Civil air regulations amendments. 4b-15. Airplane airworthiness, transport categories; 40-48, Scheduled interstate air carrier certification and operation rules; 41-13, Certification and operation rules for certificated route air carriers engaging in overseas and foreign air transportation and air transportation within Hawaii and Alaska; 42-12, Aircraft certification and operation rules for supplemental air carriers, commercial operators using large aircraft, and certificated route air carriers engaging in charter flights or other special services; 91. General operating and flight rules (new); 514, Technical standard orders for aircraft materials, parts, processes, and appliances: Installation of cockpit voice recorders in large airplanes used by air carrier or commercial operator; effective Sept. 2, 1964.

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