Aircraft Flight Operation Regulations Article 137

An operator shall establish, for the electronic navigation data products that have been processed for application in the air and on the ground, procedures for ensuring that the process applied and the products delivered have met acceptable standards of integrity and that the products are compatible with the intended function of the equipment that will use them; such electronic navigation data products shall not be used without being approved by CAA.An operator shall implement procedures that ensure the timely distribution and insertion of current and unaltered electronic navigation data to all aircraft that require it.