The pie charts below show the different reasons for flight delays in a particular Asian country in 2015 and 2016. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The pie charts illustrate the proportion of five various reasons that caused flight delays in one Asian country in the years 2015 and 2016.

Overall

, operations management of airlines has the highest percentage in both years,

while

the least happened reason was airport security in 2015 and military factors in the

next

year. In 2015, the operation management process was the reason for more than two-fifth of delayed cases,

while

air traffic control affected 25 per cent and bad weather was 4 per cent less than traffic control.

Whereas

the military effect impacted 10 per cent and the security of the airport affected just only 4%. Moving to flight delays in 2016, the most impact cause was still operation management at 46% (6% more than

last

year),

however

, bad weather was the

second

most

effect

Replace the word

effective

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reason with 23% and the

third

one was airport security at 13%.

Although

air traffic control's figure dropped by more than half to 12% it was still not the least factor, soldier impact was lowest among causes with only 6%.