{"schema_version":1,"airport":"5T4","entries":[{"cycle":"2026-05-14","from_cycle":"2026-04-16","id":"8064aa52f972","priority":"fyi","category":"runway","kind":"changed","summary":"runway 30: controlling obstacle changed (now 15 ft tall, 314 ft from threshold, 0 ft either side of centerline, clearance slope 20:1)","source":"APT_RWY_END","fields":[{"field":"OBSTN_CLNC_SLOPE","old":"16","new":"20"},{"field":"OBSTN_HGT","old":"19","new":"15"}]}],"first_cycle":"2026-05-14","last_cycle":"2026-05-14"}