Article 11 2.

Where the identity of the operating air carrier or carriers is not yet known at the time of reservation, the air carriage contractor shall ensure that the passenger is informed of the name or names of the air carrier or carriers that is or are likely to act as operating air carrier or carriers on the flight or flights concerned. In such case, the air carriage contractor shall ensure that the passenger is informed of the identity of the operating air carrier or carriers as soon as such identity is established.