The director may revoke the certificate of an operator, upon recommendation of the board, when any of the following are found:
- (1) The operator has practiced fraud or deception in obtaining the certificate.
- (2) The operator in the performance of his or her duties did not use reasonable care, judgment, or the application of his or her knowledge or ability.
- (3) The operator is incompetent or unable to properly perform his or her duties as an operator.
- (4) The operator has failed to maintain certification requirements.
(Acts 1971, No. 1594, p. 2728, §12; Acts 1993, No. 93-621, p. 1036, §1.)