Anti-ice/Rain protection systems

Question 1

What areas receive anti-ice protection?

(FCOM 3.20.1, 3.20.3, 3.20.4)

Answer 1

• Wings
• Engines
• 3 pitot-static/2 TAT/1 AOA
• Forward windows = anti-ice and anti-fog
• Side windows = anti-fog only

Question 2

Under what weather conditions is NAC anti-ice required to be ON?

(FCOM SP.16.7)

Answer 2

10C or less with visible moisture (except below -40C SAT)

Question 3

Is the TAT probe heated? When?

(FCOM 3.20.4)

Answer 3

Yes. Inflight only.

Question 4

What indications do we have when engine anti-ice is on? Wing anti-ice?

(FCOM 3.20.1)

Answer 4

Displayed on EICAS.

Question 5

When is automatic WAI operation inhibited?

(FCOM 3.20.2)

Answer 5

• TAKEOFF mode is selected, and
• Less than 10 minutes has elapsed after liftoff

Question 6

With TAT more than 10C, WAI selector on. How long after takeoff is WAI inhibited?

(FCOM 3.20.2)

Answer 6

5 minutes.

Question 7

Which windows are provided Anti-ice and Anti-fogging protection?

(FCOM 3.20.3)

Answer 7

• Forward windshields= Anti-ice and anti-fog.
• Side windows= Anti-fog.

Question 8

When does anti-fogging system operate automatically on the forward windows?

(FCOM 3.20.3)

Answer 8

When forward window heat anti ice fail.

Question 9

How do we reset a windshield heat controller fault?

(FCOM 3.20.3)

Answer 9

Select OFF for 10 seconds and reselect ON.

Question 10

When are the AOA and Static ports heated?

(FCOM 3.20.4)

Answer 10

Any time an engine is running.