DateSortiesCrossings Cross RateTypeVessels Notes
Jun 13600%Manned aircraft10Activity: southwestern airspace (4 sorties)
Jun 12141393%Manned aircraft13Median line crossings: northern and southwestern airspace (13 sorties)
Jun 1111982%Manned aircraft9Median line crossings: northern and southwestern airspace (9 sorties)
Jun 1000No activity16
Jun 9100%Manned aircraft15Activity: southeastern airspace (1 sorties)
Jun 8200%Manned aircraft13Activity: eastern airspace (2 sorties)
Jun 7400%Manned aircraft16
Jun 62229%Manned aircraft10Median line crossings: central and southwestern airspace (2 sorties)
Jun 5700%Manned aircraft16Activity: southwestern airspace (5 sorties)
Jun 4322578%Manned aircraft15Median line crossings: northern, central, southwestern and eastern airspace (25 sorties)
Jun 3181478%Manned aircraft14Median line crossings: northern and southwestern airspace (14 sorties)
Jun 2700%Manned aircraft13Activity: southwestern airspace (7 sorties)
Jun 100No activity11
May 31100%Manned aircraft12
May 301616100%Manned aircraft11Median line crossings: northern, southwestern and eastern airspace (16 sorties)
May 291010100%Manned aircraft12Median line crossings: northern, central, southwestern and eastern airspace (10 sorties)
May 2899100%Manned aircraft6Median line crossings: central and southwestern airspace (9 sorties)
May 2710990%Manned aircraft7Median line crossings: northern, central and southwestern airspace (9 sorties)
May 26292483%Manned aircraft8Median line crossings: northern, central, southwestern and eastern airspace (24 sorties)
May 25900%Manned aircraft8Activity: southwestern and eastern airspace (8 sorties)
May 244375%Manned aircraft6Median line crossings: southwestern and southeastern airspace (3 sorties)
May 23161381%Manned aircraft8Median line crossings: northern, central, southwestern and eastern airspace (13 sorties)
May 22600%Manned aircraft10Activity: northern, southwestern and eastern airspace (6 sorties)
May 217686%Manned aircraft8Median line crossings: northern and southwestern airspace (6 sorties)
May 20241354%Manned aircraft9Median line crossings: northern, central, southwestern and eastern airspace (13 sorties)
May 19131077%Manned aircraft7Median line crossings: northern, southwestern and eastern airspace (10 sorties)
May 1877100%Manned aircraft6Median line crossings: northern airspace; southwestern airspace (7 sorties)
May 175480%Manned aircraft8Median line crossings: northern and southwestern airspace (4 sorties)
May 1600No activity9
May 1500No activity8
May 14300%Manned aircraft6Activity: southwestern and eastern airspace (3 sorties)
May 13200%Manned aircraft8Activity: southwestern airspace (1 sorties)
May 12900%Manned aircraft8Activity: southwestern and eastern airspace (5 sorties)
May 117571%Manned aircraft6Median line crossings: central and southwestern airspace (5 sorties)
May 1012975%Manned aircraft6Median line crossings: northern and southwestern airspace
May 988100%Manned aircraft8Median line crossings: central, southwestern and eastern airspace (8 sorties)
May 8121083%Manned aircraft8Median line crossings: northern, southwestern and eastern airspace (10 sorties)
May 7221882%Manned aircraft7Median line crossings: northern, central, southwestern and eastern airspace (18 sorties)
May 600No activity8
May 5100%Manned aircraft7Activity: northern airspace (1 sorties)
May 4200%Manned aircraft11northern airspace (1 sorties); southwestern airspace (1 sorties)
May 311100%Manned aircraft10Activity: northern airspace (1 sorties)
May 2291552%Manned aircraft8Median line crossings: northern, central and southwestern airspace (15 sorties)
May 1400%Manned aircraft7Activity: southwestern airspace (4 sorties)
Apr 30200%Manned aircraft7Activity: southwestern and eastern airspace (2 sorties)
Apr 2910990%Manned aircraft12Median line crossings: northern, southwestern and eastern airspace
Apr 28222091%Manned aircraft9Median line crossings: northern and southwestern airspace (20 sorties)
Apr 27700%Manned aircraft9Activity: northern and southwestern airspace (6 sorties)
Apr 26281864%Manned aircraft8Median line crossings: northern, central and southwestern airspace (18 sorties)
Apr 25800%Manned aircraft7
Apr 24200%Manned aircraft7
Apr 231500%Manned aircraft6Activity: southwestern airspace (14 sorties)
Apr 22600%Manned aircraft6southwestern airspace (4 sorties); eastern airspace (4 sorties)
Apr 21241146%Manned aircraft8Median line crossings: northern, southwestern and eastern airspace
Apr 20500%Manned aircraft12Activity: southwestern airspace (4 sorties)
Apr 19200%Helicopter7Activity: eastern airspace (2 sorties)
Apr 18500%Manned aircraft7Activity: southwestern and eastern airspace (3 sorties)
Apr 17500%UAV / Support aircraft6northeastern airspace; southwestern airspace (3 sorties)
Apr 16300%Manned aircraft9
Apr 15500%Manned aircraft9
Apr 14900%Manned aircraft9
Apr 1300No activity10
Apr 12200%Manned aircraft12ADIZ entry: southeastern airspace (1 sorties)
Apr 11171588%Bomber8Median line crossings: northern and southwestern airspace
Apr 1077100%Manned aircraft8Median line crossings: northern and southwestern airspace
Apr 96583%Manned aircraft8Median line crossings: northern and southwestern airspace
Apr 822100%Mixed10ADIZ entry: northern and southeastern airspace
Apr 7100%Manned aircraft9ADIZ entry: southwestern airspace
Apr 633100%Manned aircraft8Median line crossings: northern and eastern airspace
Apr 500No activity7
Apr 4200%Manned aircraft8ADIZ entry: eastern airspace
Apr 3200%Helicopter8Helicopter-only day (first time), eastern ADIZ
Apr 222100%Helicopter / Support aircraft9Support aircraft + helicopter
Apr 1251664%Mixed11Second wave new high, N/Central/SW vectors
Mar 311111100%Support aircraft8Main + support aircraft, southwestern airspace
Mar 3011100%Support aircraft10Sudden halt; support aircraft
Mar 29191368%Mixed11Simultaneous crossings on all four vectors
Mar 2813969%Helicopter92 helicopters
Mar 276467%Helicopter12Helicopter first appearance (1 unit)
Mar 2644100%Mixed12
Mar 25161381%Mixed12Second wave peak
Mar 2433100%Mixed10
Mar 2300No activity10
Mar 2200No activity7Second wave beginning
Mar 212150%UAV8
Mar 206467%Mixed8
Mar 196467%Mixed8
Mar 1812542%Mixed9
Mar 17362467%Mixed8First wave peak — coverage on all four vectors
Mar 1622100%Mixed8
Mar 15200%UAV7
Mar 14261662%Mixed7First wave escalation
Mar 1333100%Manned aircraft5Xichang rocket transited ADIZ (06:33)
Mar 123133%Mixed5
Mar 115360%Mixed6Rocket launch warning
Mar 1000No activity6
Mar 900No activity6
Mar 800No activity8
Mar 700No activity8
Mar 600No activity7
Mar 522100%Manned aircraft7
Mar 400No activity6
Mar 300No activity5
Mar 200No activity5
Mar 100No activity7PRC balloon crossed median line (60 nm NW of Keelung, 14,000 ft)
Feb 2800No activity71 PRC surveillance balloon(s) detected
Feb 278675%Manned aircraft62 PRC surveillance balloon(s) detected; Median line crossings: central and southwestern airspace
Feb 26302273%Manned aircraft62 PRC surveillance balloon(s) detected; Median line crossings: northern, central and southwestern airspace
Feb 2500No activity5
Feb 2400No activity52 PRC surveillance balloon(s) detected
Feb 2300No activity5
Feb 222150%Manned aircraft6Median line crossings: northern airspace
Feb 2188100%Manned aircraft7Median line crossings: northern, central and southwestern airspace
Feb 20141071%Manned aircraft6Median line crossings: northern, central and southwestern airspace
Feb 1900No activity6
Feb 1800No activity51 PRC surveillance balloon(s) detected
Feb 1700No activity51 PRC surveillance balloon(s) detected
Feb 16300%Manned aircraft6
Feb 1511982%Manned aircraft8Median line crossings: northern and southwestern airspace
Feb 14100%Manned aircraft8
Feb 13423276%Manned aircraft11Median line crossings: northern, central, southwestern and eastern airspace
Feb 12171482%Manned aircraft6Median line crossings: northern, southwestern and southeastern airspace
Feb 119667%Manned aircraft8Median line crossings: southwestern and southeastern airspace
Feb 10400%Manned aircraft8
Feb 900No activity7
Feb 800No activity71 PRC surveillance balloon(s) detected
Feb 7600%Manned aircraft7
Feb 68675%Manned aircraft6Median line crossings: southwestern and eastern airspace
Feb 5121192%Manned aircraft71 PRC surveillance balloon(s) detected; Median line crossings: northern and southwestern airspace
Feb 4131185%Manned aircraft6Median line crossings: northern and southwestern airspace
Feb 322100%Manned aircraft6Median line crossings: northern and southwestern airspace
Feb 200No activity6
Feb 100No activity6
Jan 31300%Manned aircraft8
Jan 30261973%Manned aircraft6Median line crossings: northern, central and southwestern airspace
Jan 29500%Manned aircraft51 PRC surveillance balloon(s) detected
Jan 28400%Manned aircraft51 PRC surveillance balloon(s) detected
Jan 27200%Manned aircraft5
Jan 26500%Manned aircraft81 PRC surveillance balloon(s) detected
Jan 254250%Manned aircraft7Median line crossings: central and southwestern airspace
Jan 24261869%Manned aircraft61 PRC surveillance balloon(s) detected; Median line crossings: northern, central and southwestern airspace
Jan 2311982%Manned aircraft52 PRC surveillance balloon(s) detected; Median line crossings: northern and southwestern airspace
Jan 22200%Manned aircraft55 PRC surveillance balloon(s) detected
Jan 21400%Manned aircraft62 PRC surveillance balloon(s) detected
Jan 202150%Manned aircraft6Median line crossings: northern airspace
Jan 1922100%Manned aircraft8Median line crossings: southwestern airspace
Jan 189333%Manned aircraft9Median line crossings: southwestern airspace
Jan 1726727%Manned aircraft8Median line crossings: northern, central and southwestern airspace
Jan 16341853%Manned aircraft11Median line crossings: northern, central, southwestern and eastern airspace
Jan 1599100%Manned aircraft111 PRC surveillance balloon(s) detected; Median line crossings: northern, southwestern and eastern airspace
Jan 14201785%Manned aircraft9Median line crossings: northern, southwestern and eastern airspace
Jan 1310330%Manned aircraft5Median line crossings: northern and southwestern airspace
Jan 1200No activity54 PRC surveillance balloon(s) detected
Jan 114125%Manned aircraft6Median line crossings: northern airspace
Jan 10300%Manned aircraft6
Jan 9231983%Manned aircraft6Median line crossings: northern, central, southwestern and eastern airspace
Jan 899100%Manned aircraft5Median line crossings: northern and southwestern airspace
Jan 711982%Manned aircraft61 PRC surveillance balloon(s) detected; Median line crossings: northern and southwestern airspace
Jan 6800%Manned aircraft72 PRC surveillance balloon(s) detected
Jan 533100%Manned aircraft82 PRC surveillance balloon(s) detected
Jan 400No activity51 PRC surveillance balloon(s) detected
Jan 34125%Manned aircraft61 PRC surveillance balloon(s) detected; Median line crossings: central airspace
Jan 200No activity62 PRC surveillance balloon(s) detected
Jan 1300%Manned aircraft172 PRC surveillance balloon(s) detected