Having work in and implemented Commercial, Military, Medical Device, Aero-Defense integrated QMS throughout the years you should run you QMS just one way. Develop the systems so it addresses the most stringent requirements from each of the three. Yes some customer won’t need all the bells and whistles but then again it will be easier to run for your organization.When Organizations achieve multiple certifications, ISO9001 / IATF16949 / AS9100. Is there an order of precedence? or does rely on individual customer requirements?