At 1:30 p.m. on the 13th. On the aircraft tracking platform "ADSBexchange," planes were circling around Okcheon County, North Chungcheong Province. At the same time, Incheon International Airport was crowded with planes preparing to take off. They began taking off one after another starting around 1:50 p.m.
All aircraft takeoffs and landings were fully restricted to align with the English listening section of the 2026 College Scholastic Ability Test (CSAT). Including the five minutes before and after the English listening test, the restriction continued for 35 minutes from 1:05 p.m. to 1:40 p.m.
Only emergency or urgent aircraft were allowed to take off, and planes already in flight had to hold at altitudes above 3 km. Drones were no exception.
The military also halted aircraft and helicopter takeoffs and landings during this time. Military training such as live-fire exercises that could cause noise, and troop movements, also had to be refrained from.
Police also stepped in. On this day, police deployed 10,475 personnel including traffic officers and 2,238 patrol cars around CSAT test sites, and directed noise-generating vehicles such as automobiles to detour away from the sites.