Air Systems

Question 1

What would an amber temperature indication in either the Pack Outlet Temperature or Pack
Compressor Outlet Temperature indicate?

Answer 1

Excessive Temperature

Question 2

How is the Hot Air Pressure Regulating Valve controlled?

Answer 2

HOT AIR PB on the overhead panel

Question 3

If bleed air is being supplied by the APU or if one pack fails, pack flow will go to what rate?

Answer 3

HIGH

Question 4

With the APU supplying bleed air, what will be the pack flow if the PACK FLOW switch is in LOW?

Answer 4

HIGH

Question 5

There are three temperature selectors for the various zones in the aircraft. The pack controllers will
deliver air at the coolest demanded temperature to the mixing units. How are the individual zone
temperatures maintained comfortable if the air being demanded is always the coldest?

Answer 5

By mixing hot bleed air, through trim air valves into the distribution network

Question 6

In flight, what happens if HP bleed air pressure is insufficient?

Answer 6

Engine speed is increased automatically

Question 7

What is indicated by a FAULT light in the HOT AIR pushbutton?

Answer 7

Duct overheat.

Question 8

The pack flow control valve automatically closes for engine start when the mode selector is moved to
IGN/START. When does the valve automatically reopen?

Answer 8

After successful start or 30 seconds

Question 9

How many motors are installed on the crossbleed valve?

Answer 9

Two, one for the automatic mode and one for the manual mode.

Question 10

Can external air be used to supplement low APU bleed pressure?

Answer 10

No

Question 11

If the APU bleed valve is open and the X BLEED selector is in AUTO, what is the position of the X
BLEED valve?

Answer 11

Open

Question 12

When would the RAM AIR pb be used?

Answer 12

Ventilation and/or smoke removal

Question 13

What happens to the outflow valve when the RAM AIR pb is selected ON?

Answer 13

The outflow valve opens when cabin differential pressure is less than 1 psi

Question 14

If SYS 1 (or SYS 2) were displayed in amber, what would be indicated?

Answer 14

System fault

Question 15

What is indicated if the Cabin Vertical Speed is indicated in amber?

Answer 15

High Cabin rate of climb/descent

Question 16

What occurs when the DITCHING pushbutton is selected ON?

Answer 16

All valves below the water line close, except the outflow valve if the CABIN PRESS MODE SEL is in
MAN.

Question 17

With the LDG ELEV selector in Auto, what altitude is used for landing field pressurization reference?

Answer 17

FMGC database information

Question 18

With the LDG ELEV selector at 2, what would be the landing elevation?

Answer 18

2,000 feet

Question 19

When does the pressurization system switch auto-controllers?

Answer 19

After each landing

Question 20

What does the FAULT light in the MODE SEL switch indicate?

Answer 20

Both automatic systems have faulted

Question 21

Is cargo heat provided to the forward cargo compartment?

Answer 21

No

Question 22

What ECAM page is selected to verify aft cargo compartment temperature?

Answer 22

ECAM COND Page

Question 23

What would the FAULT light in the AFT ISO VALVE indicate?

Answer 23

A fault has been detected

Question 24

How many CAB FANS are installed?

Answer 24

Two

Question 25

If either the Blower or Extract pb is selected to OVRD, will the system run in the OPEN or CLOSED
configuration?

Answer 25

Closed.