S.D. Codified Laws § 38-21-20
If the secretary finds the applicant qualified to apply pesticides in the classifications for which the applicant applied, after such examinations as the secretary shall require by regulation, and if the applicant applying for a license to engage in aerial application of pesticides has met all the requirements of the Federal Aviation Agency, the Aeronautics Commission of this state, and any other applicable federal or state laws or regulations to operate the equipment described in the application, the secretary shall issue an applicator's license limited to the classifications for which the applicant is qualified. The secretary may deny any application for any applicator's license if the secretary finds that the applicant has violated any provisions of this chapter.
SDCL 38-21-20