A mysterious US military plane arrived near Taiwan and declared its right to navigate international airspace in the 30 minutes ending at 3:45 a.m. UTC on December 29, 2025, with no transponder signal activated, according to a post by Taiwan's Air Defense Identification Zone (@adiz_tw) on X. The detection occurs amid China's ongoing "Justice Mission 2025" military drills around Taiwan, as announced by Senior Colonel Shi Yi of the PLA Eastern Theater Command earlier on December 29, per prior reports from ChinaMilBugle on X. Taiwan's Ministry of National Defense maintains an emergency response center established at 2:45 a.m. UTC in response to the drills, according to FaytuksNetwork on X. The plane's unannounced approach with transponder off, repeated as "No signal on!" three times in the @adiz_tw post, follows Chinese state media releases of posters like "Plainly Visible" featuring Taiwanese military imagery, as reported by TaiwanMonitor on X up to 3:15 a.m. UTC.
