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

[Crumpp]

all this paper is doing is estimating consumption for November and December 1940

No it estimates more than consumption, it estimates deliveries of the fuel and increases in strategic stocks.

As I pointed out, the only fact it does relate is:

Crumpp says:
It does establish the fact in October 1940 the United Kingdom had just over half the 800,000tons of 100 Octane in strategic reserve they initially required. There was a shortage of 100 Octane fuel.

Your statement about the squadron log:

NzTyphoon says:
the squadron was operational on 100 Octane fuel in February

1. There was no fuel at the airfields in any quantity. See the Table II consumption document. It is therefore unlikely this is any kind of widespread operational use.

2. Yes, that squadron used the fuel in February but no technical instructions were in widespread dissemination.

3. If the fuel was standard by June 1940, it would have eclipsed the 87 Octane Operating Instructions.

Read AP1590B properly Crumpp; nowhere does this document mention overhauling aircraft, nor does it mention "service inspections". Just to make things especially clear to you:

Paragraph 4 states "Newer engines will already have Mod.No.Merlin/136 embodied" meaning that the conversion was already being undertaken on the production line.

This document refers to older engines being brought up to the same standards:

Paragraph 4 states ...Mod.No.Merlin/77 is already being done as service maintenance

As per usual you have utterly misrepresented what these documents are saying.

Who said anything about overhauling the aircraft? Do you know what a service inspection is NzTyphoon? It is the equivalent of an annual or a FAR 21.183 100 Hour inspection.

There is no misrepresentation and the language is quite similar to Service Bulletins and Airworthiness Directives in use today.

It clearly states the two methods of compliance by part number with the technical order and specifies which one will be incorporated in future production engines. The 900(+) Single Engined fighters using the Merlin already in service will have to be converted along with the maintenance stock of Merlin engines.

It means they have to manufacture quite a few new cylinder heads and rings. That is why the conversion will take place during the cyclic service inspection.