Thank you
Hello ,
thank you all very much for your helpful information! It is also encouraging.
MLS-12D: Regarding gliders. The problem is: I think there is no
glider with two seat side by side. The instructor hast to sit behind you. That is much more difficult. If a hearing impaired person is not sure whether he or she has understood a command properly, he or she can turn to the head of the instructor for some moments. Yes - lip-reading from half-profile is possible. Some of us hear words and see the lips - a two-way-perception, since we people with hearing aids are not completely deaf.
Thanks too for info about H. Kisor. :-))
Best wishes Ralf