Ice and Rain Protection

Question 1

What systems have Rain and Ice Protection

Answer 1

1. Windshield Wipes
2. Engine Cowls
3. Wings Slats
4. ADSP
5. TAT heating system
6. Window Heating

Question 2

How do you know if Ice Condition has been encountered?

Answer 2

You get a ICE CONDITION Annunciation in the Anti-Ice Synoptic Page

Question 3

What position do the Engine Bleed Valves fail

Answer 3

They fail open position

Question 4

When does the cross bleed valve open automatically

Answer 4

When one side of the bleed system fails.

Question 5

When happens when the ice detectors detect ice.

Answer 5

They turn on both the wings and cowls anti ice system and they stay on 2 minutes after no more ice is detected.

Question 6

How do you operate the Anti-Ice system if both ice detectors fail?

Answer 6

You must use manual mode.

Question 7

When does the automatic function of the Anti-Ice system kick in?

Answer 7

at 1700 or 2 minutes after takeoff. Below that you need to set the anti ice in the MCDU prior to push back.

Question 8

Explain what happens when you set ENG or ALL or OFF in the MCDU prior to push back

Answer 8

1. OFF - the anti ice system will be completely off until reaching 1700 feet or 2 minutes than it relays on the ice detector probes and auto system
2. ENG - The Cowls will turn on as soon as the engines are started.
3. All - The cowls will come on as soon as the engines are started and the Wing Antice will come on at 40kts

With both ENG and ALL you will get an EICAS Message

ENG TDS REF A-I ENG or (ALL)

Question 9

When are the ADSP and TAT probes heated

Answer 9

When engine is running or airborne

Question 10

How many AC power sources do you need to for the windshield heat to turn on

Answer 10

2 AC power sources