Continuing its eighth session, which opened on September 6, 1949, the Council on September 23 noted that no part of Annex 8 of the Chicago Convention (Airworthiness of Aircraft) had been disapproved by a majority of the contracting states and accordingly declared the Annex operative as of September 1, 1949. On November 16, the Council adopted amendments to Annex 4 (Aeronautical Charts) and established September 1, 1950, as the date for implementation of the amendments, permitting contracting states to register disapproval until June 1, 1950. With regard to the Chicago Convention itself, the Council decided that it would 1) recommend no amendments to the 1950 Assembly, 2) recommend that the 1950 Assembly adopt no amendments to the Convention, and 3) proceed to study the whole problem of amendments with a view to reporting to the 1950 Assembly on principles, methods and procedures for amendment. The Council, in the course of its eighth session, approved the recommendations of the Air Navigation Commission on the Final Report of the Technical Committee of the 2nd Conference on ICAO North Atlantic Ocean Stations and on the recommendations of the North Pacific Regional Air Navigation Meeting Relating to Ocean Stations. Before concluding the session on December 13, the Council took the following action: 1) allocated to Belgium the contributions of Ireland and Portugal toward the North Atlantic ocean stations for the fiscal year 1949; authorized the Secretariat to proceed with the preparation and publication of a lexicon of aeronautical terms including definitions contained in the Convention, Assembly resolution and Annexes, terms for which trilingual equivalents had been prepared together with definitions for such terms, and terms considered by the Secretariat to be necessary to make the lexicon reasonably complete;