The XB 15
This was an Airforce titan. This plane was so big that they could barely find engines big enough for it to fly faster than 200 mph. It was never developed any further than this, but it did make a decent cargo plane!
CASA C-212
This hulking aircraft was used by nearly 50 military bases all over the world and over a dozen passenger airlines. Many, if not most, were American based. It has had 11 fatal crashes.
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