South Dakota Codified Laws
Chapter 10 - Amusement Rides
Section 42-10-7 - Inspection following modification.

42-10-7. Inspection following modification.
No person may operate an amusement ride that has been modified or altered in a manner that changes the dynamics or control system from the manufacturer's design or specification since the most recent annual inspection, unless the amusement ride passes an inspection by a certified amusement ride inspector prior to operation.

Source: SL 2014, ch 208, ยง6.