Hey!
Don't attack me like that!
I simply got taught 121.5 was holy. point.
I know plenty people say hi or whatever, but certainly airline pilots
should know better. With proffessional I meant "serious" pilots, i.e. serious ppl pilots as well of course.
This was not intended at all to say airline pilots are better than ppl; the only thing I mean is that
in my opinion 121.5 should only be used in actual cases of distress.
Not for training and not to tell the other company aircraft to call his operations.