Watching the clip a few more times, we can see that even after airborne, a significant amount of contamination remained. Not safe. Let's say, wing temperatures soon become different if there is shadow in one and sun exposure on other, it may get worse.
As I mentioned before, they are experienced, but now I agree that they may be crazy.
How about the Pre takeoff Contamination Check, From outside the cabin?
Have you ever requested it just prior to GO?
Was there anybody to respond and perform it?
Do some airports have special vehicles with platform to inspect the wings and people ready to attend?
The point is: all books mention this procedure, but in reality, does it ever happen?
Why write and instruct crews to conduct a procedure that is unrealistic, and if requested, may make a fool out of the captain, that would be only following his book.
- Tower, can you send some one here to check my wings? Or
- Ice man can you perform the PTCC here in taxiway X?
Joke or just following procedures?