Mariner is absolutely correct in his statement. However, it should be remembered that this aircraft was being operated as a private aircraft on a private flight. It was not being operated as a public transport category flight, Therefore, "PPL" rules applied. (You could fly a 747 on a PPL if you could find someone to insure you). By the way, I hear that one of the pilots has made a reasonable recovery but has no memory of the accident. The other still has serious medical problems.