SDCL § 50-12-13: Expiration of license and commercial use stamp.

The aircraft dealer's license as provided by § 50-12-3 expires on the thirty-first day of January of the second year next succeeding the calendar year in which it was issued. The commercial use stamps as provided by § 50-12-8 expire twenty-four months after they are issued, if a valid dealer's license is in effect. The commercial use stamp expires automatically if the aircraft dealer's license expires or the aircraft dealer no longer holds a valid aircraft dealer's license.