{"schema_version":1,"airport":"1A4","entries":[{"cycle":"2025-03-20","from_cycle":"2025-02-20","id":"83c16f1c08d2","priority":"fyi","category":"runway","kind":"changed","summary":"runway 05: controlling obstacle changed (now 45 ft tall, 1041 ft from threshold, 133 ft right of centerline, clearance slope 18:1); controlling obstacle: TREES -> TREE","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"L","new":"R"},{"field":"CNTRLN_OFFSET","old":"216","new":"133"},{"field":"DIST_FROM_THR","old":"509","new":"1041"},{"field":"OBSTN_CLNC_SLOPE","old":"3","new":"18"},{"field":"OBSTN_HGT","old":"87","new":"45"},{"field":"OBSTN_TYPE","old":"TREES","new":"TREE"}]},{"cycle":"2025-03-20","from_cycle":"2025-02-20","id":"efc351981987","priority":"fyi","category":"runway","kind":"changed","summary":"runway 23: controlling obstacle changed (now 98 ft tall, 1428 ft from threshold, 51 ft left of centerline, clearance slope 12:1)","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"168","new":"51"},{"field":"DIST_FROM_THR","old":"230","new":"1428"},{"field":"OBSTN_CLNC_SLOPE","old":"0","new":"12"},{"field":"OBSTN_HGT","old":"35","new":"98"}]}],"first_cycle":"2025-03-20","last_cycle":"2025-03-20"}