Starting to get Involved
So you are looking for a Production Certificate like the OEM have? That involves a lot of requirements in dealing with the FAA. I am not an expert in that. But, I do recommend you contact your local MIDO and ask them. They would know all of the requirements needed of a Production Certificate.
Ie. does the FAA govern the requirements for these tier 1 & 2 manufacturers or is the OEM solely responsible for governing these tier 1 & 2 manufacturers?