Re post 100, and for all you aviators, let me put this in perspective, whether you fly a 172 or a 737, if you ditch, or have a forced landing, or of you activate an Elt for any reason up until recently an aircraft would be airborne within 30 mins by day and 60 mins by night. Depending on the circumstances your position would be isolated by DF then if you needed a raft, a satphone, water, first aid, or survival equipment that would be dropped to you, generally landing a few meters away at worst.this has been the case for ten years. Today, no.