Long time lurker of the forum, but this particular thread has struck a sad chord.
Just to alleviate the discussion on ADs, this aircraft was in full compliance as are all of the Atlas Air / Amazon aircraft.
I’ve been involved with this project for 3 years and have compiled the AD records for most of the Amazon aircraft, including this airframe.
Reference the splitting of the conversions between the Boeing BCF and the IAI SF, this occurred as IAI did not have approval for winglet aircraft.
A sad day and my heart goes out to the families, and the many good people at Atlas, RIP.