Chapter 2 Air Systems

Question 1

What happens when you put the X Bleed selector in the SHUT position?

Answer 1

Overrides logic and commands the crossbreed valve closed.

Question 2

What happens when you put the X Bleed selector in the AUTO position?

Answer 2

Auto logic controls the crossbreed valve:

• Open if APU bleed valve is open
• closed if APU bleed valve is closed
• closed if a bleed leak is detected

Question 3

What happens when you put the X Bleed selector in the OPEN position?

Answer 3

Commands the crossbleed valve open, overriding logic

Question 4

What is the indication when the external HP air cart is connected?

Answer 4

A PSI value is displayed on the left side of the ECAM BLEED page. As long as, no other internal air sources are provided.

Question 5

What do IP and HP represent on the ECAM BLEED page?

Answer 5

Intermediate pressure

and

High pressure

Regarding engine bleed valves

Question 6

Are the intermediate pressure check valves depicted on the ECAM BLEED page?

Answer 6

No, but they are represented by the letters IP

Question 7

What are the indications that the APU is in use?

Answer 7

APU bleed valve indicates open (green circle and connecting line)

and

APU BLEED is presented in green on the memo section of the E/WD

Question 8

In which areas can a bleed leak be detected?

Answer 8

Wings- each wing’s bleed air duct

Engine pylons- area from engine to the respective wing bleed duct

Aft fuselage- area surrounding the APU bleed air duct

Question 9

Zone regulator channel failure:

What is the indication of a Primary channel failure?

Answer 9

ALTN MODE appears at the top of the COND page

Question 10

Zone regulator channel failure:

What is the indication of the secondary channel failure?

Answer 10

All temperature values are replaced with amber Xs

Question 11

Zone regulator channel failure:

What is the indication when both the Primary and the Secondary channels fail?

Answer 11

PACK REG appears at the top of the COND page

and

All temperature values are replaced with amber Xs.

Question 12

Pack regulator failure:

What is the indication of a Primary channel failure?

Answer 12

ECAM failure message appears on the E/WD memo section

All pack info presented on the Bleed page is still presented

Question 13

Pack regulator failure:

What is the indication of the secondary channel fails?

Answer 13

All temperature indications for the corresponding pack will be replaced with amber Xs

Question 14

Pack regulator failure:

What is the indication of a Primary and Secondary channel failure?

Answer 14

All temperature indications for the corresponding pack will be replaced with amber Xs

ECAM failure message appears in the E/WD memo section

Question 15

Which cargo compartment is heated and ventilated?

Answer 15

Only the aft compartment is capable of having its temperature controlled.

Question 16

How do you control the temp in the aft cargo compartment?

Answer 16

Using the controls located on the overhead CARGO HEAT panel

Question 17

How do you control the temp in the forward cargo compartment?

Answer 17

You can’t. Only the aft is controllable

Question 18

How can you reference the temperature in the Aft Cargo compartment?

Answer 18

Reference the ECAM COND or CRUISE pages

Question 19

How many pressurization controllers are installed on the aircraft?

Answer 19

2

Question 20

How do you know which pressurization controller is currently active?

Answer 20

Designated as SYS 1 or SYS 2. It will be displayed on the ECAM CAB PRESS page.

Question 21

When will the pressurization controllers switch to the standby controller?

Answer 21

Automatically, shortly after landing or should the active fail.

Manually, by placing the MODE SEL push button to MAN for 10 secs and then returning it to AUTO (lights out mode)

Question 22

How does the LDG ELEV selector work when selected to the AUTO detent?

Answer 22

AUTO detect position allows the FMGCs to automatically provide the pressurization system with landing field elevation.

Question 23

How does the LDG ELEV selector work when selected outside of the AUTO detent?

Answer 23

Landing field elevation is set manually by selecting the appropriate elevation. (Displayed in thousands, not hundreds)

Question 24

When do you manually select the landing field elevation?

Answer 24

When BOTH FMGCs have failed or if the airport is not in the FMS database.

Question 25

Manual pressurization controls:

What happens when you press the MODE SEL push button?

Answer 25

Enables use of the MAN V/S CTL toggle switch to manually control the outflow valve.

and

Deactivates the AUTO pressurization mode.

Question 26

Manual pressurization controls:

How does the MAN V/S CTL toggle switch work?

Answer 26

UP commands the outflow valve to open, raising the cabin alt, decreasing differential.

DN commands the outflow valve to close, lowering the cabin alt, increasing differential

Question 27

How do you obtain information about the pressurization system?

Answer 27

System performance can be monitored on either the CAB PRESS or CRUISE page

Question 28

Does the crew need to reset the landing field elevation of returning to the departure airport after takeoff?

Answer 28

No. ABORT mode will automatically return the cabin to match the departure airport’s field elevation.

Question 29

What happens when the crew presses the DITCHING push button to ON?

Answer 29

The outflow valve will close (if MODE SEL push button is in AUTO

Emergency Ram air inlet will close

Avionics ventilation inlet valve will close

Avionics ventilation extract valve will close

Pack control valves will close.

Question 30

Which valves are located below the airplane’s float line?

Answer 30

Outflow valve
Ram air inlet
Avionics ventilation inlet
Avionics ventilation extract
Pack flow control valves

Question 31

Which configuration requires pilot action in order to vent smoke within the avionics compartment overboard?

Answer 31

The AVIONICS SMOKE configuration

Question 32

How does the crew remove smoke from the avionics compartment?

Answer 32

By pressing both BLOWER and EXTRACT push buttons.

Question 33

What happens when the crew presses both BLOWER and EXTRACT push buttons.

Answer 33

It allows additional air from the air conditioning system to enter the compartment which forces all air within the compartment overboard.

Question 34

What does the amber FAULT indicate on both BLOWER and EXTRACT push buttons.

Answer 34

FAULT appears as the result of smoke being detected in the avionics compartment.