Hiya Back door. We are of a similar age and my Dad was a Flight Engineer on the 747 too, retiring as the -400 came into service. I loved going on trips with him back in the 70s. The upper deck was a lounge and the flight deck door was always open. Very happy days indeed. By an extraordinary stroke of luck, I have ended up as a captain on the -400. It flies just like it looks, beautifully. It is without a doubt the finest aircraft I have flown in my 30+ year career.