Aft, its only the Orkneys, this is the home of the world's shortest Commercial Flight after all - Pappa Westray to Westray, and, I have done it, all 2 minutes of it!! (it is part of an inter island flight from Kirkwall on a Britten Norman Islander <a tiny plane that is like someone's battered old Volvo Estate, but only with wings>).
This is just an example of the sort of practicality people in the islands still have which, unfortunately has been lost everywhere else.
Post 5003. E5003 is one of my favourite numbers (don't ask).