The given pie charts are broken down into 6 distinct categories and each image gives the information for causes of postponed flights in a specific Asian nation in two consecutive years, starting in 2015.
Overall, it is clear that the reason for airline and operations management share made up the highest rate of total in both years, whereas that of airport security and military factors indexes remained the least elements during the same time frame.
Looking at the first graph, exactly two fifths was seen in the airline operations management share, comprising the largest share of total reason, which was twofold higher than that of the bad weather index. Besides, the cause for air traffic control also recorded a significant portion at exactly a quarter, and became the second biggest percentage for flights delayed. It is worthy noting that less than 15% was accounted for the airport security and military factors shares ( 4% and 10% respectively).
In terms of the last chart, airline operations management was still the reason that was dominated for the postponed flights reasons and even grew to approximately a half in the final year. Furthermore, after witnessing a dramatic decrease of roughly a tenth, the air traffic control’s rank was replaced by the bad weather figure, then became the third position in causing delayed flights. In addition, a sharp rise of 10% went to the airport security share, whereas that intake of military factors one saw the opposite trend to 6%.