{"schema_version":1,"airport":"ALN","entries":[{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"1ef185e2c179","priority":"ifr","category":"chart","kind":"changed","summary":"minimums page (ALTERNATE MINIMUMS) changed","source":"D-TPP","chart":{"code":"MIN","name":"ALTERNATE MINIMUMS","amdt":"","pdf":"https://aeronav.faa.gov/d-tpp/2609/EC3ALT.PDF"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"12b79f88c3ee","priority":"ifr","category":"chart","kind":"removed","summary":"approach VOR-A removed","source":"D-TPP","chart":{"code":"IAP","name":"VOR-A","amdt":"9B"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"5ad891d2596a","priority":"ifr","category":"chart","kind":"changed","summary":"departure GATEWAY ONE changed","source":"D-TPP","chart":{"code":"DP","name":"GATEWAY ONE","amdt":"","pdf":"https://aeronav.faa.gov/d-tpp/2609/05178GATEWAY.PDF"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"c6f9645c31b1","priority":"ifr","category":"chart","kind":"changed","summary":"departure LINDBERGH NINE changed","source":"D-TPP","chart":{"code":"DP","name":"LINDBERGH NINE","amdt":"","pdf":"https://aeronav.faa.gov/d-tpp/2609/05178LINDBERGH.PDF"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"daf8cf6f34b9","priority":"ifr","category":"chart","kind":"changed","summary":"departure OZARK EIGHT changed","source":"D-TPP","chart":{"code":"DP","name":"OZARK EIGHT","amdt":"","pdf":"https://aeronav.faa.gov/d-tpp/2609/05178OZARK.PDF"}},{"cycle":"2026-02-19","from_cycle":"2026-01-22","id":"9ed16a9b7be8","priority":"fyi","category":"remark","kind":"added","summary":"new remark: MIGRATORY BIRD ACTIVITY IN VICINITY OF ARPT SEPTEMBER THROUGH APRIL.","source":"APT_RMK","original":"MIGRATORY BIRD ACTIVITY IN VICINITY OF ARPT SEPTEMBER THROUGH APRIL."},{"cycle":"2026-02-19","from_cycle":"2026-01-22","id":"5b1e3aa0dfd5","priority":"fyi","category":"remark","kind":"added","summary":"new remark: WILDLIFE ON AND IN VICINITY OF AIRPORT","source":"APT_RMK","original":"WILDLIFE ON AND IN VICINITY OF AIRPORT"},{"cycle":"2025-11-27","from_cycle":"2025-10-30","id":"7bee5316ee42","priority":"action","category":"weather","kind":"changed","summary":"weather station type: AWOS-3 -> AWOS-3PT","source":"AWOS","fields":[{"field":"ASOS_AWOS_TYPE","old":"AWOS-3","new":"AWOS-3PT"}]},{"cycle":"2025-11-27","from_cycle":"2025-10-30","id":"1a6f8129712d","priority":"action","category":"frequency","kind":"changed","summary":"frequency 128.0 now listed for ALN AWOS-3PT (was ALN AWOS-3); served facility type: AWOS-3 -> AWOS-3PT","source":"FRQ","fields":[{"field":"FREQ_USE","old":"ALN AWOS-3","new":"ALN AWOS-3PT"},{"field":"SERVICED_SITE_TYPE","old":"AWOS-3","new":"AWOS-3PT"}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"5380c2b87f45","priority":"action","category":"remark","kind":"added","summary":"new remark: RWY 11/29 NOT AVBL FOR PART 121/PART 380 OPS WITH SKED PAX CARRYING OPS MORE THAN 9 PAX SEATS AND NON-SKED PAX CARRYING OPS MORE THAN 30 PAX SEATS. 90 DAY PPR FOR UNSKED ACR OPS GTR THAN 30 PAX SEATS - CALL AMGR.","source":"APT_RMK","original":"RWY 11/29 NOT AVBL FOR PART 121/PART 380 OPS WITH SKED PAX CARRYING OPS MORE THAN 9 PAX SEATS AND NON-SKED PAX CARRYING OPS MORE THAN 30 PAX SEATS. 90 DAY PPR FOR UNSKED ACR OPS GTR THAN 30 PAX SEATS - CALL AMGR."},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"a00de2f74a38","priority":"action","category":"remark","kind":"added","summary":"new remark: RWY 17/35 NOT AVBL FOR PART 121/PART 380 OPS WITH SKED PAX CARRYING OPS MORE THAN 9 PAX SEATS AND NON-SKED PAX CARRYING OPS MORE THAN 30 PAX SEATS. 90 DAY PPR FOR UNSKED ACR OPS GTR THAN 30 PAX SEATS - CALL AMGR.","source":"APT_RMK","original":"RWY 17/35 NOT AVBL FOR PART 121/PART 380 OPS WITH SKED PAX CARRYING OPS MORE THAN 9 PAX SEATS AND NON-SKED PAX CARRYING OPS MORE THAN 30 PAX SEATS. 90 DAY PPR FOR UNSKED ACR OPS GTR THAN 30 PAX SEATS - CALL AMGR."},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"3f4b47618e8b","priority":"action","category":"remark","kind":"removed","summary":"remark removed: CLSD TO SKED ACR OPS WITH GTR THAN 9 PSGR SEATS. UNSKED ACR OPS GTR THAN 30 PSGR SEATS RQR 90 DAY PPR - CTC AMGR.","source":"APT_RMK","original":"CLSD TO SKED ACR OPS WITH GTR THAN 9 PSGR SEATS. UNSKED ACR OPS GTR THAN 30 PSGR SEATS RQR 90 DAY PPR - CTC AMGR."},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"ec543b86723d","priority":"fyi","category":"runway","kind":"changed","summary":"runway 29: LAHSO available landing distance: 6850 ft -> none; LAHSO hold-short point latitude: 38-53-37.9809N -> none; LAHSO hold-short point longitude: 090-03-03.3605W -> none; LAHSO hold-short runway: 17/35 -> none","source":"APT_RWY_END","fields":[{"field":"LAHSO_ALD","old":"6850","new":""},{"field":"LAHSO_LAT","old":"38-53-37.9809N","new":""},{"field":"LAHSO_LONG","old":"090-03-03.3605W","new":""},{"field":"RWY_END_INTERSECT_LAHSO","old":"17/35","new":""}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"dcb74725c39e","priority":"fyi","category":"runway","kind":"changed","summary":"runway 35: LAHSO available landing distance: 5100 ft -> none; LAHSO hold-short point latitude: 38-53-37.7620N -> none; LAHSO hold-short point longitude: 090-03-06.5867W -> none; LAHSO hold-short runway: 11/29 -> none","source":"APT_RWY_END","fields":[{"field":"LAHSO_ALD","old":"5100","new":""},{"field":"LAHSO_LAT","old":"38-53-37.7620N","new":""},{"field":"LAHSO_LONG","old":"090-03-06.5867W","new":""},{"field":"RWY_END_INTERSECT_LAHSO","old":"11/29","new":""}]},{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"e3a4f14d915d","priority":"ifr","category":"route","kind":"changed","summary":"preferred IFR routes: 1 changed, 1 removed","source":"PFR","details":["preferred IFR route ALN -> MDW is now: ALN SPI POOGY ENDEE8 MDW","preferred IFR route ALN -> ORD removed"]},{"cycle":"2025-06-12","from_cycle":"2025-05-15","id":"9def2092087c","priority":"ifr","category":"route","kind":"changed","summary":"preferred IFR routes: 1 changed","source":"PFR","details":["preferred IFR route ALN -> MDW is now: ALN SPI POOGY ENDEE7 MDW"]},{"cycle":"2025-05-15","from_cycle":"2025-04-17","id":"049933da7f45","priority":"action","category":"remark","kind":"removed","summary":"remark removed: ATCT OPERATED BY CONTRACT WITH MIDWEST ATC SERVICES INC.","source":"ATC_RMK","original":"ATCT OPERATED BY CONTRACT WITH MIDWEST ATC SERVICES INC."},{"cycle":"2024-12-26","from_cycle":"2024-11-28","id":"24346e2f89f3","priority":"ifr","category":"route","kind":"changed","summary":"preferred IFR routes: 1 changed, 1 removed","source":"PFR","details":["preferred IFR route ALN -> MDW removed","preferred IFR route ALN -> ORD is now: ALN LEBOY BDF BDF9 ORD"]},{"cycle":"2024-10-31","from_cycle":"2024-10-03","id":"c618d87cb30d","priority":"ifr","category":"route","kind":"changed","summary":"preferred IFR routes: 1 changed","source":"PFR","details":["preferred IFR route ALN -> MDW is now: ALN SPI MOTIF7 MDW"]},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"65ccb3eb70b8","priority":"ifr","category":"procedure","kind":"changed","summary":"arrival/departure procedures new or updated: PLESS, TWILA","source":"STAR/DP","procedures":{"updated":["PLESS","TWILA"],"removed":[]}}],"first_cycle":"2024-09-05","last_cycle":"2026-09-03"}