{"schema_version":1,"airport":"OI51","entries":[{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"cff673f4c254","priority":"action","category":"frequency","kind":"added","summary":"frequency 122.9 (CTAF) added","source":"FRQ"},{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"afad814290c7","priority":"fyi","category":"airport","kind":"changed","summary":"direction from the city's business district: N -> ESE; distance from the city's business district: 0 -> 4","source":"APT_BASE","fields":[{"field":"DIRECTION_CODE","old":"N","new":"ESE"},{"field":"DIST_CITY_TO_AIRPORT","old":"0","new":"4"}]},{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"bf137cd3b549","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: 45 FT ANT, 60 FT SE OF PAD; 14 FT MECHL EQPT ROOM, 56 FT SW OF PAD.","source":"APT_RMK","original":"45 FT ANT, 60 FT SE OF PAD; 14 FT MECHL EQPT ROOM, 56 FT SW OF PAD.","fields":[{"field":"REMARK","old":"45' ANT 60' SE OF PAD; IN ADDITION, 14' MECH EQUIP RM 56' SW OF PAD.","new":"45 FT ANT, 60 FT SE OF PAD; 14 FT MECHL EQPT ROOM, 56 FT SW OF PAD."}]},{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"686000b1ea74","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: For CD contact Cleveland approach at 216-352-2323.","source":"APT_RMK","original":"FOR CD CTC CLEVELAND APCH AT 216-352-2323.","fields":[{"field":"REMARK","old":"FOR CD CTC CLEVELAND APCH AT 216-352-2323","new":"FOR CD CTC CLEVELAND APCH AT 216-352-2323."}]},{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"424a42686cc1","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: VFR USE ONLY.","source":"APT_RMK","original":"VFR USE ONLY.","fields":[{"field":"REMARK","old":"E111:VFR USE ONLY","new":"VFR USE ONLY."}]}],"first_cycle":"2025-08-07","last_cycle":"2025-08-07"}