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

[Crumpp]

Actually you mean January 1942, at a time where there was not a single operational squadron operating the Spitfire I.

Yes it was January 1942. That does not change the fact the transition to 100 Octane is clearly documented in Operating Notes. The transition was not complete in July1940 and is not factual to claim "ALL OPERATIONAL UNITS" in fighter command were using the fuel.

The Operating Notes even transition to 100 Octane Only in later editions of the Hurricane Notes.

Why? Operating Notes are republished periodically and capture all major changes. FACT

It also does not change the fact you cannot look at logisitical documents to prove operational history. If you want to know how to operate the aircraft look at the Operating Notes and not Strategic Fuel Reserves!!!

The transition is clearly outlined in those notes. If the operating limitations (paragraph 1) do not specify "ALL OPERATIONAL UNITS-100 OCTANE" or "100 OCTANE ONLY" then 87 Octane was the predominate fuel on the airfields. It is that simple.

It is a fact the RAF did not complete conversion to 100 Octane until around January 1942. That is evident in the Operating Notes.

Osprey says?:
It is your opinion, not a fact

It is not my opinion. It is a fact. It is how aviation publications work by convention.

There was no pool of converted units - all of the RAF's FC squadrons were active.

Prove it. Look through the logs and those units using the fuel will specifically state they are using the fuel, not just converted.

So far you have two squadrons I have seen before July 1940.

So I post the original documents which show they did have large stocks

The documents do not show they have large stocks. Go back and read my post. They show the RAF does not have a substantial amount of 100 Octane in 1939.

They wanted 800,000 tons on hand at that time and they only have ~1/8th of that.