Boeing 777 Anti Ice
Boeing 777 Anti Ice 15 Questions at a time (45 Questions Total)
1 / 15
What position should the WING ANTI-ICE selector be in for taxiing in icing conditions?
2 / 15
When will the ANTI-ICE ON EICAS message be displayed?
3 / 15
Which windows are provided with backup anti-fog heat?
4 / 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?
5 / 15
When can engine anti-ice be operated manually?
Engine anti-ice can be operated manually both on the ground and in flight. This means that the system can be activated to prevent ice from forming on the engine during both stationary and moving conditions. The option "On the ground or in flight" indicates that the anti-ice system can be used in either situation, providing flexibility and ensuring the safety and efficiency of the engine operation. The condition of the TAT (Total Air Temperature) being above 10 degrees is not relevant to the operation of the engine anti-ice system.
6 / 15
Window heat - An INOP light illuminates in the respective switch when:
7 / 15
The engine anti-ice systems operate through the delivery of bleed air to the inlet cowl. The hot air for engine anti-ice is provided:
8 / 15
The WINDOW HEAT switches control heating for all flight deck windows. With the switches ON, window heat operates as soon as:
9 / 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.
10 / 15
A backup anti-fogging system for the forward windows can be operated manually if there is a primary window heat system failure.
A backup anti-fogging system for the forward windows operates automatically if there is a primary window heat system failure.
11 / 15
When a Wing Anti-ice Valve is open, the wing anti-ice (WAI) annunciation is displayed below the EICAS N1 indication.
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
Probe Heat automatically operates when either engine is operating.
The level of heat provided to the pitot probes is automatically set a lower level on the ground to protect from over heating the elements. Full heat level is provided in flight.
14 / 15
The AOA vanes are heated:
The AOA has only one temperature level.
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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