thanks guys.....53......jeez, I can remember C53s flying overhead when I did my paper-round, Gloster Meteors and Hawker Hunters at RAF Chivinor on my first Air Cadet Camp in 1969. Best memory of all though is when at engineering college in Uxbridge, on the top floor you could look out and see the main runway at RAF Northolt and on this particular occasion a Constellation flying past...sure made the windows rattle. A 747 just isn't the same is it?