(a) The commission is empowered to require annual reports from any air carrier covering any or all operations of business. The contents of such report, and the form thereof, shall conform as nearly as may be to that required of air carriers and air contractors by the Civil Aeronautics Board or other administrative agency of the federal government under the Act of Congress entitled "The Civil Aeronautics Act of 1938," approved June 23, 1938, and the acts amendatory thereof and supplementary thereto. The commission may also require monthly, periodical and special reports from any air carrier, may prescribe the manner and form in which such reports shall be made and require from any such carrier specific answers to any reasonable questions pertaining to intrastate transportation by aircraft within this state and the books, records, properties or operations in connection therewith upon which the commission may reasonably deem information to be necessary. Such annual, monthly, periodical and special reports and answers to questions shall be under oath whenever the commission so requires. The commission may also require any common or contract carrier to file with it a true copy of each or any contract, agreement, understanding or arrangement between such carrier and any other carrier or person in relation to any traffic affected by the provisions of this chapter.

(b) The commission shall prescribe the forms of any and all accounts, records and memoranda to be kept by common carriers by aircraft, including the accounts, records and memoranda of the movement of traffic, as well as of the receipts and expenditures of money and the length of time that such accounts, records and memoranda shall be preserved. The forms of accounts, records and memoranda prescribed by the commission, as provided above, shall conform, as nearly as may be, to those from time to time prescribed by the Civil Aeronautics Board or other administrative agency of the federal government under the Act of Congress entitled "The Civil Aeronautics Act of 1938," approved June 23, 1938, and the acts amendatory thereof and supplementary thereto.

(c) The commission shall at all reasonable times have access to all lands, buildings and equipment of any air carrier and to all accounts, records and memoranda, including all documents, papers and correspondence now or hereafter existing and kept or required to be kept by air carriers, and it may employ special agents or auditors who shall have authority under the orders of the commission to inspect and examine any and all such lands, buildings, equipment, accounts, records and memoranda.