I have allways wondered, as and when the BBMF a/c run out of hours will they be swapped for ones in collections, after all AB910 is a very significent a/c and much as she is my personal favourite, she cant fly forever.

Spitfires, even with BBMF, do not have airframe stress lives, only overhaul intervals, so they cannot ‘run out of hours’. They limit the flying hours each year to control their maintenance cycles, so long as 100LL (or something that does the same job) continues to be available, BBMF Spitfires and privately owned warbirds will continue to fly