| 21 June 1948 |
|
Convention on the Privileges and Immunities of the Specialized Agencies of the United Nations adopted by the General Assembly of the United Nations on November 21, 1947 [Annex III - International Civil Aviation Organisation] |
| 9 May 1949 |
|
I.C.A.O Conference on Air Navigation Services : Greece |
| 12 May 1949 |
|
I.C.A.O. Conference on Air Navigation Services : Greenland and Faroe Islands |
| 12 May 1949 |
|
Final Act and Annex to the Second Conference on ICAO North Atlantic Ocean Weather Stations |