On the 30th, the Seoul Metropolitan Government sent a safety alert text message notifying residents that aircraft noise may occur in the Gangnam-gu and Songpa-gu areas from 10:00 a.m. to around 4:30 p.m. that day.

Through the text message, the Seoul Metropolitan Government stated, "Flight noise may occur in the Gangnam-gu and Songpa-gu areas from 10:00 a.m. to around 4:30 p.m. today due to flights related to the Space Challenge event (hosted by the Air Force)."

This noise is caused by aircraft flight activities for the "Space Challenge" event hosted by the Air Force and is unrelated to a disaster or accident. The Seoul Metropolitan Government asked residents to take note of the information, as temporary loud noises from passing aircraft may be heard in Gangnam-gu, Songpa-gu, and nearby areas during the specified time frame.