South Dakota Codified Laws
Chapter 63 - Aviation Product Liability
Section 21-63-8 - Product in compliance with mandatory government contract specification.

21-63-8. Product in compliance with mandatory government contract specification.
If the injury-causing aspect of the aviation product was, at the time of manufacture, in compliance with a mandatory government contract specification relating to design, this is an absolute defense and the aviation product is deemed not defective for that reason. If the specification related to warnings or instructions, the aviation product is deemed not defective for that reason.

Source: SL 2011, ch 113, ยง8.