Safeware: I undersatand.
It is just frustrating to constantly hear from MoD that Nimrod has a good safety record, and so it is fit to fly. To use their own definition of safety case in DEF STAN 00-56
A Safety case is a structured argument, supported by a body of evidence, that provides a compelling, comprehensible and valid case that a system is safe for a given application in a given environment
I know it has been said before but,
absence of evidence of risk is not the same as evidence of absence of risk
DV