Spit IIa

[Crumpp]

Some flew it on the edge, some flew it as per the handbook.

Umm there is no difference. The handbook tells you how to fly it to the edge...

What do you think the engineers are doing when they tell you those parameters??

Here is a secret....they are telling you how to get the maximum performance out of the aircraft, live to tell about it, and maybe be able to use the airplane on the next mission.