First really major mistake in the the show Into the Night regarding how an airliner works.

They extend the landing gear at 40,000 feet. Not possible! Landing gear would shear off, then immediately after a lot of other really bad things would start occurring. Plane would break apart. The reason is that at that altitude the aircraft must be going at least around 700km/h and the landing gear would shear off at above 400km/h. (On a 737, the maximum landing gear extended speed is 320 knots, for instance.)

Sure, the air is thinner up there, but you’re going so much faster (and must do so). No pilot would ever suggest that, much less do it.