{"schema_version":1,"airport":"31MA","entries":[{"cycle":"2026-06-11","from_cycle":"2026-05-14","id":"d87eb89eac72","priority":"action","category":"frequency","kind":"added","summary":"frequency 122.9 (CTAF) added","source":"FRQ"},{"cycle":"2026-06-11","from_cycle":"2026-05-14","id":"26e1486c23ca","priority":"action","category":"runway","kind":"changed","summary":"runway 15/33: length: 1300 -> 1100 ft; width: 150 -> 72 ft","source":"APT_RWY","fields":[{"field":"RWY_LEN","old":"1300","new":"1100"},{"field":"RWY_WIDTH","old":"150","new":"72"}]},{"cycle":"2026-06-11","from_cycle":"2026-05-14","id":"5c5c02c34ddf","priority":"fyi","category":"runway","kind":"changed","summary":"runway 15: runway end elevation: none -> 470 ft MSL","source":"APT_RWY_END","fields":[{"field":"RWY_END_ELEV","old":"","new":"470"}]},{"cycle":"2026-06-11","from_cycle":"2026-05-14","id":"03739a40ca74","priority":"fyi","category":"runway","kind":"changed","summary":"runway 33: runway end elevation: none -> 460 ft MSL","source":"APT_RWY_END","fields":[{"field":"RWY_END_ELEV","old":"","new":"460"}]},{"cycle":"2026-05-14","from_cycle":"2026-04-16","id":"1aa46973360f","priority":"action","category":"remark","kind":"added","summary":"new remark: PPR RQRD.","source":"APT_RMK","original":"PPR RQRD."},{"cycle":"2026-05-14","from_cycle":"2026-04-16","id":"b646ae646a44","priority":"fyi","category":"remark","kind":"added","summary":"new remark: LND RWY 33; TKOF RWY 15.","source":"APT_RMK","original":"LND RWY 33; TKOF RWY 15."},{"cycle":"2026-05-14","from_cycle":"2026-04-16","id":"9e0fa9ad342f","priority":"fyi","category":"remark","kind":"added","summary":"new remark: TREES RWY 15.","source":"APT_RMK","original":"TREES RWY 15."}],"first_cycle":"2026-05-14","last_cycle":"2026-06-11"}