Before I present my written paper I would like to refer to two aspects of my subject which have been omitted from the paper, icing and static discharge.

I have no records of icing being a direct cause of accidents but it is important to appreciate the effect that it has on a pilot when flying an aircraft which picks up a lot of ice which he knows he cannot get rid of when he wishes. I look forward to the time when there will be installed on aircraft a de-icing system which will enable a pilot to get rid of ice at the right time.