You are talking about type certification which is a different certification/process way prior to this. This is talking about 'certificate of airworthiness' for

You are talking about type certification which is a different certification/process way prior to this. This is talking about 'certificate of airworthiness' for a specific tail number. This is confirmation that the aircraft/tail number was built to type design. It has nothing to do with defining/certifying type design. The FAA cert of airworthiness just confirms that this tail number was build exactly to type design, or, if required, anything that didn't went through non-conformance (say someone accidentally drilled a hole in the wrong spot and engineers had to decide if that compromised type design, mitigate it if needed, document it, and include documentation on all that with the tail number). There is no malice here this position/certification doesn't do what you seem to think it does. You salary concern is wrong too. Aviation is a small world. The QA person has to be approved by the FAA to have a job. Boeing can threaten a paycheck, the FAA a career. Boeing is also Union in Seattle. But again you should not be asking questions at this level just confirming the tail number was manufactured exactly to type design. You should be doing type design checks, that were approved as part of the type design process, and signed off and approved by the FAA. If the system requires someone to be an aerospace engineer level asking smart question during this phase, the entire FAA system failed and it wouldn't matter if FAA was on site or not. This is 1-2 filing cabinets worth of documentation that checks were performed and everything conformed to type. Documenting/verifying every part's serialized number in case of grounding/recall. That assemblies were assembled in the type design specified order, not the faster way Bob on the floor came up with (I think this was the problem with the doors, contractors not doing to type design and type design not requiring auditing in a way that caught that). Stuff like that.