{"schema_version":1,"from_cycle":"2026-10-01","to_cycle":"2026-10-29","airport":"4C4","counts":{"action":0,"ifr":0,"fyi":1},"changes":[{"id":"1cd18c2e29ec","priority":"fyi","category":"runway","kind":"changed","summary":"runway 04: controlling obstacle: TREES 75 ft tall, 70 ft from threshold, 117 ft right of centerline -> TREES 28 ft tall, 12 ft from threshold, 101 ft left of centerline","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"R","new":"L"},{"field":"CNTRLN_OFFSET","old":"117","new":"101"},{"field":"DIST_FROM_THR","old":"70","new":"12"},{"field":"OBSTN_HGT","old":"75","new":"28"}]}]}