What role did the International Commission for Aerial Navigation play after the Paris Convention of 1919?

The International Commission for Aerial Navigation (ICAN), also known as CINA, was established following the 1919 Paris Convention to oversee international aviation regulations.1

Its primary roles included:

• Regulatory Development: ICAN served as the central body for managing the international standards set by the Paris Convention.1
• Air Traffic Control: In 1922, under the direction of the League of Nations, ICAN made the first attempts to develop systematic air traffic control rules to address the growing needs of international aviation.2

ICAN continued its work until it was eventually superseded by the International Civil Aviation Organization (ICAO), which was established under the 1944 Chicago Convention.1