The executive director is authorized to revoke or suspend temporarily or permanently the right to operate aircraft, when the executive director determines that any aircraft is not airworthy, or that any airman is not qualified, has wilfully violated the provisions of this chapter or the regulations prescribed pursuant thereto or any other statute of this state relating to aeronautics, or any Act of Congress relating to aeronautics, or any rule or regulation promulgated pursuant thereto, or the statutes or rules or regulations of another state relating to aeronautics, is addicted to the use of narcotics or any other habit-forming drug or to the excessive use of intoxicating liquor, has made any false statement in any application for registration of a federal license certificate or permit or has been guilty of other conduct, acts or practices dangerous to the public safety and the safety of those engaged in aeronautics.