{"schema_version":1,"from_cycle":"2026-10-01","to_cycle":"2026-10-29","airport":"61S","counts":{"action":1,"ifr":0,"fyi":3},"changes":[{"id":"90fed0bdd209","priority":"action","category":"airport","kind":"removed","summary":"airport attendance: MON-SAT 1000-1900 -> none listed","source":"APT_ATT","fields":[{"field":"ATTENDANCE","old":"MON-SAT 1000-1900","new":""}]},{"id":"ae89a8bf21aa","priority":"fyi","category":"remark","kind":"added","summary":"new remark: Airport is unattended.","source":"APT_RMK","original":"ARPT UNATNDD."},{"id":"e336ccd59b23","priority":"fyi","category":"runway","kind":"changed","summary":"runway 15: controlling obstacle: TREES 56 ft tall, 881 ft from threshold, 125 ft right of centerline -> TREES 142 ft tall, 1621 ft from threshold, 256 ft right of centerline; obstacle clearance slope: 12:1 -> 10:1","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"125","new":"256"},{"field":"DIST_FROM_THR","old":"881","new":"1621"},{"field":"OBSTN_CLNC_SLOPE","old":"12","new":"10"},{"field":"OBSTN_HGT","old":"56","new":"142"}]},{"id":"1931dcce3765","priority":"fyi","category":"runway","kind":"changed","summary":"runway 33: controlling obstacle: TREES 52 ft tall, 894 ft from threshold, 100 ft right of centerline -> TREES 37 ft tall, 493 ft from threshold, 137 ft left of centerline; obstacle clearance slope: 13:1 -> 7:1","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"R","new":"L"},{"field":"CNTRLN_OFFSET","old":"100","new":"137"},{"field":"DIST_FROM_THR","old":"894","new":"493"},{"field":"OBSTN_CLNC_SLOPE","old":"13","new":"7"},{"field":"OBSTN_HGT","old":"52","new":"37"}]}]}