Boeing 777 Anti Ice
Boeing 777 Anti Ice 15 Questions at a time (45 Questions Total)
1 / 15
What does the WINDOW HEAT R FWD EICAS message mean?
2 / 15
Why are the wipers never operated on a dry windshiled?
3 / 15
Which windows are provided with backup anti-fog heat?
4 / 15
When can wing anti-ice be operated manually?
5 / 15
What is the position of an engine anti-ice valve when the ENGINE ANTI-ICE selector is in AUTO and the EAI is displayed?
6 / 15
The pneumatic system isolation valves automatically open to maintain anti-icing to both wings if:
Whether the system is operating in Manual or Auto, if one wing anti-ice valve fails closed, the wing anti-ice system automatically closes the other valve to prevent asymmetrical wing anti-icing.
7 / 15
Does Wing Anti-ice operate when the aircraft is on the ground?
8 / 15
If the total air temperature (TAT) is above 10 deg.C, both Manual and Automatic wing anti-ice operation is inhibited for:
The TAT inhibit is removed any time TAT drops below 10 deg.C.
9 / 15
The WINDOW HEAT switches control heating for all flight deck windows. With the switches ON, window heat operates as soon as:
10 / 15
There are three angle-of-attack (AOA) sensors, mounted aft of and above the pitot probes on each side of the fuselage.
11 / 15
There are no controls for the operation of Probe Heat.
Indications are provided on the EICAS when one or more probe heaters are not operating.
12 / 15
The Wing Anti-ice system operates through the delivery of hot air to the three midwing slats.
The hot air for wing anti-ice is provided by the pneumatic system.
13 / 15
Each engine has a dual loop anti-ice system duct leak detection system. If an anti-ice duct leak is detected:
14 / 15
When the Engine Anti-ice is on (either in the Auto or Manual mode), the engine is selected to: Approach Idle by the EEC.
15 / 15
What is the position of an engine anti-ice valve when the ENGINE ANTI-ICE selector is in AUTO and EAI is displayed?
When the ENGINE ANTI-ICE selector is in AUTO and EAI is displayed, it indicates that the engine anti-ice valve is open. This means that the valve is allowing hot air from the engine to flow into the engine intake, preventing ice from forming.
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