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Old 05-01-2012, 03:01 PM
41Sqn_Banks 41Sqn_Banks is offline
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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.
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File Type: jpg 100octanespecification.jpg (5.7 KB, 130 views)