It's really not solely a "Changed Product Rule" question - it's a basic compliance finding issue. When a change to a system causes the regulatory evaluator to have to re-examine compliance with a regulation that sets requirements that are applied at the system level, such as rules requiring a system safety analysis, a compliance finding can't be made if some other existing, unchanged part of the design makes the system non-compliant with the system level rule. You can run into these issues even when the certification basis hasn't changed.
Last edited by Dave Therhino; 20th Nov 2020 at 21:48.