Boeing 777 Anti Ice
Boeing 777 Anti Ice 15 Questions at a time (45 Questions Total)
1 / 15
What position should the ENGINE ANTI-ICE selectors be in for taxiing in icing conditions?
2 / 15
What does the WINDOW HEAT R FWD EICAS message mean?
3 / 15
Which windows are heated for both anti-ice and anti-fog protection?
4 / 15
When will wing anti-ice operate automatically?
The wing anti-ice system operates automatically only in flight. This means that the system is designed to activate and de-activate itself without any manual intervention when the aircraft is in the air. It does not operate automatically on the ground, indicating that the system needs to be manually controlled during ground operations. The answer also indicates that the system does not depend on the Total Air Temperature (TAT) being above 10 degrees Celsius for automatic operation.
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
What do the EAI symbols on EICAS indicate?
7 / 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.
8 / 15
Window heat - An INOP light illuminates in the respective switch when:
9 / 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:
10 / 15
The automatic ice detection system consists of:
The detector probes normally vibrate when the detection system is operating. If ice accumulates on a probe, the probe will vibrate at a lower frequency. The probe heater will turn on to melt the ice until the vibration frequency returns to normal. Once a detector probe has ice build-up, it is automatically de-iced.
11 / 15
The WINDOW HEAT switches control heating for all flight deck windows. With the switches ON, window heat operates as soon as:
12 / 15
When a Wing Anti-ice Valve is open, the wing anti-ice (WAI) annunciation is displayed below the EICAS N1 indication.
13 / 15
The Wing Anti-ice system is controlled by the Wing Anti-ice switch. The switch has 3 positions. The bleed air for Wing Anti-ice comes from the Pneumatic System ducting and flows to each wing through:
14 / 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.
15 / 15
What does the EAI indicate when displayed on the Primary EICAS N1 indication?
The correct answer indicates that the engine anti-ice system is open. This means that the system is actively providing anti-ice protection to the engine, preventing ice from forming and potentially causing damage.
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