Originally Posted by
EAP86
PDR at the time there was the concept of the "legacy safety case". Roughly speaking if a type already had an extant RTS and could demonstrate a satisfactory in-service safety record, the type was deemed to have a legacy safety case. It wasn't a bad idea as a starter for 10 but it probably contributed to the plethora of different approaches. Not necessarily what you want really...
EAP
Well indeed. If that does impinge on this case then it would probably be classified by safety engineering specialists as an "organisational accident".
PDR