Wing anti ice B744
A bit of a geeky question this so here goes: on the B744 I thought that there was note that when the Wing Anti Icing (WAI) failed open there was a increment to be applied to Vref, 10 knots I believe.
However, I cannot find it referenced anywhere not least on the QRH. Maybe I am just going a bit(!) senile or does it ring any bells with anyone else. Anything similar on any other Boeings?
regards
BBK