{"schema_version":1,"from_cycle":"2026-09-03","to_cycle":"2026-10-01","airport":"MT87","counts":{"action":4,"ifr":0,"fyi":2},"changes":[{"id":"47ffe2263e42","priority":"action","category":"tower","kind":"added","summary":"added (atc_base): facility type=NON-ATCT, facility id=MT87, facility name=NORTHERN MONTANA HOSPITAL, region code=ANM, primary apch radio call=SALT LAKE ARTCC, apch p provider=ZLC","source":"ATC_BASE"},{"id":"ce0c27907af4","priority":"action","category":"frequency","kind":"added","summary":"new frequency 133.4 (JUDITH MOUNTAIN RCAG)","source":"FRQ"},{"id":"6895ccb138af","priority":"action","category":"frequency","kind":"added","summary":"new frequency 285.4 (JUDITH MOUNTAIN RCAG)","source":"FRQ"},{"id":"38d127189d00","priority":"action","category":"remark","kind":"added","summary":"new tower/ATC remark: Approach and departure service provided by Salt Lake ARTCC (ZLC) on frequencies 133.4/285.4 (JUDITH MOUNTAIN RCAG).","source":"ATC_RMK","original":"APCH/DEP SVC PRVDD BY SALT LAKE ARTCC (ZLC) ON FREQS 133.4/285.4 (JUDITH MOUNTAIN RCAG)."},{"id":"3f4f960e2f25","priority":"fyi","category":"airport","kind":"changed","summary":"mag hemis: (none) -> E; notam id: (none) -> FDC","source":"APT_BASE","fields":[{"field":"MAG_HEMIS","old":"","new":"E"},{"field":"NOTAM_ID","old":"","new":"FDC"}]},{"id":"b47708daa10d","priority":"fyi","category":"remark","kind":"added","summary":"new remark: For clearance delivery contact Salt Lake ARTCC at 801-320-2568.","source":"APT_RMK","original":"FOR CD CTC SALT LAKE ARTCC AT 801-320-2568."}]}