{"schema_version":1,"airport":"SPF","entries":[{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"7cfd6e3f6942","priority":"fyi","category":"frequency","kind":"removed","summary":"flight service (FSS) 122.5 via the Spearfish outlet no longer available","source":"FRQ"},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"7a19782f411a","priority":"ifr","category":"chart","kind":"changed","summary":"approach RNAV (GPS) RWY 13 redrawn (still amdt 0D)","source":"D-TPP","chart":{"code":"IAP","name":"RNAV (GPS) RWY 13","amdt":"0D","pdf":"https://aeronav.faa.gov/d-tpp/2607/00592R13.PDF"}},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"7b1660358ac0","priority":"ifr","category":"chart","kind":"changed","summary":"approach RNAV (GPS) RWY 31 redrawn (still amdt 1)","source":"D-TPP","chart":{"code":"IAP","name":"RNAV (GPS) RWY 31","amdt":"1","pdf":"https://aeronav.faa.gov/d-tpp/2607/00592R31.PDF"}},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"9beab8265515","priority":"fyi","category":"chart","kind":"added","summary":"airport diagram added","source":"D-TPP","chart":{"code":"APD","name":"AIRPORT DIAGRAM","amdt":"","pdf":"https://aeronav.faa.gov/d-tpp/2607/00592AD.PDF"}},{"cycle":"2025-12-25","from_cycle":"2025-11-27","id":"a9ac5fbf465a","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":"27","new":""},{"field":"DIST_FROM_THR","old":"468","new":""},{"field":"OBSTN_CLNC_SLOPE","old":"16","new":"20"},{"field":"OBSTN_HGT","old":"29","new":""},{"field":"OBSTN_TYPE","old":"TREE","new":""}]},{"cycle":"2025-12-25","from_cycle":"2025-11-27","id":"22d43470ee89","priority":"fyi","category":"runway","kind":"changed","summary":"runway 26: controlling obstacle changed (now , clearance slope 20:1)","source":"APT_RWY_END","fields":[{"field":"OBSTN_CLNC_SLOPE","old":"50","new":"20"}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"480f6e91b248","priority":"fyi","category":"runway","kind":"changed","summary":"runway 04/22: pavement now in excellent condition","source":"APT_RWY","fields":[{"field":"COND","old":"GOOD","new":"EXCELLENT"}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"67078e3156de","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"}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"81e93d1ace7e","priority":"fyi","category":"runway","kind":"changed","summary":"runway 08: controlling obstacle changed (now 29 ft tall, 468 ft from threshold, 27 ft left of centerline, clearance slope 16:1)","source":"APT_RWY_END","fields":[{"field":"OBSTN_CLNC_SLOPE","old":"18","new":"16"},{"field":"OBSTN_HGT","old":"26","new":"29"}]},{"cycle":"2025-05-15","from_cycle":"2025-04-17","id":"05dfbbce97c6","priority":"fyi","category":"airport","kind":"changed","summary":"cold temperature airport (altitude correction at or below): none -> -30C","source":"APT_BASE","fields":[{"field":"CTA","old":"","new":"-30C"}]},{"cycle":"2025-05-15","from_cycle":"2025-04-17","id":"6479af09d0b3","priority":"fyi","category":"remark","kind":"added","summary":"new remark: COLD TEMPERATURE AIRPORT. ALTITUDE CORRECTION REQUIRED AT OR BELOW -30C.","source":"APT_RMK","original":"COLD TEMPERATURE AIRPORT. ALTITUDE CORRECTION REQUIRED AT OR BELOW -30C."},{"cycle":"2024-10-03","from_cycle":"2024-09-05","id":"da08b44c4d0a","priority":"fyi","category":"airport","kind":"changed","summary":"airport phone number changed to 701-590-2828; name changed: Ray Jilek -> Channing Wagner","source":"APT_CON","fields":[{"field":"NAME","old":"RAY JILEK","new":"CHANNING WAGNER"},{"field":"PHONE_NO","old":"605-642-4112","new":"701-590-2828"}]}],"first_cycle":"2024-10-03","last_cycle":"2026-09-03"}