Hi guys,
I often play with a Captain a quiz game with aeronautical questions. He ask me something and I have to find an answer, there is no time limit for that and we may use all the means available to get it (my Iphone was really useful during a transit
); and vice versa. Now, it's my turn to answer him, and the heading of this thread is the question:
Why is the TA set at 18000 ft in the USA?
(the only tip he gave me is that it's a technical reason)
Thank you mates
PS: I've never flown in the USA, he was an instructor in a flying club there..