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Analysis of vertical flight efficiency in European countries with extended intuitionistic fuzzy TOPSIS method

Published Online:pp 60-75

Flight efficiency is an important policy design criterion in air traffic management systems. The efficiency of flight operations becomes an important factor in identifying bottlenecks and restrictions imposed by air traffic management on the flight trajectories preferred by the airspace user. In particular, measures for fuel-efficient operations are of great interest. In this study, the vertical efficiency criteria and performances of flights in European countries are examined with the extended intuitionistic fuzzy TOPSIS method. In light of the data presented by EUROCONTROL, the weights of the vertical efficiency evaluation criteria according to their importance levels were calculated. Vertical efficiency performance values of each country were measured. In addition, a comparison of the pre-and post-pandemic periods was made. According to the results of the study, the total CO2 delta resulting from the flight level in descending and climbing was determined as the most important criterion in the vertical efficiency evaluation. In the country ranking, Luxembourg has the highest value in vertical efficiency performance in air traffic management. It is expected that the results of the research will guide decision-makers in air traffic management and contribute to the gap in the literature.


vertical efficiency, intuitionistic fuzzy logic, aviation, multi-criteria decision-making, MCDM, EIFTOPSIS, continuous climb operation, CCO, continuous descent operation, CDO