The eleventh session of the International Civil Aviation Organization (ICAO) Assembly met in Montreal from May 20 to June 2, 1958. Represented at the meeting were 52 contracting states; two non-contracting states (the Soviet Union and Yugoslavia) sent observers, as did the UN, the International Labor Organization, and the International Air Transport Association. After statements by various delegations, the President of the ICAO Council reviewed the activities of the organization since the last Assembly meeting in 1956. He stated that the intervening period had been one of great activity in ICAO centering around preparations in all fields for the advent of turbine-powered aircraft. A specially created Jet Operations Requirements Panel had studied the requirements of the new long-range jet aircraft, and a Special Implementation Panel had been created by the Council. A preliminary study of the economic implications of long-range aircraft had been prepared by the Air Transport Committee and was being submitted to the Council. He stressed that while special attention was being given to the coming operations of jet aircraft, this emphasis should not cause the organization to disregard the continuous growth of aviation during 1956 and 1957. The technical assistance activity of ICAO had continued, during the period under review, to give important support to implementation through the assignment of experts and technicians and the training of students in countries where there were technical assistance missions, as also by granting fellowships and scholarships for study abroad.