Placing the Bell P39 Aircobra.

[Jukka Juutinen]

If Spits did not use vertical dives (not that BS of 60 deg as "vertical"), then why is that mentioned in the Spitfire bible? It is mentioned on the section dealing with complaints of wrinkled wings in Spit IX fighter bomber ops. It is clearly mentioned that most wrinkling was experienced by pilots who dove vertically (not at 60 deg) and pulled out hard at low altitude and escaped at tree top level.