DateSortiesCrossings Cross RateTypeVessels Notes
November 20268 days · 161 sorties
Nov 8400%Manned aircraft8Activity: southwestern airspace (2 sorties)
Nov 711982%Manned aircraft13Median line crossings: northern and southwestern airspace (9 sorties)
Nov 6300%Manned aircraft17Activity: southwestern airspace (2 sorties)
Nov 5211990%Manned aircraft16Median line crossings: northern, central, southwestern and eastern airspace (19 sorties)
Nov 4221464%Manned aircraft12ADIZ entry: southwestern and eastern airspace
Nov 3493163%Mixed12ADIZ entry: central, southwestern and eastern airspace
Nov 21900%Manned aircraft13ADIZ entry: southwestern and eastern airspace
Nov 1322681%Manned aircraft9Median line crossings: northern, central, southwestern and eastern airspace (26 sorties)
October 202630 days · 221 sorties
Oct 3113646%Manned aircraft9Median line crossings: northern, central and southwestern airspace (6 sorties)
Oct 306350%Manned aircraft8Median line crossings: northern, eastern and southwestern airspace (3 sorties)
Oct 296583%Manned aircraft8ADIZ entry: northern, central and southwestern airspace
Oct 28600%Manned aircraft8
Oct 27300%Manned aircraft12ADIZ entry: northern and southwestern airspace
Oct 263133%Manned aircraft15Median line crossings: southwestern and eastern airspace (1 sorties)
Oct 2500—No activity13
Oct 2400—No activity6
Oct 2300—No activity10
Oct 2200—No activity13
Oct 21292379%Manned aircraft15Median line crossings: northern, central, southwestern and eastern airspace (23 sorties)
Oct 2014857%Manned aircraft14Median line crossings: northern, central, southwestern and eastern airspace (8 sorties)
Oct 195360%Manned aircraft15Activity: northern, central and southwestern airspace (3 sorties)
Oct 179556%Manned aircraft14Median line crossings: northern, central and southwestern airspace (5 sorties)
Oct 1688100%Manned aircraft16Median line crossings: northern and southwestern airspace (8 sorties)
Oct 15151387%Manned aircraft17Median line crossings: northern, central, southwestern and eastern airspace (13 sorties)
Oct 1499100%Manned aircraft12Median line crossings: northern, central, southwestern and eastern airspace (9 sorties)
Oct 135480%Manned aircraft10Median line crossings: central and southwestern airspace (4 sorties)
Oct 12400%Manned aircraft9ADIZ entry: northern, central and southwestern airspace
Oct 111200%Manned aircraft9Activity: southwestern airspace (5 sorties)
Oct 10211362%Manned aircraft9Median line crossings: northern, central and southwestern airspace (13 sorties)
Oct 9200%Manned aircraft7ADIZ entry: northern and southwestern airspace
Oct 8300%Manned aircraft7Activity: southwestern airspace (1 sorties)
Oct 714964%Manned aircraft8Median line crossings: northern, central and southwestern airspace (9 sorties)
Oct 600—No activity16
Oct 500—No activity17
Oct 400—No activity15
Oct 3500%Manned aircraft13ADIZ entry: southwestern and eastern airspace
Oct 26467%Manned aircraft15Median line crossings: southwestern and eastern airspace (4 sorties)
Oct 1231670%Manned aircraft14Median line crossings: northern, central and southwestern airspace (16 sorties)
September 202629 days · 227 sorties
Sep 30900%Manned aircraft13Activity: southwestern airspace (5 sorties)
Sep 29300%Manned aircraft10Activity: southwestern airspace (1 sorties)
Sep 283133%Manned aircraft9Activity: northern airspace (1 sorties)
Sep 27200%Manned aircraft11
Sep 265120%Manned aircraft11Activity: northern airspace (1 sorties)
Sep 25200%Manned aircraft11Activity: eastern airspace (1 sorties)
Sep 2410550%Manned aircraft12Activity: northern and central airspace (5 sorties)
Sep 2310990%Manned aircraft12Median line crossings: southwestern and eastern airspace (9 sorties)
Sep 2244100%Manned aircraft9Median line crossings: central and southwestern airspace (4 sorties)
Sep 214375%Manned aircraft11Median line crossings: central, southwestern and eastern airspace (3 sorties)
Sep 2055100%Manned aircraft17Activity: central, southwestern and eastern airspace (5 sorties)
Sep 19201365%Manned aircraft14Median line crossings: northern, central, southwestern and eastern airspace (13 sorties)
Sep 18282486%Manned aircraft9Median line crossings: northern, central, southwestern and eastern airspace (24 sorties)
Sep 17191790%Manned aircraft10Activity: northern, southwestern and eastern airspace (17 sorties)
Sep 16151280%Manned aircraft10Activity: northern, southwestern and eastern airspace (12 sorties)
Sep 158788%Manned aircraft9Activity: northern, southwestern and eastern airspace (7 sorties)
Sep 14400%Manned aircraft8Activity: southwestern and eastern airspace (2 sorties)
Sep 135360%Manned aircraft7Activity: southwestern and eastern airspace (3 sorties)
Sep 111100%Manned aircraft10Activity: southwestern and eastern airspace (10 sorties)
Sep 10181372%Manned aircraft9Median line crossings: northern, central, southwestern and eastern airspace (13 sorties)
Sep 96233%Manned aircraft11Activity: southwestern and eastern airspace (2 sorties)
Sep 8800%Manned aircraft12Activity: southwestern and eastern airspace (4 sorties)
Sep 722100%Manned aircraft17Median line crossings: southwestern and eastern airspace (2 sorties)
Sep 6211362%Manned aircraft15Median line crossings: northern, central, southwestern and eastern airspace (13 sorties)
Sep 5200%Manned aircraft11Activity: eastern airspace (2 sorties)
Sep 400—No activity10
Sep 300—No activity8
Sep 2100%Manned aircraft8Activity: northern airspace
Sep 1200%Manned aircraft10Activity: northern and eastern airspace (2 sorties)
August 202631 days · 176 sorties
Aug 314375%Manned aircraft10Activity: northern airspace (3 sorties)
Aug 3033100%Manned aircraft13Activity: northern and eastern airspace (3 sorties)
Aug 2900—No activity13
Aug 2800—No activity13
Aug 2700—No activity16
Aug 2600—No activity13
Aug 2500—No activity11
Aug 24200%Manned aircraft9
Aug 2300—No activity14
Aug 2233100%Manned aircraft15Activity: northern and southwestern airspace (3 sorties)
Aug 2100—No activity13
Aug 207571%Manned aircraft14ADIZ entry: northern, southwestern and eastern airspace
Aug 19201575%Manned aircraft13Activity: northern, central, southwestern and eastern airspace (15 sorties)
Aug 185360%Manned aircraft15ADIZ entry: northern and eastern airspace
Aug 17100%Manned aircraft16Activity: northern airspace
Aug 1611764%Manned aircraft10Activity: northern and central airspace (7 sorties)
Aug 154375%Manned aircraft9Median line crossings: northern, central and eastern airspace (3 sorties)
Aug 149667%Manned aircraft14Median line crossings: central, southwestern and eastern airspace (6 sorties)
Aug 13181583%Manned aircraft14Median line crossings: northern, central, southwestern and eastern airspace (15 sorties)
Aug 126467%Manned aircraft8Median line crossings: central and southwestern airspace (4 sorties)
Aug 11200%Manned aircraft13Activity: southwestern airspace (2 sorties)
Aug 10100%Manned aircraft20Activity: southwestern airspace (1 sorties)
Aug 94250%Manned aircraft15Median line crossings: northern and southwestern airspace
Aug 8141179%Manned aircraft14Median line crossings: northern and southwestern airspace (11 sorties)
Aug 710660%Manned aircraft9Median line crossings: central and southwestern airspace (6 sorties)
Aug 614643%Manned aircraft16Median line crossings: central, southwestern and eastern airspace (6 sorties)
Aug 5211781%Manned aircraft14Median line crossings: northern, central and southwestern airspace (17 sorties)
Aug 4600%Manned aircraft13Activity: southwestern and eastern airspace (6 sorties)
Aug 3100%Manned aircraft10Activity: southwestern airspace (1 sorties)
Aug 25360%Manned aircraft10Median line crossings: southwestern airspace (3 sorties)
Aug 1500%Manned aircraft12Activity: southwestern and eastern airspace (5 sorties)
July 202631 days · 268 sorties
Jul 31272281%Manned aircraft11Median line crossings: northern, central, southwestern and eastern airspace (22 sorties)
Jul 30121083%Manned aircraft8Median line crossings: southwestern and eastern airspace (10 sorties)
Jul 298675%Manned aircraft8Median line crossings: northern and eastern airspace (6 sorties)
Jul 28100%Manned aircraft7Activity: southwestern airspace (1 sorties)
Jul 273133%Manned aircraft11Median line crossings: southwestern airspace (1 sorties)
Jul 26400%Manned aircraft10
Jul 25291759%Manned aircraft11Median line crossings: northern, central and southwestern airspace (17 sorties)
Jul 248675%Manned aircraft10Median line crossings: northern, southwestern and eastern airspace (6 sorties)
Jul 23212095%Manned aircraft8Median line crossings: northern and southwestern airspace (20 sorties)
Jul 221200%Manned aircraft17Activity: northern, southwestern and eastern airspace (11 sorties)
Jul 2144100%Manned aircraft11Median line crossings: northern, central and southeastern airspace (4 sorties)
Jul 2022100%Manned aircraft8Median line crossings: northern airspace (2 sorties)
Jul 1910880%Manned aircraft12Median line crossings: northern airspace (8 sorties)
Jul 1800—No activity12
Jul 179667%Manned aircraft9Median line crossings: northern and southwestern airspace (6 sorties)
Jul 165360%Manned aircraft9Median line crossings: central and southwestern airspace (3 sorties)
Jul 15600%Manned aircraft10Activity: eastern airspace
Jul 1433100%Manned aircraft14Median line crossings: southwestern airspace
Jul 1300—No activity15
Jul 1200—No activity5
Jul 1100—No activity2
Jul 10200%Manned aircraft8
Jul 9282071%Manned aircraft13Median line crossings: northern, central and southwestern airspace (20 sorties)
Jul 89444%Manned aircraft12Median line crossings: northern, southwestern and eastern airspace (4 sorties)
Jul 74375%Manned aircraft12Median line crossings: southwestern airspace (3 sorties)
Jul 6500%Manned aircraft11Activity: southwestern airspace (3 sorties)
Jul 500—No activity14
Jul 4800%Manned aircraft17Activity: southwestern airspace (6 sorties)
Jul 3302687%Manned aircraft12Median line crossings: northern, central, southwestern and eastern airspace (26 sorties)
Jul 25240%Manned aircraft11Median line crossings: southwestern airspace (2 sorties)
Jul 113969%Manned aircraft13Median line crossings: northern, southwestern and eastern airspace (9 sorties)
June 202629 days · 195 sorties
Jun 30200%Manned aircraft13
Jun 2900—No activity10
Jun 2800—No activity6
Jun 27100%Manned aircraft7
Jun 26200%Manned aircraft6Activity: southwestern airspace (2 sorties)
Jun 25141071%Manned aircraft8Median line crossings: northern and southwestern airspace (10 sorties)
Jun 2411327%Manned aircraft13Median line crossings: northern and southwestern airspace (3 sorties)
Jun 236350%Manned aircraft14Median line crossings: northern and southwestern airspace (3 sorties)
Jun 22232087%Manned aircraft12Median line crossings: northern and southwestern airspace (20 sorties)
Jun 21200%Manned aircraft12
Jun 20500%Manned aircraft14Activity: southwestern airspace
Jun 1944100%Manned aircraft11Median line crossings: northern airspace (4 sorties)
Jun 1800—No activity8
Jun 1700—No activity6
Jun 1500—No activity5
Jun 14100%Manned aircraft7
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 1000—No 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 100—No activity11
May 202631 days · 278 sorties
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: southwestern airspace
May 175480%Manned aircraft8Median line crossings: northern and southwestern airspace (4 sorties)
May 1600—No activity9
May 1500—No 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 (9 sorties)
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 600—No 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)
April 202630 days · 227 sorties
Apr 30200%Manned aircraft7Activity: southwestern and eastern airspace (2 sorties)
Apr 2910990%Manned aircraft12Median line crossings: northern, southwestern and eastern airspace (9 sorties)
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 1300—No 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 500—No 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
March 202631 days · 178 sorties
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 2300—No activity10
Mar 2200—No 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 1000—No activity6
Mar 900—No activity6
Mar 800—No activity8
Mar 700—No activity8
Mar 600—No activity7
Mar 522100%Manned aircraft7
Mar 400—No activity6
Mar 300—No activity5
Mar 200—No activity5
Mar 100—No activity7PRC balloon crossed median line (60 nm NW of Keelung, 14,000 ft)
February 202628 days · 190 sorties
Feb 2800—No 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 2500—No activity5
Feb 2400—No activity52 PRC surveillance balloon(s) detected
Feb 2300—No 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 1900—No activity6
Feb 1800—No activity51 PRC surveillance balloon(s) detected
Feb 1700—No 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 900—No activity7
Feb 800—No 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 200—No activity6
Feb 100—No activity6
January 202631 days · 272 sorties
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 1200—No 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 400—No activity51 PRC surveillance balloon(s) detected
Jan 34125%Manned aircraft61 PRC surveillance balloon(s) detected; Median line crossings: central airspace
Jan 200—No activity62 PRC surveillance balloon(s) detected
Jan 1300%Manned aircraft172 PRC surveillance balloon(s) detected