{"schema_version":1,"from_cycle":"2026-10-29","to_cycle":"2026-11-26","airport":"87IL","counts":{"action":1,"ifr":0,"fyi":4},"changes":[{"id":"b3021a9b21fc","priority":"action","category":"runway","kind":"changed","summary":"runway N/S -> 18/36 (renumbered)","source":"APT_RWY","fields":[{"field":"RWY_ID","old":"N/S","new":"18/36"}]},{"id":"ac703b933247","priority":"fyi","category":"remark","kind":"added","summary":"new runway 18 controlling obstacle clearance slope remark: Approach slope 16:1 to displaced runway threshold.","source":"APT_RMK","original":"APCH SLP 16:1 TO DTHR."},{"id":"1879f508918a","priority":"fyi","category":"remark","kind":"removed","summary":"removed runway S controlling obstacle remark: Also building.","source":"APT_RMK","original":"ALSO BLDG."},{"id":"03dc268e9d80","priority":"fyi","category":"runway","kind":"changed","summary":"runway 18: controlling obstacle: none listed -> HANGAR 39 ft tall, 0 ft from threshold, 0 ft either side of centerline; obstacle clearance slope: none -> 0:1; Part 77 runway category: none -> utility runway with a visual approach (A(V))","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"","new":"B"},{"field":"CNTRLN_OFFSET","old":"","new":"0"},{"field":"DIST_FROM_THR","old":"","new":"0"},{"field":"FAR_PART_77_CODE","old":"","new":"A(V)"},{"field":"OBSTN_CLNC_SLOPE","old":"","new":"0"},{"field":"OBSTN_HGT","old":"","new":"39"},{"field":"OBSTN_TYPE","old":"","new":"HANGAR"}]},{"id":"9fe9d763ba56","priority":"fyi","category":"runway","kind":"changed","summary":"runway 36: controlling obstacle: TREES, 400 ft from threshold -> none listed; obstacle clearance slope: none -> 20:1; Part 77 runway category: none -> utility runway with a visual approach (A(V))","source":"APT_RWY_END","fields":[{"field":"DIST_FROM_THR","old":"400","new":""},{"field":"FAR_PART_77_CODE","old":"","new":"A(V)"},{"field":"OBSTN_CLNC_SLOPE","old":"","new":"20"},{"field":"OBSTN_TYPE","old":"TREES","new":""}]}]}