The cable was threaded into a turnbuckle of some kind, but the safety wire was never inserted. They found it after the crash with no wire and no soot marks indicating a wire had been there. I can't attest that this was a valid finding of the root cause, but I'm not at this point questioning it.
As I went through the simulator runs I was increasingly questioning the crew's response. That's an uncomfortable feeling. It seems to me that faster left rudder would have gotten them out of it. I'm still pondering this. The next release will have a lot of material about simulating the flight.
When the CAB was folded into the FAA, all the CAB files went to the National Archives. The Archives verified this, and did a search for all records on this crash. They said there was nothing but the final report. I'm not averse to filing legal motions as needed ...