{"schema_version":1,"airport":"3W9","entries":[{"cycle":"2026-05-14","from_cycle":"2026-04-16","id":"86fa87f39795","priority":"action","category":"frequency","kind":"added","summary":"frequency 122.8 (CTAF) added","source":"FRQ"},{"cycle":"2026-05-14","from_cycle":"2026-04-16","id":"2c7f26d74685","priority":"action","category":"frequency","kind":"removed","summary":"frequency 122.9 (CTAF) removed","source":"FRQ"},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"b1fe7f5793db","priority":"fyi","category":"remark","kind":"added","summary":"new remark: A controlling obstacle exceeds a 45 degree slope.","source":"APT_RMK","original":"CTLG OBSTN EXCEEDS A 45 DEG SLP."},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"04035c727f85","priority":"fyi","category":"runway","kind":"changed","summary":"runway 27: controlling obstacle changed (now 10 ft tall, 35 ft from threshold, 90 ft either side of centerline, clearance slope 0:1)","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"L","new":"B"},{"field":"DIST_FROM_THR","old":"10","new":"35"},{"field":"OBSTN_CLNC_SLOPE","old":"1","new":"0"}]}],"first_cycle":"2024-11-28","last_cycle":"2026-05-14"}