{"schema_version":1,"airport":"8C4","entries":[{"cycle":"2025-12-25","from_cycle":"2025-11-27","id":"0ac467dfe638","priority":"fyi","category":"runway","kind":"changed","summary":"runway 11: controlling obstacle changed (now , clearance slope 20:1); controlling obstacle: TREES -> none","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"R","new":""},{"field":"CNTRLN_OFFSET","old":"7","new":""},{"field":"DIST_FROM_THR","old":"3042","new":""},{"field":"OBSTN_CLNC_SLOPE","old":"40","new":"20"},{"field":"OBSTN_HGT","old":"70","new":""},{"field":"OBSTN_TYPE","old":"TREES","new":""}]}],"first_cycle":"2025-12-25","last_cycle":"2025-12-25"}