It was an awesome jump. He knew the plane. DB commanded the ship's crew to put the flaps down and slow the plane down to something like 120 mph at just 10000 feet. Then he jumps down into clouds at night with zero visibility of the ground....wearing nothng but loafers and a trench coat. He had a parachute of course, but no helmet. On top of all of that, the windchill in the atmosphere at that speed was supposedly something like -70F.

Of course when he jumped, the crew was up front in the cockpit and never saw him actually leap out of the plane. That's why no one knows exactly where DB jumped....or landed. If the crew was in on it, he might have had a helmet smuggled on board by one of them to increase his chances of success. The fact that the crew never saw him jump and had no idea where he jumped lends more circumstantial evidence to the theory that DB had accomplices on board.

I think he made it.