I would recommend not to include any of the design information on the U-2. It is required in UG-120 to include any and all design function performed by the U-2 Certificate Holder. If no design was performed, to me, it is a contradiction to include any design information. It has often been found that in design information if included on the U-2 will not match the design information in the U-1/U-1A. At the very least the U-2 will have to be returned for correction of a more serious issue if the information will not satisfy the design parameters of the U-1/U-1A. There is nothing in the Code that prohibits the information to be included, just a bad idea.
The mfr is response sible for the complete item. I don't think you can avoid the certification part.you can add in remarks, that you did not designed certain parts or name the designer's company.
