[NZtyphoon]

Originally Posted by pstyle

I have made a list, of all the references I can find to the use of 100 in COMBAT from freburary 1940 to September 1940, by squadron.

The list is not exhasutive and simply indicates the first date at which I can find various references. I have grouped these by the type of reference, from explicit mentions of particular boost or octanes (in photos or reports), down to mentions of "gate" or "emergency power/ boost cut out" which are almost as persuasive as direct references to the use of the 100 fuels. I am going to continue researching this to see if I can find further evidence/ data that indicates at a minimum the "in-use-by" date for the various squadrons.

Here is the results:

referecnes to +12 Lb and/or 100 octance
602 squadron: February 1940 - photo of squadron aircraft in in pre-BoB paint with 100 written on the fuseage + squad operations book entry on 16/2
54 Squadron: May 1940 - combat report from colin gray on 24/5 & AL Deere Combat report 26/5
19 Squadron: May 1950 - combat report from flt Lt Lane 26/5
610 Squadron: July 1940 - photo of 100 fuel bowser refuelling A/C
41 Squadron: June 1940 - combat report Flt Lt Webster 19/6
64 Squadron: August 1940 - combat report from P/O Donahue
72 Squadron: September 1940 - Combat report from P/O Elliot 9/9

References to Boost Cut out/ emergency boost/ "gate"
74 Squadron: May 1940 - combat report from P/O Freeborn 24/5
611 squadron: June 1940 - combat report from P/O Brown 2/6
610 Squadron: June 1940 - combat report order to "gate" 12/6
616 Squadron: August 1940 - combat report from F/O Dundas 15/8
603 SQuadron: August 1940 - combat report from P/O Morton 28/6
152 Squadron: September 1940 - combat report from P/O Hall on 4/9
66 Squadron: September 1940 - combat report from F/O Oxsrping 6/9
234 Squadron: August OR September 1940 - recollections from P/O Doe
92 Squadron: September 1940 - recollections from Goeffrey Wellum

Originally Posted by NZtyphoon

plus add 11 Hurricane squadrons
17, 56, 73, 79, 87, 85, 151, 229, 245 Sqns May,

145 Sqn, July,

1 Sqn. August,

43 Sqn June

That makes 18 squadrons Feb-July another 6 in August...oops! that equals 24 in August plus another eight September = 32 squadrons. Why that's exactly twice as many squadrons as the 16 stated by Morgan and Shacklady tssk tssk tssk.
Breakdown = 15 Spitfire, 17 Hurricane.

Which ever way Crumpp tries to argue, fact is there are twice as many squadrons known to be using 100 Octane fuel by September 1940 than both he and Morgan and Shacklady say...