A 
Temp = 232 deg c
Pressure = 60psi
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

External pneumatic power can be provided for a ground start when what 2 conditions have been met?

Temp and pressure must be controlled to?

A

Battery on
Packs off

232 deg, 60 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does the Wing Body Overheat light indicate?

A

Leak in Bleed air system on a particular side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The flight deck gets its conditioned air from which pack by default?

A

Left

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

If the cont temp zone switch is set to OFF what will happen?

A

The flight deck trim air valve is closed and the temp controls produce 24 deg c demand

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The fwd and aft passenger compartments are supplied with air from where?

A

The mixed manifold

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the temperature range for the cabin selectors?

A

18 - 30 deg approx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is a pack?

A

Small air compressors that take bleed air from the engines, cool it, filter it, then deliver it to the flight deck, fwd and aft cabin for temperature control.

17
Q

High pack flow automatic protection, for when a pack fails, is only provided when?

A

In flight with trailing edge flaps in the up psition

18
Q

How does a pack work?

A

It regulates bleed air intake.
Cools it in a heat exchanger cooled by ram air.
An air cycle machine then compresses the air.
It then enters another heat excheanger.
Cool compressed air pasees through water abstraction ducts.
Enters the mixed manifold wich can be regulated there with warmer trim air to make it more comfortable.

19
Q

What is pressure at msl in psi?

A

14.7 psi

20
Q

When carrying out a cross-bleed start, the trust on the operating engine must be increased to obtain a duct pressure of what?

A

30psi

21
Q

The PRSOV will close under what 4 conditions?

A

Startin engine (it PRSOV will close)

Fire switch pulled

Bleed air switch off

Bleed trip off

22
Q

When will the PRSOV close and BLEED TRIP-OFF light illuminate?

A

When an over temperature 254 deg or over pressure 220psi is sensed

23
Q

Recirculation fans are driven by…?

A

AC motors

24
Q

Equipment cooling fans are powered by…?

A

115 v AC

25
Q

The outflow valve is operated by 2…?

A

Cabin pressure controllers (CPC)

26
Q

How much redundancy does the outflow valve have?

How many motors drive it?

How are the motors powered?

A

Triple redundant

3DC motors

2 automatic by a CPC

1 manual from flight deck

27
Q

The outflow valve has a safety mechanism which forces it to close when the cabin altitude is above….?

A

14.500ft

28
Q

When there is a loss of all sources of AC power, how do you control pressurisation?

A

Manually

29
Q

What does SMYD stand for?

A

Stall Managment and Yaw Damper Computer

30
Q

Cruise mode is activated when?

A

Within.025 psi of selected FLT ALT

31
Q

What is the DIFF PRESS limit at a selected FLT ALT of <28,000 ft

A

7.45 psi

32
Q

What is the DIFF PRESS limit at a selected FLT ALT of 28,000 - 37,000 ft

A

7.8 psi

33
Q

What is the DIFF PRESS limit at a selected FLT ALT of >37,000 ft

A

8.35 psi

34
Q

The two positive pressure relief valves open at what psi differential?

A

9.1 psi

35
Q

A negative relief valve opens at what psi differential?

A
  • 1.0
36
Q

When does the cabin altitude warning activate?

A

If cabin altitude reaches 10.000ft

37
Q

Cabin Diff Press Indicator gets outside pressure data from where?

A

Alternate static ports

B737-800(2) (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions