PLA Sorties Fall to 5, but All 5 Cross the Median Line as Ship Presence Grows to 17

Taiwan's Ministry of National Defense detected 5 PLA aircraft sorties, 11 PLAN vessels and 6 official ships operating around Taiwan in the 24 hours to 6 a.m. (UTC+8) September 20, 2026; all 5 sorties crossed the Taiwan Strait median line, entering the central, southwestern and eastern ADIZ sectors. Taiwan's armed forces responded with CAP aircraft, navy ships and coastal missile systems. The sortie count fell sharply from the Sept 16-18 Jioupeng-drill surge (peaking at 28 sorties, 24 crossing, on Sept 18) back toward the low end of the window, but the 17 total PLAN and official vessels is the highest ship count recorded since the Sept 7 surge, and every sortie detected crossed the median line — underscoring that gray-zone pressure has shifted from aircraft volume toward a sustained naval and coast-guard presence.