Aircraft Flight Operation Regulations Article 278

An operator shall ensure that, before commencing a flight, each flight crew member assigned to duty holds and carries with him/her a valid license which is issued by CAA and appropriate to the type of operations.The pilot-in-command (PIC) of an aircraft equipped with an airborne collision avoidance system (ACAS II) shall ensure that each flight crew member has been appropriately trained to competency in the use of ACAS II equipment and the avoidance of collisions.When a medical certificate can be obtained only with correcting lenses, the applicant may be assessed as fit provided that such correcting lenses are worn during the exercise of the privileges of the license or rating applied for or held; and, in addition, a pair of suitable correcting spectacles is kept readily available during the exercise of the privileges of the applicant’s license.Flight crew members shall wear a company uniform for duty and have a flashlight available and readily accessible for use.