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Old 30th May 2012 | 15:19
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hamil
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Joined: Mar 2003
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From: Europe
744 icing detection x actual icing condition
Hi,

Have a question concerning 747 A/I operation:

Scenario

- EICAS alert message: >NO ICING

However ...

- TAT is inside 10ºC to -40ºC range, there is visible moisture, etc.

Should nacelle anti-ice be on or off?

Thanks.
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