{"schema_version":1,"airport":"AIZ","entries":[{"cycle":"2026-08-06","from_cycle":"2026-07-09","id":"4b2d09ffef72","priority":"fyi","category":"runway","kind":"changed","summary":"runway 04: runway end elevation: 862.8 -> 862.9 ft MSL; touchdown zone elevation: 863.3 -> 863.5 ft MSL","source":"APT_RWY_END","fields":[{"field":"RWY_END_ELEV","old":"862.8","new":"862.9"},{"field":"TDZ_ELEV","old":"863.3","new":"863.5"}]},{"cycle":"2026-08-06","from_cycle":"2026-07-09","id":"ae3df6951200","priority":"fyi","category":"runway","kind":"changed","summary":"runway 22: runway end elevation: 868.8 -> 869 ft MSL; touchdown zone elevation: 868.8 -> 869 ft MSL","source":"APT_RWY_END","fields":[{"field":"RWY_END_ELEV","old":"868.8","new":"869"},{"field":"TDZ_ELEV","old":"868.8","new":"869"}]},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"715308038c91","priority":"fyi","category":"chart","kind":"changed","summary":"airport diagram changed","source":"D-TPP","chart":{"code":"APD","name":"AIRPORT DIAGRAM","amdt":"","pdf":"https://aeronav.faa.gov/d-tpp/2607/05765AD.PDF"}},{"cycle":"2025-11-27","from_cycle":"2025-10-30","id":"12485576384b","priority":"action","category":"navaid","kind":"removed","summary":"LOC RWY 22 (AIZ): removed","source":"ILS_BASE","fields":[{"field":"RWY_END_ID","old":"22","new":""},{"field":"ILS_LOC_ID","old":"AIZ","new":""},{"field":"SYSTEM_TYPE_CODE","old":"LC","new":""},{"field":"STATE_NAME","old":"MISSOURI","new":""},{"field":"REGION_CODE","old":"ACE","new":""},{"field":"RWY_LEN","old":"6497","new":""}]},{"cycle":"2025-11-27","from_cycle":"2025-10-30","id":"367d8d6bbeed","priority":"ifr","category":"navaid","kind":"removed","summary":"removed localizer RWY 22 remark: LOC UNMONITORED 1900-0700.","source":"ILS_RMK","original":"LOC UNMONITORED 1900-0700."},{"cycle":"2025-11-27","from_cycle":"2025-10-30","id":"ab2180a9e0e6","priority":"fyi","category":"runway","kind":"changed","summary":"runway 22: instrument landing system: localizer -> none","source":"APT_RWY_END","fields":[{"field":"ILS_TYPE","old":"LOCALIZER","new":""}]},{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"1278d4dfb028","priority":"action","category":"airport","kind":"changed","summary":"airport attendance hours changed: 0800-2000 -> 0800-1800","source":"APT_ATT","fields":[{"field":"HOUR","old":"0800-2000","new":"0800-1800"}]},{"cycle":"2025-04-17","from_cycle":"2025-03-20","id":"d3a21f4f3c7e","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: ACTVT VASI RWY 04 & 22 - CTAF. MIRLS ARE ON PHOTOCELL.","source":"APT_RMK","original":"ACTVT VASI RWY 04 & 22 - CTAF. MIRLS ARE ON PHOTOCELL.","fields":[{"field":"REMARK","old":"ACTVT VASI RYS 04 & 22 - CTAF. MIRLS ARE ON PHOTOCELL.","new":"ACTVT VASI RWY 04 & 22 - CTAF. MIRLS ARE ON PHOTOCELL."}]},{"cycle":"2025-04-17","from_cycle":"2025-03-20","id":"8a0fa8a702bf","priority":"fyi","category":"frequency","kind":"changed","summary":"remark: ACTVT VASI RYS 04 & 22 - CTAF. MIRLS ARE ON PHOTOCELL. -> ACTVT VASI RWY 04 & 22 - CTAF. MIRLS ARE ON PHOTOCELL.","source":"FRQ","fields":[{"field":"REMARK","old":"ACTVT VASI RYS 04 & 22 - CTAF. MIRLS ARE ON PHOTOCELL.","new":"ACTVT VASI RWY 04 & 22 - CTAF. MIRLS ARE ON PHOTOCELL."}]},{"cycle":"2025-04-17","from_cycle":"2025-03-20","id":"3ee1ea821a30","priority":"fyi","category":"runway","kind":"changed","summary":"runway 04: threshold crossing height: 55 -> 53 ft AGL","source":"APT_RWY_END","fields":[{"field":"THR_CROSSING_HGT","old":"55","new":"53"}]},{"cycle":"2025-04-17","from_cycle":"2025-03-20","id":"347f9c4a78e2","priority":"fyi","category":"runway","kind":"changed","summary":"runway 22: runway end elevation: 868.9 -> 868.8 ft MSL; touchdown zone elevation: 868.9 -> 868.8 ft MSL; threshold crossing height: 42 -> 43 ft AGL","source":"APT_RWY_END","fields":[{"field":"RWY_END_ELEV","old":"868.9","new":"868.8"},{"field":"TDZ_ELEV","old":"868.9","new":"868.8"},{"field":"THR_CROSSING_HGT","old":"42","new":"43"}]}],"first_cycle":"2025-04-17","last_cycle":"2026-08-06"}