Korea Communications Commission confirmed that the GPS jamming signals have been coming from a city on North Korea side of the border. “We’ve traced the jamming signals to the direction of Kaesong,” a commission deputy director told Springhill Group.
According to the transport agency, planes that suffered from GPS signal jamming were instructed to use the alternative navigation systems and were not delayed in their schedules. The signal jamming appears to be focused on air traffic at Gimpo and Incheon airports, both of which are around 30 miles from the border.
Source: springhillgroup national news