O-D / CJ
The reasons given for the revisions to the regulations ,incuding upgrading the standard of proof, for BOI's for accidents in which the crew died are also valid reasons for reviewing other relevant accidents when negligence/blame was attributed ; summarised in the Philip report as to meet '' generally accepted standards of justice and fairness''.
Regarding the Valiant crash in August 1960 surely the evidence of the widespread cracks in the wingspars ,which was exposed by the comprehensive inspections of the Valiant fleet in 1964,(leading to the withdrawal from service of the entire fleet in Jan.1965,) together with the writings of Morgan,Jones and Brookes is compelling?