/ Courtesy of Daum

By Lee Ji-hye



Passenger planes circled above Incheon International Airport in a holding pattern, Thursday, to avoid disturbing students on the ground taking a make-or-break college entrance exam.



A captured screen of the inbound flights coming towards Korea's international airport has gone viral online, showing the planes flight paths as they circled the airport to bide their time.



High school seniors on Thursday took the College Scholastic Aptitude Test (CSAT). The planes were delayed around the time the English listening section of the exam was held.



Yoo Chang-sun of the Seoul Regional Aviation Administration Control Planning Department confirmed that the planes' landings were delayed.



"The screen capture reflects what we did today," Yoo told The Korea Times. "We put all of the landing airplanes on hold at a height that does not make problematic noises for test-takers from 1:05 p.m. to 1:40 p.m."



It was confirmed by Incheon International Airport that air traffic controllers gave orders to fly three kilometers above ground.