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
What position should the ENGINE ANTI-ICE selectors be in for taxiing in icing conditions?
3 / 15
Which windows are heated for both anti-ice and anti-fog protection?
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
An additional wing anti-ice inhibit for Automatic Wing Anti-ice operation (independent of the TAT inhibit), is active during the takeoff phase of flight.
Automatic wing anti-ice operation is inhibited for 10 minutes after takeoff. Manual wing anti-ice operation is not affected by this inhibit.
7 / 15
Window heat - An INOP light illuminates in the respective switch when:
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 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.
10 / 15
The WINDOW HEAT switches control heating for all flight deck windows. With the switches ON, window heat operates as soon as:
11 / 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.
12 / 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.
13 / 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.
14 / 15
The Wing Anti-ice system can operate automatically or can be selected ON-OFF manually by the crew.
15 / 15
The AOA vanes are heated:
The AOA has only one temperature level.
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