I washed my car yesterday. I used hot water and then hosed it off. I then got a chamois out to dry it. The car iced up whilst I was doing it. Given that it was only just freezing and the car had been in the heated garage until I started to wash it. How sensible do you think it is to use plain water in sub zero temperatures as a de-icer?
Not if it has not worked; that I agree with
And in most cases it won't work on the wings.
No water can possibly enter control linkages on a TB20? Want to bet your life on that IO?
Having been all around the aircraft, I happen to know where they are.
There are places I would not use water, or anything else. For example my elevator trim jackscrew was "lubricated" with some gunge, by a maintenance company doing the Annual. It froze at FL140, -20C or so. With an A&P, we dismantled it and cleaned it out, packing it with the right grease.
I am not talking about
hosing an aircraft down, in sub zero conditions. But I would not
hose down a simple GA aircraft with a de-icer solution either, all over, because the stuff will get into all sorts of places, displace lubricants, etc.