Originally Posted by
cappt
If you have already de-iced the wing and applied type4 the procedure is not required as you will be turning on the wing anti-ice just prior to takeoff anyway.
No, as I said, we are not allowed to do that. The anti ice fluids will keep the wing clean as long as the HOT is observed.
With type I we can use the wing anti ice on the whole time, but on the NG it will trip off automatically after lift off.