Engine anti-ice (takeoff) status is OFF under which condition?

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Multiple Choice

Engine anti-ice (takeoff) status is OFF under which condition?

Engine anti-ice for takeoff is used to prevent ice from forming in the engine intake, so it should be off whenever icing conditions aren’t present. If the runway surface is Asphalt and the threshold value is greater than 10, that combination indicates warmer, drier conditions with no ice risk, so there’s no need for anti-ice. In warmer, clear conditions or on dry asphalt, the system can stay off. The other modes imply some requirement or automatic engagement based on sensors, which isn’t the case here.

Engine anti-ice for takeoff is used to prevent ice from forming in the engine intake, so it should be off whenever icing conditions aren’t present. If the runway surface is Asphalt and the threshold value is greater than 10, that combination indicates warmer, drier conditions with no ice risk, so there’s no need for anti-ice. In warmer, clear conditions or on dry asphalt, the system can stay off. The other modes imply some requirement or automatic engagement based on sensors, which isn’t the case here.

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