Engines, Tuc, Wensleydale et al,
Many thanks for such an informative (if depressing) review. I have two questions (or had, It's Life Jim 208 has asked the one about "When?").
The second is what is the level of assurance required? I don't suppose that a 1964 KC-135 is as inherently safe as a 2013 built A330 Voyager - if only because of the FBW protection in the Airbus. So how do you get to a place where something like the RJs can get certified? How much assurance is "enough"?
Thanks in advance,
S41