Last Year doing HPL in my ATPL theory, I saw a grainy video of the Sioux City Crash and a lecture given by the brilliant Captain.
He put alot of their situation to luck.
Bad Luck for the initial incident, good luck as far as the approach, but bad luck just before landing, a surge on one of the engines just as they were about to touch down, causing a wingtip to hit the ground & cause the final accident.
The tape must be available out there, somewhere, for anyone to look at. It is worth it.
FB