{"schema_version":1,"airport":"E81","entries":[{"cycle":"2026-06-11","from_cycle":"2026-05-14","id":"fb11c9489cfa","priority":"fyi","category":"runway","kind":"changed","summary":"runway 04: controlling obstacle changed (now , clearance slope 20:1); controlling obstacle: TREE -> none","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"R","new":""},{"field":"CNTRLN_OFFSET","old":"65","new":""},{"field":"DIST_FROM_THR","old":"30","new":""},{"field":"OBSTN_CLNC_SLOPE","old":"3","new":"20"},{"field":"OBSTN_HGT","old":"8","new":""},{"field":"OBSTN_TYPE","old":"TREE","new":""}]}],"first_cycle":"2026-06-11","last_cycle":"2026-06-11"}