Question(s) re deicing fluid
Flew out of LHR on Thursday (BA Boeing 757). Before take off we were deiced. Can anyone answer the following for me:
1) In the conditions at about 1300 local what was the maxiumum time between deicing being applied and need to re-apply?
1a) How do the conditions affect that time (if at all)
2) What is the deicing fluid made up of?
3) Does the fluid affect the flying characteristics of the plane?
4) I was surprised to note what appeared to be the fluid still flowing very slowly and stickily accross the top of the wing on approach to Rome. Does the rate at which the fluid "washes off" the wing vary according to altitude (or other coditions) and how long might it still be present after flying (if not providing any protection any more)?
Man thanks.