{"schema_version":1,"airport":"13Y","entries":[{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"ca69eabc3d49","priority":"fyi","category":"runway","kind":"changed","summary":"runway 27: controlling obstacle changed (now 44 ft tall, 828 ft from threshold, 130 ft either side of centerline, clearance slope 18:1); controlling obstacle: none -> TREES","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"","new":"B"},{"field":"CNTRLN_OFFSET","old":"","new":"130"},{"field":"DIST_FROM_THR","old":"","new":"828"},{"field":"OBSTN_CLNC_SLOPE","old":"20","new":"18"},{"field":"OBSTN_HGT","old":"","new":"44"},{"field":"OBSTN_TYPE","old":"","new":"TREES"}]}],"first_cycle":"2026-09-03","last_cycle":"2026-09-03"}