ATA 35 -Oxygen

Question 1

Description of cockpit oxygen system ?

Answer 1

1 bottle of oxygen
1 manual isolation valve
1 pressure regulator
2 overpressure lines and 1 green safety port
1 supply valve (solenoid)
1 distribution manifold

Question 2

Which pressure on low pressure circuit activates REGUL LO PR message on ECAM DOOR page ?

Answer 2

50 psi

Question 3

Oxygen pressure threshold to box oxygen pressure on ECAM Door page ?

Answer 3

1500 psi —> check Limitations on ground

Question 4

Oxygen pressure threshold green flash on ECAM Door page ?

Answer 4

Only on some msn
800 psi (or 600 psi for one msn)

Question 5

Oxygen pressure threshold amber on ECAM Door page ?

Answer 5

400 psi

Question 6

N / 100 % button. N position = mixed air until which altitude ?

Answer 6

35 000 ft

Question 7

Emergency selector. Continuous oxygen flow above which altitude ?

Answer 7

30 000 ft
(Provide 100% selected )

Question 8

Oxygens masks in cabin fall. What does mean the green memo OXY PAX ON ? And amber ?

Answer 8

Green = 2 CPC detect excessive cabin altitude
Amber = 1 or 2 CPC do not detect excessive cabin altitude

Question 9

Auto fall out of oxygen mask at which altitude ?

Answer 9

14 000ft
16 000ft if HI ALT LANDING pb

Question 10

Autonomy of cabin oxygen altitude ?

Answer 10

15 min
13-15-22min depending on aircraft

Question 11

Autonomy of smoke hoods ?

Answer 11

15 min