You almost pulled off the "antique" effect
Try using smaller lines with the effect of the antique film, since it looked too messy to really look like it was an old film. Other than that, you've gone for the cheap laughs with a light hearted perception of racism in the early 20th Century and have now proven it to be completely unfounded, because now black men are huge and fly astride Jumbo Jets.
Clearly, they mistake the meaning of "cockpit" :P
The drawing could use a little more detail, but other than that, there isn't much you could do without fleshing out the plot, to include more oppression, since the coloured folk are incapable of flight.
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