Inaccurate performance data for BOB fighters in COD comparing to RL data

[JtD]

Originally Posted by 41Sqn_Banks

AP 1590B Vol. I, A.L. 4

This is the specification of 100 octane fuel in November 1940. I've never seen this anywhere else, everywhere else (even in the same manual) it's simply called 100 octane fuel.

I've also seen this in later manuals, just found it again in a late 1942 Pegasus engine manual. It still carries the same provisional specification, which illustrates how meaningless this is.

I've also attached two examples of how pilot notes were kept up to date in practice. Hand written, if necessary.