It was confirmed that about 10 North Korean Air Force aircraft approached the no-fly zone stipulated in the September 19 military agreement one after another from the West Sea and inland areas on the night of the 13th, and the Air Force South Korean replied.
The joint chiefs of staff said on the 14th: “Our military identified about 10 traces of North Korean military aircraft from about 10:30 pm on the 13th to about 12:20 am on the 14th and have taken countermeasures.”
The Joint Chiefs of Staff is located in the interior area southwest of the Tactical Measure Line by North Korean military aircraft 5 km north of the no-fly zone (25 km north of the military demarcation line) established according to the military agreement of 19 September, and 7 km north of the no-fly zone (47 km north of the military demarcation line) in the eastern hinterland. In the West Sea area, it was explained that it approached 12km north of the Northern Limit Line (NLL) and then went north.
As a result, the Air Force carried out an emergency sortie of the air forces, including F-35A stealth fighters, to perform a response maneuver and, in addition, the Air Force maintained a full response position through the forces of Follow-up support and air defense artillery forces, the joint chiefs of staff said.
The tactical course of action refers to a place where the ROK army has drawn an imaginary line north of the military demarcation line (MDL) and has determined that it must respond immediately if it is discovered that the North Korean Air Force has reached this line. This is because the fighters are fast and if you don’t act early, you will be late.
Although the North Korean Air Force is quite backward, it was quite rare to send fighters south to demonstrate by force. On 6 and 8 October a squadron of fighters was sent to a military demonstration, but even then the line of tactical action was not crossed. In particular, it is rare to approach the no-fly zone envisaged by the military agreement of 19 September 2018.