{"schema_version":1,"airport":"LDM","entries":[{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"55cefcbddc13","priority":"fyi","category":"frequency","kind":"removed","summary":"flight service (FSS) 122.3 via the Ludington outlet no longer available","source":"FRQ"},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"afab8bc8b005","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: For clearance contact MINNEAPOLIS ARTCC at 651-463-5588.","source":"APT_RMK","original":"FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588.","fields":[{"field":"REMARK","old":"FOR CD IF UNA TO CTC ON FSS FREQ, CTC MINNEAPOLIS ARTCC AT 651-463-5588.","new":"FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588."}]},{"cycle":"2026-02-19","from_cycle":"2026-01-22","id":"6e24b54b9551","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":"2026-02-19","from_cycle":"2026-01-22","id":"37a203be4b22","priority":"action","category":"frequency","kind":"changed","summary":"frequency 119.925 now listed for LDM AWOS-3P (was LDM AWOS-3); served facility type: AWOS-3 -> AWOS-3P","source":"FRQ","fields":[{"field":"FREQ_USE","old":"LDM AWOS-3","new":"LDM AWOS-3P"},{"field":"SERVICED_SITE_TYPE","old":"AWOS-3","new":"AWOS-3P"}]},{"cycle":"2025-09-04","from_cycle":"2025-08-07","id":"03c95b90c8a3","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: Deer, large birds, and wildlife are on and near the airport.","source":"APT_RMK","original":"DEER, LRG BIRDS, & WILDLIFE ON & INVOF ARPT.","fields":[{"field":"REMARK","old":"BIRDS, DEER, & WILDLIFE ON & INVOF ARPT.","new":"DEER, LRG BIRDS, & WILDLIFE ON & INVOF ARPT."}]},{"cycle":"2025-09-04","from_cycle":"2025-08-07","id":"e1e2b287b861","priority":"fyi","category":"runway","kind":"changed","summary":"runway 01: controlling obstacle changed (now , clearance slope 20:1); controlling obstacle: TREE -> none","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"L","new":""},{"field":"CNTRLN_OFFSET","old":"264","new":""},{"field":"DIST_FROM_THR","old":"1750","new":""},{"field":"OBSTN_CLNC_SLOPE","old":"21","new":"20"},{"field":"OBSTN_HGT","old":"72","new":""},{"field":"OBSTN_TYPE","old":"TREE","new":""}]},{"cycle":"2025-09-04","from_cycle":"2025-08-07","id":"9cf677d208d8","priority":"fyi","category":"runway","kind":"changed","summary":"runway 08: controlling obstacle changed (now , clearance slope 20:1); controlling obstacle: TREE -> none","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"L","new":""},{"field":"CNTRLN_OFFSET","old":"195","new":""},{"field":"DIST_FROM_THR","old":"1438","new":""},{"field":"OBSTN_CLNC_SLOPE","old":"22","new":"20"},{"field":"OBSTN_HGT","old":"56","new":""},{"field":"OBSTN_TYPE","old":"TREE","new":""}]},{"cycle":"2025-09-04","from_cycle":"2025-08-07","id":"d7a7a1ea8b49","priority":"fyi","category":"runway","kind":"changed","summary":"runway 19: controlling obstacle changed (now 68 ft tall, 1363 ft from threshold, 265 ft left of centerline, clearance slope 17:1); controlling obstacle: none -> TREE","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"","new":"L"},{"field":"CNTRLN_OFFSET","old":"","new":"265"},{"field":"DIST_FROM_THR","old":"","new":"1363"},{"field":"OBSTN_CLNC_SLOPE","old":"20","new":"17"},{"field":"OBSTN_HGT","old":"","new":"68"},{"field":"OBSTN_TYPE","old":"","new":"TREE"}]},{"cycle":"2025-09-04","from_cycle":"2025-08-07","id":"d298583756b7","priority":"fyi","category":"runway","kind":"changed","summary":"runway 26: controlling obstacle changed (now 59 ft tall, 1375 ft from threshold, 421 ft left of centerline, clearance slope 19:1)","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"419","new":"421"},{"field":"DIST_FROM_THR","old":"1386","new":"1375"},{"field":"OBSTN_CLNC_SLOPE","old":"21","new":"19"},{"field":"OBSTN_HGT","old":"55","new":"59"}]},{"cycle":"2024-10-31","from_cycle":"2024-10-03","id":"e51ef04f0e70","priority":"fyi","category":"runway","kind":"changed","summary":"runway 08/26: surface treatment: porous friction course (PFC) -> no special surface treatment (NONE)","source":"APT_RWY","fields":[{"field":"TREATMENT_CODE","old":"PFC","new":"NONE"}]},{"cycle":"2024-10-03","from_cycle":"2024-09-05","id":"529b5e6bd524","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: Birds, deer, and wildlife are on and in the vicinity of the airport.","source":"APT_RMK","original":"BIRDS, DEER, & WILDLIFE ON & INVOF ARPT.","fields":[{"field":"REMARK","old":"BIRDS & DEER ON & INVOF ARPT.","new":"BIRDS, DEER, & WILDLIFE ON & INVOF ARPT."}]},{"cycle":"2024-10-03","from_cycle":"2024-09-05","id":"22a9b2c56699","priority":"fyi","category":"runway","kind":"changed","summary":"runway 08/26: pavement now in excellent condition","source":"APT_RWY","fields":[{"field":"COND","old":"GOOD","new":"EXCELLENT"}]}],"first_cycle":"2024-10-03","last_cycle":"2026-09-03"}