Ah, thought I remember being told a story on one of my visits to Sebha, that linked the L1011s to the 727 crash.
As for the licence validations, I am not surprised that a CPL was validated for ATPL privileges. I worked in Libya for a brief period and I was given TRI/TRE privileges based solely on my history as a Line Training Captain, despite never having held a TRI/TRE previously. A colleague who was an F/O but held an ATPL, was given a Left Seat validation based solely on the fact he held an ATPL at the time. The LCAA validations were based on out UK licences.
Go further south in Africa and the validation stories just get even more colourful!
Based on what I have seen and heard, what is contained in the accident report does not surprise me.