Spitfire supposed to dive better than the 109?

[jf1981]

Are you sure he survived all right ?
That speed is more than the Spit can handle, it should overspeed from 725 km/h IAS.

[FFCW_Urizen]

i start loosing parts of my plane at around 400-450 mph IAS, depending on alt. Maybe you killed the pilot and the spit was just going in, but then otoh, i wouldn´t be surprised in a little dm hiccup.