Ice & Rain Protection

Question 1

How does the system sense ice?

Answer 1

2 probes vibrate at a high frequency, when the frequency decreases it sends a message notifying ICE &ICE DET illuminates

Question 2

How do you do the ICE DETECTION TEST?

Answer 2

press the ice test for 5 seconds and you should receive a AMBER ICE on ED1 & ADS heat test ok on status page

Question 3

How are the Wings and cowls heated?

Answer 3

Hot bleed air from either 6th or 10th stage bleed ait

Question 4

Do the cowl valves fail open or closed?

Answer 4

Closed

Question 5

What valves fail in the position they are in?

Answer 5

ISOL valve and wing x-bleed valve

Question 6

In what order do you turn on the Anti-ice system?

Answer 6

Wings first then cowls. Does not matter which way it is turned off.

Question 7

What controls the anti-ice system?

Answer 7

ADSHC Air Data Sensor Heat Controllers. Ensures that that probes and sensors are heated prior to T/O regardless of switch position.

Question 8

What does the T2 probe do?

Answer 8

it is mounted in the engine cowling and sends data to FADEC to help give info to set power and control geometry stator vanes