Originally Posted by
Intruder
AFAIK, the Nacelle Anti-Ice on the 744 is automatic or manual, but Wing Anti-Ice is manual only. Maybe that's why they rejected your app...
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Don't tell me CX hired you, anyways, I don't know what manual are you reading but if you read Boeing FCOM page 3.20.3 paragraph 2 you will have a better understanding, you can even look at the panel (if you fly 744) and you can see that WAI selector have OFF, Auto and ON positions.