{"schema_version":1,"from_cycle":"2026-10-29","to_cycle":"2026-11-26","airport":"LL25","counts":{"action":0,"ifr":3,"fyi":0},"changes":[{"id":"e52166f3b75d","priority":"ifr","category":"tower","kind":"added","summary":"approach/departure control listed: CHICAGO ARTCC (ZAU)","source":"ATC_BASE","fields":[{"field":"FACILITY_TYPE","old":"","new":"NON-ATCT"},{"field":"FACILITY_ID","old":"","new":"LL25"},{"field":"FACILITY_NAME","old":"","new":"OSF ST ELIZABETH MEDICAL CENTER"},{"field":"REGION_CODE","old":"","new":"AGL"},{"field":"PRIMARY_APCH_RADIO_CALL","old":"","new":"CHICAGO ARTCC"},{"field":"APCH_P_PROVIDER","old":"","new":"ZAU"},{"field":"APCH_P_PROV_TYPE_CD","old":"","new":"C"},{"field":"PRIMARY_DEP_RADIO_CALL","old":"","new":"CHICAGO ARTCC"},{"field":"DEP_P_PROVIDER","old":"","new":"ZAU"},{"field":"DEP_P_PROV_TYPE_CD","old":"","new":"C"}]},{"id":"d8e122b07435","priority":"ifr","category":"frequency","kind":"added","summary":"new center (ARTCC ZAU) frequencies: Mazon RCAG 123.75, 259.1 (low altitude); an RCAG is a remote center air to ground facility","source":"FRQ","details":["added: 123.75 MAZON RCAG (LOW)","added: 259.1 MAZON RCAG (LOW)"]},{"id":"6d11bfe358e1","priority":"ifr","category":"remark","kind":"added","summary":"new tower/ATC remark: Approach/departure service PRVDD by Chicago Air Route Traffic Control Center (ZAU) on FREQS 123.75/259.1 (MAZON Remote Center Air to Ground Facility).","source":"ATC_RMK","original":"APCH/DEP SVC PRVDD BY CHICAGO ARTCC (ZAU) ON FREQS 123.75/259.1 (MAZON RCAG)."}]}