JP
nor is it necessary to know in great detail exactly what happened as the aircraft flew towards the Mull (for example, what did the two pilots say to each other? does it matter?
Well, it may do. It may not. But we shall never know, shall we, because data/voice recorders were never fitted, although they had been recommended years before.
But in your world, (and that of cazatou K52) where the rules in place at the time; of satisfying the standard of 'absolutely no doubt whatsoever', were just an inconvenience, which could simply be 'down graded'...
Where 'models' can be read as fact. Where 'absence of evidence' may be taken as 'evidence of absence'. Where lack of relevant disclosure is endemic. Where only a small proportion of the aircraft remains. Where there are no survivors testimonies. No 'eye' witnesses. No recordings of any kind.
Of course it wouldn't matter. Would it?