Could someone tell me how much frost/ice is acceptable on a 737 taxiing for departure?
I flew on an early departure out of Melbourne recently, on a cold clear morning.The aircraft had been in the shade of the terminal, and the outer portion of the wing was coated in frost, with a visibly rough texture to the surface.
I was hoping the frost would melt in the sunlight as we taxied to the threshold, but there was still some remaining as we began the takeoff roll.
From my modest flying experience, I remember that all ice and frost had to be removed before flight. I have confidence in the crew's decision, but I'd feel a bit more comfortable if I knew what was acceptable and what wasn't.
Thanks in anticipation.