Steve - You'll see in the logos folder that almost all files have a three-letter name.
However, Air France so often use AFnnn instead of the AFRnnn that they should be using, that there are AF2.bmp, AF3.bmp files etc to get round the problem. You could do the same thing with BA... where it should be BAW... .
The only exception is AF1, which is used by the US president. So unless you do anything about it, AF1nn flights also give the Air Force One logo.
Rod