{"schema_version":1,"airport":"IA50","entries":[{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"1cafc48cedc5","priority":"action","category":"tower","kind":"changed","summary":"approach/departure control now provided by DSM (was ALO); approach/departure control: WATERLOO (ALO) -> DES MOINES (DSM); secondary approach/departure control: ARTCC ZMP (MINNEAPOLIS, MN) (special) -> ZMP (ARTCC)","source":"ATC_BASE","fields":[{"field":"APCH_P_PROVIDER","old":"ALO","new":"DSM"},{"field":"APCH_S_PROVIDER","old":"ARTCC ZMP (MINNEAPOLIS, MN)","new":"ZMP"},{"field":"APCH_S_PROV_TYPE_CD","old":"S","new":"C"},{"field":"DEP_P_PROVIDER","old":"ALO","new":"DSM"},{"field":"DEP_S_PROVIDER","old":"ARTCC ZMP (MINNEAPOLIS, MN)","new":"ZMP"},{"field":"DEP_S_PROV_TYPE_CD","old":"S","new":"C"},{"field":"PRIMARY_APCH_RADIO_CALL","old":"WATERLOO","new":"DES MOINES"},{"field":"PRIMARY_DEP_RADIO_CALL","old":"WATERLOO","new":"DES MOINES"}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"e4d08d7be017","priority":"action","category":"frequency","kind":"changed","summary":"frequency now provided by DSM (was ALO); approach control radio call: WATERLOO -> DES MOINES","source":"FRQ","fields":[{"field":"FACILITY","old":"ALO","new":"DSM"},{"field":"FAC_NAME","old":"WATERLOO RGNL","new":"DES MOINES INTL"},{"field":"PRIMARY_APPROACH_RADIO_CALL","old":"WATERLOO","new":"DES MOINES"}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"d5da42b63863","priority":"action","category":"remark","kind":"changed","summary":"remark updated: APCH/DEP SVC PRVDD BY MINNEAPOLIS ARTCC ON FREQS 118.9/251.15 (REMOTED FROM WATERLOO) WHEN DES MOINES APCH CTL CLSD.","source":"ATC_RMK","original":"APCH/DEP SVC PRVDD BY MINNEAPOLIS ARTCC ON FREQS 118.9/251.15 (REMOTED FROM WATERLOO) WHEN DES MOINES APCH CTL CLSD.","fields":[{"field":"REMARK","old":"APCH/DEP SVC PRVDD BY MINNEAPOLIS ARTCC ON FREQ 118.9 (REMOTED FROM WATERLOO) WHEN WATERLOO APCH CTL CLSD.","new":"APCH/DEP SVC PRVDD BY MINNEAPOLIS ARTCC ON FREQS 118.9/251.15 (REMOTED FROM WATERLOO) WHEN DES MOINES APCH CTL CLSD."}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"bd9a27b50e40","priority":"action","category":"remark","kind":"changed","summary":"remark updated: FOR CD CTC DES MOINES APCH AT 515-974-8016. WHEN DES MOINES APP CLSD, FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588.","source":"APT_RMK","original":"FOR CD CTC DES MOINES APCH AT 515-974-8016. WHEN DES MOINES APP CLSD, FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588.","fields":[{"field":"REMARK","old":"FOR CD CTC WATERLOO APCH 319-233-4835. WHEN WATERLOO APCH CLSD, FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588.","new":"FOR CD CTC DES MOINES APCH AT 515-974-8016. WHEN DES MOINES APP CLSD, FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588."}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"515962f29ca4","priority":"fyi","category":"frequency","kind":"added","summary":"frequency 118.9 now also listed for WATERLOO RCAG","source":"FRQ"},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"0640a42f831e","priority":"fyi","category":"frequency","kind":"added","summary":"frequency 251.15 now also listed for WATERLOO RCAG","source":"FRQ"},{"cycle":"2025-05-15","from_cycle":"2025-04-17","id":"1f6e2e212d54","priority":"action","category":"frequency","kind":"added","summary":"frequency 122.9 (CTAF) added","source":"FRQ"},{"cycle":"2025-02-20","from_cycle":"2025-01-23","id":"9728c95f0f72","priority":"action","category":"tower","kind":"changed","summary":"secondary approach/departure control: CHICAGO ARTCC (ARTCC ZAU (CHICAGO, IL)) -> MINNEAPOLIS ARTCC (ARTCC ZMP (MINNEAPOLIS, MN))","source":"ATC_BASE","fields":[{"field":"APCH_S_PROVIDER","old":"ARTCC ZAU (CHICAGO, IL)","new":"ARTCC ZMP (MINNEAPOLIS, MN)"},{"field":"DEP_S_PROVIDER","old":"ARTCC ZAU (CHICAGO, IL)","new":"ARTCC ZMP (MINNEAPOLIS, MN)"},{"field":"SECONDARY_APCH_RADIO_CALL","old":"CHICAGO ARTCC","new":"MINNEAPOLIS ARTCC"},{"field":"SECONDARY_DEP_RADIO_CALL","old":"CHICAGO ARTCC","new":"MINNEAPOLIS ARTCC"}]},{"cycle":"2025-02-20","from_cycle":"2025-01-23","id":"9e01c873c378","priority":"action","category":"remark","kind":"changed","summary":"remark updated: FOR CD CTC WATERLOO APCH 319-233-4835. WHEN WATERLOO APCH CLSD, FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588.","source":"APT_RMK","original":"FOR CD CTC WATERLOO APCH 319-233-4835. WHEN WATERLOO APCH CLSD, FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588.","fields":[{"field":"REMARK","old":"FOR CD CTC CHICAGO ARTCC AT 630-906-8921.","new":"FOR CD CTC WATERLOO APCH 319-233-4835. WHEN WATERLOO APCH CLSD, FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588."}]},{"cycle":"2025-02-20","from_cycle":"2025-01-23","id":"7cad7ac30963","priority":"fyi","category":"airport","kind":"changed","summary":"responsible ARTCC name: CHICAGO -> MINNEAPOLIS; ARTCC computer identifier: ZCG -> ZCP; responsible ARTCC: ZAU -> ZMP","source":"APT_BASE","fields":[{"field":"ARTCC_NAME","old":"CHICAGO","new":"MINNEAPOLIS"},{"field":"COMPUTER_ID","old":"ZCG","new":"ZCP"},{"field":"RESP_ARTCC_ID","old":"ZAU","new":"ZMP"}]},{"cycle":"2025-02-20","from_cycle":"2025-01-23","id":"dacd7fb7cd19","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: APCH/DEP SVC PRVDD BY MINNEAPOLIS ARTCC ON FREQ 118.9 (REMOTED FROM WATERLOO) WHEN WATERLOO APCH CTL CLSD.","source":"ATC_RMK","original":"APCH/DEP SVC PRVDD BY MINNEAPOLIS ARTCC ON FREQ 118.9 (REMOTED FROM WATERLOO) WHEN WATERLOO APCH CTL CLSD.","fields":[{"field":"REMARK","old":"APCH/DEP SVC PRVDD BY CHICAGO ARTCC ON FREQS 118.9 (REMOTED FROM WATERLOO) WHEN WATERLOO APCH CTL CLSD.","new":"APCH/DEP SVC PRVDD BY MINNEAPOLIS ARTCC ON FREQ 118.9 (REMOTED FROM WATERLOO) WHEN WATERLOO APCH CTL CLSD."}]}],"first_cycle":"2025-02-20","last_cycle":"2025-10-02"}