Originally Posted by
flypaddy
My type (B737) is more concerned with frost formed on the upper wing surface. More fuel means more contact with the upper wing surface and more frost in the wrong place, hence why the guidance is to consider tankering carefully.
I had not considered the effect of the fuel/oil heat exchangers. Mind you, if deicing is on stand, the decision would need to be made before engine start.
I suppose I could transfer all remaining fuel to the centre tank and fill the wings with nice fresh warm fuel but I imagine this is time consuming. In warm humid destinations this may be the only option though.
I’ll continue with my wet-finger-in-the-air approach to the decision. Thank you again for your useful input.
been a while but I remember the 737 only emptied the centre tank into the wings not visaversa