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another interesting fact Boeing patented the retracting mechanisim used on the P-40 etc but this was the first time they used it themselves.
The Last of the Line has great photos!
Holy crap! Right? It's like they took every picture in the Boeing archive and published it! "Here is the flap at 10 degrees", "Here is the flap at 11 degrees"...not exactly what's in there, but you know what I'm talking about!