{"schema_version":1,"airport":"7W4","entries":[{"cycle":"2026-10-01","from_cycle":"2026-09-03","engine":"1.3.8","id":"f6eac04a7102","priority":"fyi","category":"runway","kind":"changed","summary":"runway 08: controlling obstacle: TREES 63 ft tall, 1011 ft from threshold, 13 ft left of centerline -> TREES 50 ft tall, 760 ft from threshold, 146 ft left of centerline; obstacle clearance slope: 12:1 -> 11:1","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"13","new":"146"},{"field":"DIST_FROM_THR","old":"1011","new":"760"},{"field":"OBSTN_CLNC_SLOPE","old":"12","new":"11"},{"field":"OBSTN_HGT","old":"63","new":"50"}]},{"cycle":"2026-10-01","from_cycle":"2026-09-03","engine":"1.3.8","id":"bdc901011677","priority":"fyi","category":"runway","kind":"changed","summary":"runway 26: controlling obstacle: TREE 59 ft tall, 1022 ft from threshold, 116 ft left of centerline -> TREE 60 ft tall, 962 ft from threshold, 158 ft left of centerline; obstacle clearance slope: 13:1 -> 12:1","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"116","new":"158"},{"field":"DIST_FROM_THR","old":"1022","new":"962"},{"field":"OBSTN_CLNC_SLOPE","old":"13","new":"12"},{"field":"OBSTN_HGT","old":"59","new":"60"}]}],"first_cycle":"2026-10-01","last_cycle":"2026-10-01"}