The U2 spy plane could fly at 80,000 feet and did not have autopilot to make adjustments. Rather than just saying I am a troll or brainwashed---just look at the data for yourself.
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The U2 spy plane could fly at 80,000 feet and did not have autopilot to make adjustments. Rather than just saying I am a troll or brainwashed---just look at the data for yourself.
I said commercial.
Right---a U2 spy plane goes even higher. In either case, a plane does not need to make constant adjustments downward to correct for the Earth's curvature.