Having followed this thread from early on in this tragic incident I have been aware of the numerous uses of the word reported
Reported engine fire
Reported explosion
Reported smoke from engine
and so on.....
Is it now time to install a high quality CCTV system which records each and every departure at major airports. Such unambiguous evidence would surely permit in some cases, the AAIB teams to reach important conclusions very quickly and set in motion remedial action to enhance safety.
For example if a component is seen detaching itself from the aircraft this will form an immediate and crucial part of the post incident investigation permitting structural checks on similiar aircraft to take place in days rather than months.....maybe avoiding more loss of life?