frontlefthamster - I think most here will know where to go for the answers BUT knowing where to look and finding is a very different scenario. Firstly the "rule book" as it is written by civil servants is so vast that searching in any logical manner is useless. Secondly when you find the required publication then using the search facility will bring such a myriad of possibilities that it is oft necessary to read the damned publication in full. So the sensible pilot will ask for guidance here because, as with most things in life, someone has been there before and can offer a little help as is the way with PPRUNE.