Case · explicacion_oficial
Blue House UFO incident (Seoul, 1976)
On the evening of October 14, 1976, Seoul's anti-aircraft batteries opened fire — thousands of rounds, in at least three volleys — at unidentified lights advancing toward the Blue House (the presidential residence, a strict no-fly zone). Falling shrapnel over the city killed 1 person and injured 31; the Seoul government covered the medical costs.
What is claimedWitnesses described 10–12 lights in wing formation arriving from the west, which vanished after the volleys. For Korean ufology it is the country's most serious military case: something overflew Seoul's most defended airspace unscathed under massive fire.
Skeptical viewThe official explanation: a Northwest Boeing 707 cargo flight (flight 902) strayed into the restricted zone. Loose ends noted by Koreans themselves remain — the plane landed in Japan intact, never reporting being fired upon, and no emergency meeting is on record — but there is no physical evidence of anything anomalous.
Sources — here nothing is invented: NamuWiki (서울 UFO 격추미수 사건) · LA Seoulite — UFO Incidents in Korea