This chapter shall not apply to: (a) Any aircraft owned and operated by or leased to and subject to the sole control of the United States or any civil or military agency of the United States, or the District of Columbia, the Commonwealth of Puerto Rico, or any possession of the United States; (b) any aircraft owned and operated by or leased to and subject to the sole control of this or any other state or agency thereof or any political subdivision or municipality of this or any other state; (c) any aircraft owned and operated by or leased to and subject to the sole control of any foreign country or any civil or military agency thereof or any political subdivision or municipality thereof; (d) any aircraft owned or being operated by a public air carrier engaged principally in regularly scheduled interstate or foreign air transportation for hire under either a federal certificate of public convenience and necessity or under a letter of registration or exemption order issued by the Civil Aeronautics Board or its successor.