On 17 August 1923, the French government proposed the convening of a diplomatic conference In November 1923 for the purpose of concluding a convention relating to liability in international carriage by air.

The conference was formally deferred on two occasions due to reluctant behavior of the governments of various nations to act on such a short notice without the knowledge of the proposed convention.

Finally, between 27 October and 6 November, the first conference met in Paris to study the draft convention.

Between 1948 and 1951 it was further studied by a legal committee set up by the International Civil Aviation Organization (ICAO) and in 1952 a new draft was prepared to replace the convention.

The work done by the legal committee at the Ninth Session was presented to the International Conference on Air Law which was convened by the council of the ICAO and met at The Hague from 6 to 28 September 1955.

If one nation is a party to the Warsaw Convention and another to the Hague Protocol, neither state has an instrument in common and therefore there is no mutual international ground for litigation.

To be covered by air carriers, doctors should respond to the captain's call when it comes to assisting ill passengers.