Home2020 Treaties and Agreements ...Qatar (20-827) – Air Transport Agreement hide Qatar (20-827) – Air Transport Agreement TIAS Office of Treaty Affairs August 27, 2020 Transportation: Aviation Transport Services With Annexes. Signed at Washington October 3, 2001; entered into force August 27, 2020. And Protocol of Amendment Signed at Washington July 10, 2020; entered into force August 27, 2020. Download Agreement [3 MB] Tags Air Transport Agreements Qatar Transportation Treaties