Pneumatics

Question 1

Can love animals be in cargo?

Answer 1

In the front.

Question 2

Components of the cabin pressure system

Answer 2

Cabin pressure controller.... CTR 
One outflow valve
One negative pressure relief valve
One positive pressure relief valve
One static port

Question 3

When does positive pressure relief valve open?

Answer 3

When diff pressure exceeds 8.6

Question 4

What is the differential protection provided by the negative pressure relief valve?

Answer 4

Limits negative diff to -0.5 psi

Question 5

Cabin will go to what max if dump button is pushed?

Answer 5

12,400… This is used for smoke removal or EMER evacuation

Question 6

How is landing field elevation set?

Answer 6

In the Fms. If it is not avail then mode rotar switch is set to LFE and it can be set on overhead panel.

Question 7

When will LFE auto go to departure field?

Answer 7

If present pressure alt is below 10,000 feet or 5,000 above field elevation

Question 8

When does the cabin high alt warning come on?

Answer 8

9,700 feet.

Question 9

What happens of dump button pressed a second time?

Answer 9

System returns to normal operation.

Question 10

Can cabin go higher than 12,400?

Answer 10

Yes, by using the manual mode.

Question 11

What happens in manual mode on the ground?

Answer 11

There is not automatic cabin depressurization.

Question 12

When will recirculating fans automatically turn off?

Answer 12

If dump button is pushed or smoke is detected in the recirculation bay.

Question 13

What is a a controller?

Answer 13

Air management system.

Question 14

Air sources?

Answer 14

Engine, APU or external…. Huffed cart of air condition nose

Question 15

Locations of high and low bleed air?

Answer 15

Sox and tenth stage.

Question 16

Bleed buttons in what happens?

Answer 16

AMS automatically regulates bleed air demand.

Question 17

What happens when high pressure air is being used?

Answer 17

A valve in stage six prevents high pressure air from back flowing into stage six.

Question 18

What closes the APU air valve?

Answer 18

Either auto as needed by system of push out APU bleed valve to do manually.

Question 19

Bleed air leak protection

Answer 19

Dual loops along side of bleed air line. If one is detected the bleeds on detected side shut down and yellow bar will illuminate on the bleed air bar.

Question 20

What is the AMS priority for using bleed air?

Answer 20

On side engine, off side engine and APU if available. APU cannot be used for anti ice.

Question 21

Engine bleeds open when?

Answer 21

Set to auto

Engine bleed is avail

Question 22

Mixture of air with recirculation fan running

Answer 22

52 % fresh and 48 recycled

Question 23

Ram air auto when?

Answer 23

Both packs off or failed, and altitude is less than 25,000

Question 24

What is CPCS

Answer 24

cabin pressure control system

Question 25

Absolute Max diff

Answer 25

8.77