{"schema_version":1,"airport":"4V1","entries":[{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"673bae91d8d4","priority":"fyi","category":"runway","kind":"changed","summary":"runway 02: controlling obstacle changed (now 10 ft tall, 169 ft from threshold, 0 ft either side of centerline, clearance slope 16:1)","source":"APT_RWY_END","fields":[{"field":"DIST_FROM_THR","old":"200","new":"169"},{"field":"OBSTN_HGT","old":"12","new":"10"}]},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"ac29a6ccac02","priority":"fyi","category":"runway","kind":"changed","summary":"runway 20: controlling obstacle changed (now 10 ft tall, 194 ft from threshold, 0 ft either side of centerline, clearance slope 19:1); controlling obstacle: none -> FENCE","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"","new":"B"},{"field":"CNTRLN_OFFSET","old":"","new":"0"},{"field":"DIST_FROM_THR","old":"","new":"194"},{"field":"OBSTN_CLNC_SLOPE","old":"50","new":"19"},{"field":"OBSTN_HGT","old":"","new":"10"},{"field":"OBSTN_TYPE","old":"","new":"FENCE"}]}],"first_cycle":"2026-09-03","last_cycle":"2026-09-03"}