For the case of the wing anti-ice control valve stuck in the open position MEL, are there any performance penalties for take-off performance? Logically speaking I thought there should be (similar to engine anti-ice valve open) but there is no mention of take-off performance penalty in the MEL. Why is this so?
Neither is there any option to select this in the MEL tab in the take-off Flysmart application. There is one for engine anti-ice valve open though.
The only way I can do so is to select both engine and wing anti-ice on in the performance page for the calculations.