{"schema_version":1,"from_cycle":"2026-10-29","to_cycle":"2026-11-26","airport":"W81","counts":{"action":0,"ifr":0,"fyi":4},"changes":[{"id":"4f3e39960563","priority":"fyi","category":"remark","kind":"removed","summary":"removed runway 15 controlling obstacle clearance slope remark: Approach ratio 11:1 to Displaced runway threshold.","source":"APT_RMK","original":"APCH RATIO 11:1 TO DTHR."},{"id":"98ab2fd53630","priority":"fyi","category":"remark","kind":"removed","summary":"removed runway 15 end remark: Rising ground off the end of runway 15.","source":"APT_RMK","original":"RISING GROUND OFF THE END OF RY 15."},{"id":"71b46499bd19","priority":"fyi","category":"runway","kind":"changed","summary":"runway 15: controlling obstacle: TREE 57 ft tall, 569 ft from threshold, 121 ft left of centerline -> TREE 110 ft tall, 727 ft from threshold, 244 ft right of centerline; obstacle clearance slope: 6:1 -> 4:1","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"L","new":"R"},{"field":"CNTRLN_OFFSET","old":"121","new":"244"},{"field":"DIST_FROM_THR","old":"569","new":"727"},{"field":"OBSTN_CLNC_SLOPE","old":"6","new":"4"},{"field":"OBSTN_HGT","old":"57","new":"110"}]},{"id":"937a1c672456","priority":"fyi","category":"runway","kind":"changed","summary":"runway 33: controlling obstacle: TREE 85 ft tall, 2825 ft from threshold, 237 ft right of centerline -> none listed; obstacle clearance slope: 30:1 -> 20:1","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"R","new":""},{"field":"CNTRLN_OFFSET","old":"237","new":""},{"field":"DIST_FROM_THR","old":"2825","new":""},{"field":"OBSTN_CLNC_SLOPE","old":"30","new":"20"},{"field":"OBSTN_HGT","old":"85","new":""},{"field":"OBSTN_TYPE","old":"TREE","new":""}]}]}