{"schema_version":1,"airport":"C25","entries":[{"cycle":"2026-08-06","from_cycle":"2026-07-09","id":"4080c28abcd9","priority":"ifr","category":"chart","kind":"changed","summary":"minimums page (TAKEOFF MINIMUMS) changed","source":"D-TPP","chart":{"code":"MIN","name":"TAKEOFF MINIMUMS","amdt":"","pdf":"https://aeronav.faa.gov/d-tpp/2608/NC3TO.PDF"}},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"f7474464df29","priority":"ifr","category":"chart","kind":"changed","summary":"minimums page (TAKEOFF MINIMUMS) changed","source":"D-TPP","chart":{"code":"MIN","name":"TAKEOFF MINIMUMS","amdt":"","pdf":"https://aeronav.faa.gov/d-tpp/2607/NC3TO.PDF"}},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"5f79deb7cf3c","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":"deb1c69c937d","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":"229b82c16785","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 RCAG) 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 RCAG) 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 RCAG) WHEN DES MOINES APCH CTL CLSD."}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"38bbcd0e7041","priority":"action","category":"remark","kind":"changed","summary":"remark updated: FOR CD CTC DES MOINES APCH AT 515-974-8016. WHEN DES MOINES APCH 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 APCH 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 APCH CLSD, FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588."}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"2e57fd635297","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":"74e02123ad71","priority":"fyi","category":"frequency","kind":"added","summary":"frequency 251.15 now also listed for WATERLOO RCAG","source":"FRQ"},{"cycle":"2025-02-20","from_cycle":"2025-01-23","id":"58b809378a95","priority":"action","category":"tower","kind":"changed","summary":"secondary approach control: CHICAGO ARTCC (APCH/S CALL IS CHICAGO ARTCC) -> MINNEAPOLIS ARTCC (ARTCC ZMP (MINNEAPOLIS, MN)); secondary departure control: CHICAGO ARTCC (DEP/S CALL IS CHICAGO ARTCC) -> MINNEAPOLIS ARTCC (ARTCC ZMP (MINNEAPOLIS, MN))","source":"ATC_BASE","fields":[{"field":"APCH_S_PROVIDER","old":"APCH/S CALL IS CHICAGO ARTCC","new":"ARTCC ZMP (MINNEAPOLIS, MN)"},{"field":"DEP_S_PROVIDER","old":"DEP/S CALL IS CHICAGO ARTCC","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":"9594654cc6d0","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":"CLEARANCE DELIVERY PHONE: FOR CD CTC WATERLOO APCH 319-233-4835. WHEN WATERLOO APCH CLSD, 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":"73aa198709be","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":"baab727dcf95","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":"2026-08-06"}