The baddouble rule I believe applies when (for example) one snaps a dozen shots of the same aircraft in a sequence, or in the case described above if the photographer has shot it at rotation and then again at rotation + 1 second, +2 seconds, +3 seconds etc.
In this instance Darren may well have done that and many more besides but he has elected to submit the rotation shot (short-ish focal length, full width of the wings, landscape format) and a close-up of the nose gear retracting (longer focal length, portrait crop, concentrating on the nose and fuz only) resulting in two quite different images. So, IMHO this doesn't warrant a Baddouble rejection. Then again I'm not a screener so what do I know!
Hope that helps!
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