Design in AS9100 Rev D

Answer:
This is one example that I have used where a company that supplies products also has a service that they provide to customers. Even if you do not design the product, you certainly design the service of creating a drawing. If this is a new service that you are offering it would need to be designed as per the AS9100 Rev D requirements for design and development. As for your question on customer approval, this is a decision that is part of your customer requirements, not the AS9100 standard. If your customer states that they need approval over any documents you create to manufacture their parts then you would certainly need approval over the drawing.
For more information on how the design and development requirements apply in AS9100 see this article, “Can companies still exclude design and development from their AS9100 Rev D QMS?“; https://advisera.com/9100academy/blog/2017/10/09/can-companies-still-exclude-design-and-development-from-their-as9100-rev-d-qms/