Well I watched it. As you said some good flying sequences. Steve McQueen seemed to specialise in playing total creeps - I wonder if he was one in real life. Interesting seeing Michael Crawford playing the young air gunner, and Bernard Braden as the doctor. I also saw Burt Kwouk at the pre flight briefing but he didnt get a credit at the end. Usual lazy train continuity mistake, the loco changed its class and number somewhere between Cambridge and London! Still at least the B17 didnt change to a B24 in mid-flight!
3/10 - and that was for the flying sequences!