Originally Posted by
SpringHeeledJack
A KC-135 of 1963 vintage just gone over noisily over central London. They do pass this way regularly, but this one for reasons unknown was louder than usual, almost 70% of an old VC-10 departure. Perhaps it's one of those that haven't been re-engined ?
Came up on Mode S as a regular KC-135R with CFM56s. Some of them can still be quite noisy.