To: 747FOCAL
Not to be evasive, but if you read the FARs, aircraft that share the same Type Certificate, do not have to meat the latest ammendments in some cases. The rules were designed that way to help the manufacturers save money as well as the FAA on bookkeeping.
I worked on the certification of the Canadair CL 604 and Bombardier tried to grandfather it for certification on the basis of three previous designs. The 604 was a more advanced design and the Canadian certification authorities refused Bombardier and made them completely redo all of the certification documents including the reliability assessment, the FMECA and the safety hazards analyses.
I also worked on the A-310 and the A-320 and in order to gain Canadian certification the FMECAs and the safety hazards analyses had to go to the smallest part in a component. I may be wrong and quite often I am but I would assume that the Canadians would require that certification not be granted on the basis of similar design and that Boeing would have to redo the documents for the previous designs.
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