OLA Pneumatic

Question 1

What does the pneumatic system supply high pressure air to?

Answer 1

Air conditioning
Engine starting
WAI
Water pressurisation
Hydraulic reservoir pressurisation

Question 2

What are the possible sources of high pressure bleed air?

Answer 2

Engine bleed
APU bleed
HP ground connection

Question 3

What is the crossbleed duct?

Answer 3

The part where bleed systems are interconnected

It is basically the horizontal line with the crossbleed valve on it

Question 4

When do the engine bleed valves open?

Answer 4

When engine bleed pressure is above 8psi and the APU bleed valve is closed

Also needs no faults detected, ENG FIRE pbs in and engine start valve closed

Question 5

What pressure do the IP and HP valves aim to deliver?

Answer 5

32-40psi

Question 6

Which computers supply information to the ECAM BLEED page?

Answer 6

BMC1 and BMC2

Question 7

Where is the engine bleed valve on the ECAM BLEED page?

Answer 7

Bottom of each side (above the HP/IP and below the box)

Question 8

Where is the engine bleed high pressure valve on the ECAM BLEED page?

Answer 8

This is the valve between the IP and HP

Question 9

Where is the engine bleed pressure indication on the ECAM BLEED page?

Answer 9

In the box half way up

Question 10

Where is the engine bleed temperature indication on the ECAM BLEED page?

Answer 10

In the box half way up

Question 11

Where is engine bleed temperature measured?

Answer 11

Precooler outlet

Question 12

What does the APU BLEED switch on the overhead panel control?

Answer 12

APU BLEED valve

Question 13

When does the APU bleed valve appear on the ECAM BLEED page?

Answer 13

When the APU master switch is on

Question 14

Is the crossbleed valve normally open or closed when engines are running?

Answer 14

Closed, in order to isolate each side of the bleed system