As part of the requirements for approval of an Air Operator Certificate (AOC), the National Aviation Authority (National Aviation Authority (NAA)) will specify the required contents of the Company Operations Manual. These requirements may be embodied within the Regulations published by the National Authority or they may be set out in a separate publication such as UK CAA publication CAP 789 - Requirements and Guidance Material for Operators. In either case, a critical aspect of of the guidance provided concerns the requirement to publish the specific tenets of the Company fuel policies within the Operations Manual.