[Sloth]

Terminal velocity through the atmosphere is approximately 150 mph, depending on the aerodynamic properties of the falling body.

VERY dependent. We are talking about an object that routinely travels *500 mph* horizontally under, say, 80,000 - 90,000 lbs of thrust, but which weighs 200,000 lbs or so.

[E. Pluribus Unum]

VERY dependent. We are talking about an object that routinely travels *500 mph* horizontally under, say, 80,000 - 90,000 lbs of thrust, but which weighs 200,000 lbs or so.

500 mph with two jet engines pushing it. You forgot about that part.

Pieces of a disintegrated aircraft are not very aerodynamic, so I probable overestimated their terminal velocity. On second thought, 120 mph is probably closer to the truth.