We are certified as and ISO 9001 and AS9100 company and have hundreds of active part numbers most of which are not used in the Aviation, Space, and Defense industries. If a part number is not used in the Aviation, Space, or Defense industries is it required to meet the AS standard?
The answer to this comes down to how you have defined the scope of your quality management system (QMS). If you have stated your scope in such a way that all of the QMS rules apply to every product then you will need to apply all rules to everything. If, however, you defined your scope to allow certain products to have ISO 9001 polices applied, with the additional aerospace requirements of AS9100 applied to only certain products or parts of the company, then you can separate what is applied where.
For instance, I have seen a company that had three assembly lines, two of which made automotive parts and were certified to IATF16949 and the final one which made other parts which was certified to ISO 9001. For this final assembly line the additional au tomotive requirements did not apply.