Can I just clarify something for my fellow Planefags? The AZAZ0909 flights all used a zero as the next to last digit until just before Christmas, when planes with a capitalised O as the next to last digit started to appear.
These planes are my obsession. I think that the change from 0 to O signifies Obama, but the planes always seem to be running ahead of the news by a few weeks.
It may signify that the 'Fast & Furious' drug and gun-running operations that Obama set up are about to break into the mainstream news.