ICE PROTECTION

Question 1

ICE TEST msgs (LR)

Answer 1

1) Ice Det 1(2) Fail
2) Ice Conditions
3) BLD 1(2) Low Temp
4) Cross Bleed OPEN (non-PRSOV)

Question 2

Anti-ice valves Open on ground when?

Answer 2

Ice is detected >25 kts in AUTO / ALL

Question 3

Ice Detection override switch on ENG. what happens?

Answer 3

1) Engine heat immediately

2) Wings and Stab come on >25 kts and ice is detected

Question 4

Anti-Ice System ON, Left Pack auto OFF below what ALT?

Answer 4

24,600 fr

Question 5

Ice Test msgs (XR)

Answer 5

1) Ice Det 1(2) Fail
2) Ice Conditions
3) BLD 1(2) Low Temp
4) Cross Bleed OPEN (non-PRSOV)
5) CLR/INOP 1-2
6) CLR ICE 1-2

Question 6

What are some wing Anti-Ice sensors?

Answer 6

Overpressure, low pressure, differential pressure sensors

Question 7

When are the”Pitot Probs” heated?

Answer 7

When engines are running

Question 8

Don’t perform “Ice Test” for longer than?

Answer 8

15 seconds

Question 9

How long is Ice detector cycle?

Answer 9

60 sec. (Detect ice, melt it off, cool down, detect ice again)