Artricle 24 and 29 of Air Operalor Ordonance 1939 and article 17 and 18 of Warsawa Convention 1929 follow air operator principle of presumption of liability. The provision mentioned above give more attention to protection of air operator rather than passenger and does not regulate air opera for liabilty against third party injury. In recent development, the Act No. I5 of 1992 on Flight has adopted absolute liability principle and presumption of liability principle is no Ionger can he maintained as well as the principle of air operator liabiliy on injury that is faced by third party is no relevant anywhere. The Wama Convention of 1929 has been amanded and it adopts absolute liability principle as effort to provide more protection to passenger and third party.