Today's aircraft are not built to a Specification they are built to a contract. OK they start with a specification, but after all the PTs "we can't afford that" and the manufacturers "we don't want (can't) build that" and "our suppliers can only gives this" you end up with a contract for an aircraft that doesn't do what the customer wanted and doesn't meet 00-970 let alone Mil Specs. This is because it was built as a 'Civil Certified' design as that is seen as a quicker / cheaper route by the PT and the manufacturer who hasn't designed and built a military aircraft because they understand FAR 25 better than any Def Stan or Mil Specs.