The report raises more questions than it gives answers. Pretty inconclusive and much speculation due to total destruction and absence of cvr and fdr.
Report makes reference to systemic and clearly deliberate attempt by use of "engineering e mails" to avoid tech log entries and the consequent strictures of the MEL. It observes that as a consequence ( of the 197 e mails they saw) there were occasions when the aircraft had been operated with long standing defects, which if properly recorded, would have grounded it until rectification..........