(a) It shall be the duty of every common carrier by aircraft to provide and furnish intrastate transportation, as authorized by its certificate, upon reasonable request to have and to provide reasonable through intrastate service in such transportation in connection with other such carriers or with common carriers by railroad, motor vehicles, express or water; to provide adequate and reasonable service, equipment, facilities, waiting rooms and rest rooms, in connection with such transportation; to establish, observe and enforce just and reasonable individual and joint rates, fares and charges and just and reasonable classifications, rules, regulations and practices relating to such transportation; and in case of such joint rates, fares and charges, to establish just, reasonable and equitable divisions thereof as between common carriers by aircraft participating therein which shall not unduly prefer or prejudice any participating carrier.

(b) No common carrier by aircraft shall make any or consider any undue or unreasonable preference or advantage to any particular person, port, locality or description of traffic in any respect whatsoever or subject any person, port, locality or description of traffic to any unjust discrimination or any undue or unreasonable prejudice or disadvantage in any respect whatsoever.

(c) Nothing in this chapter shall prohibit a common carrier by aircraft from extending credit, for such reasonable periods and subject to reasonable terms and conditions as the commission may by reasonable regulations prescribe, to such persons as, in the judgment of such carrier, may appear to be proper credit risks.

(d) It shall be the duty of every contract carrier by aircraft to establish, observe and enforce reasonable minimum rates, fares and charges for any service in intrastate commerce rendered by it as a contract carrier and not so low as to be incompatible with the public interest, and to establish, observe and enforce reasonable classifications, rules, regulations and practices related to such commerce. A contract carrier by aircraft may transport property in intrastate commerce only under individual written contracts or agreements.

(e)(1) Whenever, after notice and opportunity for hearing, upon complaint or upon its own initiative, the commission shall be of the opinion that any individual or a joint rate, fare or charge demanded, charged, collected or received by any common carrier by aircraft for intrastate transportation or any classification, rule, regulation or practice affecting such rate, fare or charge, or the value of the service thereunder, is or will be unjust or unreasonable, or unjustly discriminatory or unduly preferential or unduly prejudicial, the commission shall determine and prescribe the lawful rate, fare or charge (or the maximum or minimum or the maximum and the minimum thereof) thereafter to be demanded, charged, collected or received or the lawful classification, rule, regulation or practice thereafter to be made effective.

(2) Whenever, after notice and opportunity for hearing, upon complaint or upon its own initiative, the commission shall be of the opinion that any minimum rate, fare or charge of any contract carrier by aircraft for intrastate transportation or any classification, rule, regulation or practice affecting such rate, fare or charge, or the value of the service thereunder, is or will be in violation of this chapter, the commission shall determine and prescribe the lawful minimum rate, fare or charge thereafter to be demanded, charged, collected or received or the lawful classification, rule, regulation or practice thereafter to be made effective by such contract carrier.

(f) In any proceeding to determine the justness or reasonableness of any rate, fare or charge of any air carrier, there shall not be taken into consideration or allowed as evidence or elements of value of the property of such carrier, either good will, earning power or the certificate under which such carrier is operating; and, in applying for and receiving a certificate under this chapter, any such carrier shall be deemed to have agreed to the provisions of this subsection on its own behalf and on behalf of all transferees and lessees of such certificate.

(g) (1) Whenever any air carrier shall file with the commission a tariff stating a new individual or joint rate, fare or charge for intrastate transportation, or any classification, rule, regulation or practice affecting such rate, fare or charge, or the value of the service thereunder, the commission is empowered, upon complaint or upon its own initiative, at once, and, if it so orders, without answer or other formal pleading by the air carrier, but only upon reasonable notice, to enter upon investigation concerning the lawfulness of such rate, fare or charge of such classification, rule, regulation or practice; and pending such investigation and the decision thereon, the commission, by filing with such tariff and delivering to the air carrier affected thereby a statement in writing of its reasons for such suspension, may suspend the operation of such tariff and defer the use of such rate, fare or charge or such classification, rule, regulation or practice for a period of not more than 90 days, and, if the proceeding has not been concluded and a final order made within such period, the commission may, from time to time, extend the period of suspension, but not for a longer period in the aggregate than 180 days beyond the time when such tariff would otherwise go into effect; and, before or after the rate, fare, charge, classification, rule, regulation or practice goes into effect, the commission, after reasonable opportunity for hearing, may make such order with reference thereto as would be proper in a proceeding instituted if such rate, fare, charge, classification, rule, regulation or practice had become effective. If the proceeding has not been concluded and an order made within the period of suspension, the proposed rate, fare, charge, classification, rule, regulation or practice shall go into effect at the end of such period; provided, that this subsection shall not apply to any initial tariff filed by any air carrier.

(2) At any hearing involving any change in any tariff, classification, rule, regulation or practice of a common carrier by aircraft, the effect of which is to increase any rate, fare or charge thereof charged, or to decrease the value of the service thereunder, the burden of proof to show that the changed tariff, classification, rule, regulation or practice is a just and reasonable charge is upon such common carrier.

(h) Whenever, after notice and reasonable opportunity for hearing, upon complaint or upon its own initiative, the commission is of the opinion that the divisions of joint rates, fares or charges for intrastate transportation are, or will be, unjust, unreasonable, inequitable or unduly preferential or prejudicial as between the common carriers by aircraft thereto, the commission shall prescribe the just, reasonable and equitable divisions thereof to be received by such common carriers. The commission may require the adjustment of divisions between such common carriers from the date of filing the complaint or entry of order of investigation or such other date subsequent thereto as the commission finds to be just, reasonable and equitable.

(i) The commission shall, whenever required by the public convenience and necessity, after notice and hearing, upon complaint or upon its own initiative, establish through service and joint rates, fares or charges (or the maximum or minimum or the maximum and minimum thereof) for intrastate air transportation by common carriers by aircraft, or the classifications, rules, regulations or practices affecting such rates, fares or charges, or the value of the service thereunder, and the terms and conditions under which such through service shall be operated.

(j) No common carrier by aircraft shall charge or receive any greater compensation in the aggregate for the carriage of persons or of a like kind of property for a shorter distance than for a longer distance over the same route and in the same direction within this state, the shorter being included within the longer distance, or shall charge any greater compensation as a through fare or rate than the aggregate of the intermediate fares or rates; but this shall not be construed as authorizing any such carrier to charge or receive as great a compensation for a shorter as for a longer distance. Upon application to the commission, such carrier may, in special cases after investigation, be authorized by the commission to charge less for a longer than for a shorter distance for the carriage of persons or property, and the commission may, from time to time, prescribe the extent to which such carrier may be relieved from the operation and requirements of this section.

(k) Common carriers by aircraft shall publish, post and file with the commission, in accordance with general or special regulations prescribed by the commission, time tables showing the time of arrival and departure of regularly scheduled aircraft engaged in intrastate commerce.

(l) Whenever the commission, upon its own motion or upon complaint, after reasonable opportunity for hearing, shall find that any common carrier by aircraft does not operate a sufficient number of aircraft to reasonably accommodate the traffic passengers or freight transported by or offered for transportation to it, does not operate its aircraft with sufficient frequency or at reasonable or proper time, does not stop the same at proper places, does not operate its aircraft upon a reasonable time schedule for the run or does not maintain its time schedule with reasonable regularity, the commission shall have power to make any order or orders that the commission may determine to be reasonably necessary to correct such deficiency or inadequacy; provided, that no such order shall require such carrier to violate any provision of the Act of Congress entitled "The Civil Aeronautics Act of 1938," approved June 23, 1938, and the acts amendatory thereof and supplementary thereto, or the lawful rules, regulations and orders of the Civil Aeronautics Board or other administrative agency of the federal government charged with the duty of administering said act; and further provided, that no order or orders of the commission shall deprive any carrier by aircraft of anything of value without first having given such carrier by aircraft an adequate and reasonable opportunity to be heard.