{"schema_version":1,"airport":"OSC","entries":[{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"6fbaab4d7d21","priority":"ifr","category":"chart","kind":"changed","summary":"approach ILS OR LOC RWY 25 redrawn (still amdt 4A)","source":"D-TPP","chart":{"code":"IAP","name":"ILS OR LOC RWY 25","amdt":"4A","pdf":"https://aeronav.faa.gov/d-tpp/2609/00032IL25.PDF"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"3f263de00c46","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: APCH/DEP/CD SVC PRVDD BY MINNEAPOLIS ARTCC ON FREQS 125.475/269.45 (OSCODA RCAG).","source":"ATC_RMK","original":"APCH/DEP/CD SVC PRVDD BY MINNEAPOLIS ARTCC ON FREQS 125.475/269.45 (OSCODA RCAG).","fields":[{"field":"REMARK","old":"APCH/DEP SVC PRVDD BY MINNEAPOLIS ARTCC ON FREQS 125.475/269.45 (OSCODA RCAG).","new":"APCH/DEP/CD SVC PRVDD BY MINNEAPOLIS ARTCC ON FREQS 125.475/269.45 (OSCODA RCAG)."}]},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"36d879f5b1f3","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: FOR CD CTC MINNEAPOLIS ARTCC ON FREQ. IF UNA CTC MINNEAPOLIS ARTCC AT 651-463-5588.","source":"APT_RMK","original":"FOR CD CTC MINNEAPOLIS ARTCC ON FREQ. IF UNA CTC MINNEAPOLIS ARTCC AT 651-463-5588.","fields":[{"field":"REMARK","old":"FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588.","new":"FOR CD CTC MINNEAPOLIS ARTCC ON FREQ. IF UNA CTC MINNEAPOLIS ARTCC AT 651-463-5588."}]},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"bf973c7f29eb","priority":"fyi","category":"frequency","kind":"changed","summary":"remark: APCH/DEP SVC PRVDD BY MINNEAPOLIS ARTCC ON FREQS 125.475/269.45 (OSCODA RCAG). -> APCH/DEP/CD SVC PRVDD BY MINNEAPOLIS ARTCC ON FREQS 125.475/269.45 (OSCODA RCAG).","source":"FRQ","fields":[{"field":"REMARK","old":"APCH/DEP SVC PRVDD BY MINNEAPOLIS ARTCC ON FREQS 125.475/269.45 (OSCODA RCAG).","new":"APCH/DEP/CD SVC PRVDD BY MINNEAPOLIS ARTCC ON FREQS 125.475/269.45 (OSCODA RCAG)."}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"004f66884125","priority":"action","category":"weather","kind":"changed","summary":"weather station type: AWOS-3 -> AWOS-3P","source":"AWOS","fields":[{"field":"ASOS_AWOS_TYPE","old":"AWOS-3","new":"AWOS-3P"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"489afb54456e","priority":"action","category":"frequency","kind":"changed","summary":"frequency 118.7 now listed for OSC AWOS-3P (was OSC AWOS-3); served facility type: AWOS-3 -> AWOS-3P","source":"FRQ","fields":[{"field":"FREQ_USE","old":"OSC AWOS-3","new":"OSC AWOS-3P"},{"field":"SERVICED_SITE_TYPE","old":"AWOS-3","new":"AWOS-3P"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"348b0e9b0725","priority":"action","category":"runway","kind":"changed","summary":"runway 07/25: length: 11800 -> 11801 ft","source":"APT_RWY","fields":[{"field":"RWY_LEN","old":"11800","new":"11801"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"d3a35c224081","priority":"action","category":"navaid","kind":"changed","summary":"runway 25: approach bearing: 245 -> 245.17° magnetic; operator: F-FEDERAL AVIATION ADMIN -> F-FEDERAL AVIATION ADMINISTRATION; owner: A-AIR FORCE -> F-FEDERAL AVIATION ADMINISTRATION; ILS runway length: 11800 -> 11801 ft","source":"ILS_BASE","fields":[{"field":"APCH_BEAR","old":"245","new":"245.17"},{"field":"OPERATOR","old":"F-FEDERAL AVIATION ADMIN","new":"F-FEDERAL AVIATION ADMINISTRATION"},{"field":"OWNER","old":"A-AIR FORCE","new":"F-FEDERAL AVIATION ADMINISTRATION"},{"field":"RWY_LEN","old":"11800","new":"11801"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"1734bceffd6e","priority":"action","category":"navaid","kind":"changed","summary":"runway 25: remark: LOC & GS UNMONITORED. -> ILS UNMON.","source":"ILS_RMK","fields":[{"field":"REMARK","old":"LOC & GS UNMONITORED.","new":"ILS UNMON."}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"de4d4fb5ddaa","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: FOR SVC CTC FBO 989-739-8486.","source":"APT_RMK","original":"FOR SVC CTC FBO 989-739-8486.","fields":[{"field":"REMARK","old":"FOR SVC WKENDS CALL FBO AT 989-739-8486.","new":"FOR SVC CTC FBO 989-739-8486."}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"16166478116f","priority":"fyi","category":"runway","kind":"changed","summary":"runway 07: controlling obstacle changed (now 83 ft tall, 2843 ft from threshold, 809 ft left of centerline, clearance slope 31:1); runway end elevation: 632.8 -> 633 ft MSL; touchdown zone elevation: 633.1 -> 633 ft MSL","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"R","new":"L"},{"field":"CNTRLN_OFFSET","old":"697","new":"809"},{"field":"DIST_FROM_THR","old":"1557","new":"2843"},{"field":"OBSTN_CLNC_SLOPE","old":"26","new":"31"},{"field":"OBSTN_HGT","old":"51","new":"83"},{"field":"RWY_END_ELEV","old":"632.8","new":"633"},{"field":"TDZ_ELEV","old":"633.1","new":"633"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"ac0db152b2dc","priority":"fyi","category":"runway","kind":"changed","summary":"runway 25: controlling obstacle changed (now 71 ft tall, 3574 ft from threshold, 981 ft right of centerline, clearance slope 47:1); controlling obstacle: none -> TREE; runway end elevation: 619.7 -> 619.8 ft MSL; touchdown zone elevation: 624 -> 623.7 ft MSL","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"","new":"R"},{"field":"CNTRLN_OFFSET","old":"","new":"981"},{"field":"DIST_FROM_THR","old":"","new":"3574"},{"field":"OBSTN_CLNC_SLOPE","old":"50","new":"47"},{"field":"OBSTN_HGT","old":"","new":"71"},{"field":"OBSTN_TYPE","old":"","new":"TREE"},{"field":"RWY_END_ELEV","old":"619.7","new":"619.8"},{"field":"TDZ_ELEV","old":"624","new":"623.7"}]}],"first_cycle":"2025-10-30","last_cycle":"2026-09-03"}