{"schema_version":1,"airport":"TVF","entries":[{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"0243053ff87d","priority":"ifr","category":"chart","kind":"changed","summary":"approach ILS OR LOC RWY 31 redrawn (still amdt 5A)","source":"D-TPP","chart":{"code":"IAP","name":"ILS OR LOC RWY 31","amdt":"5A","pdf":"https://aeronav.faa.gov/d-tpp/2609/05201IL31.PDF"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"1543f1643424","priority":"ifr","category":"chart","kind":"changed","summary":"approach VOR RWY 31 redrawn (still amdt 8E)","source":"D-TPP","chart":{"code":"IAP","name":"VOR RWY 31","amdt":"8E","pdf":"https://aeronav.faa.gov/d-tpp/2609/05201V31.PDF"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"0eadbd39ac4f","priority":"fyi","category":"navaid","kind":"changed","summary":"TVF (Thief River Falls) navaid: simultaneous voice: yes -> no; voice call: PRINCETON RADIO -> NONE","source":"NAV_BASE","fields":[{"field":"SIMUL_VOICE_FLAG","old":"Y","new":"N"},{"field":"VOICE_CALL","old":"PRINCETON RADIO","new":"NONE"}]},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"9b2cda2bd827","priority":"fyi","category":"frequency","kind":"removed","summary":"flight service (FSS) 122.1R via the Thief River Falls outlet no longer available","source":"FRQ"},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"84d6cd72dd6b","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":"2026-03-19","from_cycle":"2026-02-19","id":"45ff45c6cf2f","priority":"action","category":"frequency","kind":"changed","summary":"sector: HIGH -> LOW","source":"FRQ","fields":[{"field":"SECTORIZATION","old":"HIGH","new":"LOW"}]},{"cycle":"2026-02-19","from_cycle":"2026-01-22","id":"fdf00e043b3b","priority":"fyi","category":"navaid","kind":"changed","summary":"TVF navaid: remark: DME UNUSBL 316-346 BYD 9 NM; 316-346 BLW 6000 FT. -> DME UNUSBL 316-330 BYD 9 NM;  316-330 BLW 6000 FT; 331-342 BYD 13 MN; 331-342 BLW 6100 FT; 343-346 BYD 57 NM; 343-346 BLW 6100 FT.","source":"NAV_RMK","fields":[{"field":"REMARK","old":"DME UNUSBL 316-346 BYD 9 NM; 316-346 BLW 6000 FT.","new":"DME UNUSBL 316-330 BYD 9 NM;  316-330 BLW 6000 FT; 331-342 BYD 13 MN; 331-342 BLW 6100 FT; 343-346 BYD 57 NM; 343-346 BLW 6100 FT."}]},{"cycle":"2026-02-19","from_cycle":"2026-01-22","id":"c238586fbb61","priority":"fyi","category":"navaid","kind":"changed","summary":"TVF navaid: remark: VOR UNUSBL 316-346 BYD 9 NM; 316-346 BLW 6000 FT. -> VOR UNUSBL 316-330 BYD 9 NM;  316-330 BLW 6000 FT; 331-342 BYD 13 MN; 331-342 BLW 6100 FT; 343-346 BYD 57 NM; 343-346 BLW 6100 FT.","source":"NAV_RMK","fields":[{"field":"REMARK","old":"VOR UNUSBL 316-346 BYD 9 NM; 316-346 BLW 6000 FT.","new":"VOR UNUSBL 316-330 BYD 9 NM;  316-330 BLW 6000 FT; 331-342 BYD 13 MN; 331-342 BLW 6100 FT; 343-346 BYD 57 NM; 343-346 BLW 6100 FT."}]},{"cycle":"2025-09-04","from_cycle":"2025-08-07","id":"9e07ddc27468","priority":"action","category":"remark","kind":"changed","summary":"remark updated: RWY 04/22 NOT AVBL FOR PART 121/PART 380 OPS WITH SKED PAX CARRYING OPS MORE THAN 9 PAX SEATS AND NON-SKED PAX CARRYING OPS MORE THAN 30 PAX SEATS.","source":"APT_RMK","original":"RWY 04/22 NOT AVBL FOR PART 121/PART 380 OPS WITH SKED PAX CARRYING OPS MORE THAN 9 PAX SEATS AND NON-SKED PAX CARRYING OPS MORE THAN 30 PAX SEATS.","fields":[{"field":"REMARK","old":"CLSD TO SKEDD ACR OPS GTR THAN 9 PAX SEATS OR UNSKED ACR OPS GTR THAN 30 PAX SEATS.","new":"RWY 04/22 NOT AVBL FOR PART 121/PART 380 OPS WITH SKED PAX CARRYING OPS MORE THAN 9 PAX SEATS AND NON-SKED PAX CARRYING OPS MORE THAN 30 PAX SEATS."}]},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"e0106a6b2e74","priority":"fyi","category":"remark","kind":"added","summary":"new remark: Available 24 hours with credit card.","source":"APT_RMK","original":"AVBL 24 HRS WITH CREDIT CARD."},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"c3fb0ba35e1a","priority":"fyi","category":"runway","kind":"changed","summary":"runway 13: controlling obstacle changed (now , clearance slope 34:1); controlling obstacle: TREES -> none","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"L","new":""},{"field":"CNTRLN_OFFSET","old":"200","new":""},{"field":"DIST_FROM_THR","old":"2200","new":""},{"field":"OBSTN_CLNC_SLOPE","old":"44","new":"34"},{"field":"OBSTN_HGT","old":"45","new":""},{"field":"OBSTN_TYPE","old":"TREES","new":""}]}],"first_cycle":"2024-09-05","last_cycle":"2026-09-03"}