More research into fuel reserve policy needs to be done if airlines are to achieve the finest balance between payload and safety. Progress is required in the accuracy of weather forecasting, in streamlining the techniques associated with the choice of required fuel reserves, and in research into the greater benefits that could be derived from well-developed operational control policies, exploiting to the full the enormous potentialities of a system-wide communications network. Captain Moline has suggested some of the inadequacies of present-day techniques.