SDCL § 21-63-12: Evidence of advancements, changes, or subsequent measures.

In an aviation product liability claim, the following evidence is not admissible for any purpose:

(1) Evidence of any advancements or changes in technical or other knowledge or techniques; in design theory or philosophy; in manufacturing or testing knowledge; in techniques or processes in labeling; or warning of risks or hazards; or, in instructions for the use of the aviation product, if the advancements or changes have been made, learned, or placed into common use subsequent to the time the aviation product in issue was designed, formulated, tested, manufactured, or sold by the manufacturer; and

(2) Evidence of any changes made in the designing, planning, formulating, testing, preparing, manufacturing, packaging, warning, labeling, or instructing for use of, or with regard to, the aviation product in issue, or any similar product, which any change was made subsequent to the time the aviation product in issue was designed, formulated, tested, manufactured, or sold by the manufacturer.

This section does not require the exclusion of evidence of a subsequent measure if offered to impeach a witness for the manufacturer or seller of an aviation product who has expressly denied the feasibility of such a measure.