{"schema_version":1,"airport":"UGN","entries":[{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"b919b260fbc9","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/2607/05324AD.PDF"}},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"8223a2fae4af","priority":"fyi","category":"airport","kind":"changed","summary":"airport contact address: PO BOX 620 -> 2601 PLANE REST DR.; airport contact zip code: 60079 -> 60087","source":"APT_CON","fields":[{"field":"ADDRESS1","old":"PO BOX 620","new":"2601 PLANE REST DR."},{"field":"ZIP_CODE","old":"60079","new":"60087"}]},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"f0abb95a610d","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: ATCTVT MALSR RWY 23; REIL RWY 05; HIRL RWY 05/23; MIRL RWY 14/32 TWY LGTS - CTAF. WHEN ATCT CLSD TO INCR INTST & ACTVT - CTAF","source":"APT_RMK","original":"ATCTVT MALSR RWY 23; REIL RWY 05; HIRL RWY 05/23; MIRL RWY 14/32 TWY LGTS - CTAF. WHEN ATCT CLSD TO INCR INTST & ACTVT - CTAF","fields":[{"field":"REMARK","old":"ACTVT MALSR RWY 23; REIL RWY 05; HIRL RWY 05/23; TWY LGTS - CTAF.  WHEN ATCT CLSD, MIRL RWY 14/32 PRESET TO LOW INTST, TO INCR INTST & ACTVT - CTAF.","new":"ATCTVT MALSR RWY 23; REIL RWY 05; HIRL RWY 05/23; MIRL RWY 14/32 TWY LGTS - CTAF. WHEN ATCT CLSD TO INCR INTST & ACTVT - CTAF"}]},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"8285c5a75b7d","priority":"fyi","category":"frequency","kind":"changed","summary":"remark: ACTVT MALSR RWY 23; REIL RWY 05; HIRL RWY 05/23; TWY LGTS - CTAF.  WHEN ATCT CLSD, MIRL RWY 14/32 PRESET TO LOW INTST, TO INCR INTST & ACTVT - CTAF. -> ATCTVT MALSR RWY 23; REIL RWY 05; HIRL RWY 05/23; MIRL RWY 14/32 TWY LGTS - CTAF. WHEN ATCT CLSD TO INCR INTST & ACTVT - CTAF","source":"FRQ","fields":[{"field":"REMARK","old":"ACTVT MALSR RWY 23; REIL RWY 05; HIRL RWY 05/23; TWY LGTS - CTAF.  WHEN ATCT CLSD, MIRL RWY 14/32 PRESET TO LOW INTST, TO INCR INTST & ACTVT - CTAF.","new":"ATCTVT MALSR RWY 23; REIL RWY 05; HIRL RWY 05/23; MIRL RWY 14/32 TWY LGTS - CTAF. WHEN ATCT CLSD TO INCR INTST & ACTVT - CTAF"}]},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"d1d19dbd5196","priority":"fyi","category":"runway","kind":"changed","summary":"runway 23: controlling obstacle changed (now 1 ft tall, 245 ft from threshold, 500 ft right of centerline, clearance slope 45:1); controlling obstacle: TREE -> ROAD","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"419","new":"500"},{"field":"DIST_FROM_THR","old":"1090","new":"245"},{"field":"OBSTN_CLNC_SLOPE","old":"27","new":"45"},{"field":"OBSTN_HGT","old":"34","new":"1"},{"field":"OBSTN_TYPE","old":"TREE","new":"ROAD"}]},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"9410e0e7333d","priority":"fyi","category":"airport","kind":"changed","summary":"segmented circle: yes -> no","source":"APT_BASE","fields":[{"field":"SEG_CIRCLE_MKR_FLAG","old":"Y","new":"N"}]},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"eea0df8def5e","priority":"ifr","category":"procedure","kind":"changed","summary":"arrival/departure procedures new or updated: GOPAC3","source":"STAR/DP","procedures":{"updated":["GOPAC3"],"removed":[]}}],"first_cycle":"2024-09-05","last_cycle":"2026-07-09"}