Slightly unrelated
I work in Bangkok and live just outside Pattaya. So, early Monday mornings, I drive up to BKK on the Chonburi motorway to spend the week there. I usually pass by Suvarnabhumi at around 6 am ( just before dawn at present). The problem is swamp flies. They seem to launch at about that time and within seconds my windcreen and (indeed) all forward facing surfaces of my car are covered in squashed insects. My screen washers have difficulty in dealing with them.
My question is - what effect does that have on aircraft windscreens during landing/takeoff at that time of day. The swamp water at the new airport is a real problem. Unless that can be taken care of properly the swamp flies will continue to swarm in enormous numbers just before dawn. And now the other question - how soon before a runway subsides under an arriving 'heavy'?