titchuk - one of the rules of engagement for Pprune (that you apparently didn't bother to read) is that duplicate posts are not allowed.
If you have a question - decide IN WHICH SINGLE FORUM TO POST IT. If it's in the wrong place (like your copy of this in "interviews and sponsorships" then it will be forwarded to the right place for you.
Please - one question, one post, one forum.
BTW - welcome to pprune.