Pub. L. 84-639, tit. VI, sec. 616

Sec. 616. Notwithstanding any other provision of law, executive order, or regulation, no part of the appropriations in this Act shall be available for any expenses of operating aircraft under the jurisdiction of the Armed Forces for the purpose of proficiency flying except in accordance with the regulations issued by the Secretaries of the Departments concerned and approved by the Secretary of Defense which shall establish proficiency standards and maximum and minimum flying hours for this purpose: Provided, That without regard to any provision of law or executive order prescribing minimum flight requirements, such regulations may provide for the payment of flight pay at the rates prescribed in section 204 (b) of the Career Compensation Act of 1949 (63 Stat. 802) to certain members of the Armed Forces otherwise entitled to receive flight pay during the fiscal years 1956 and 1957 (1) who have held aeronautical ratings or designations for not less than twenty years, or (2) whose particular assignment outside the United States makes it impractical to participate in regular aerial flights.