{"schema_version":1,"airport":"GPI","entries":[{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"5c387ec0acef","priority":"action","category":"remark","kind":"added","summary":"new remark: FOR CD WHEN ATCT CLSD CTC SALT LAKE ARTCC AT 801-320-2568.","source":"APT_RMK","original":"FOR CD WHEN ATCT CLSD CTC SALT LAKE ARTCC AT 801-320-2568."},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"94d60b6cd912","priority":"action","category":"remark","kind":"removed","summary":"remark removed: COMMUNICATIONS PRVDD BY GREAT FALLS RADIO ON FREQ 122.5 (LAKESIDE RCO).","source":"ATC_RMK","original":"COMMUNICATIONS PRVDD BY GREAT FALLS RADIO ON FREQ 122.5 (LAKESIDE RCO)."},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"846a0b93bd17","priority":"ifr","category":"procedure","kind":"changed","summary":"arrival/departure procedures new or updated: RIDDG, SKOTT","source":"STAR/DP","procedures":{"updated":["RIDDG","SKOTT"],"removed":[]}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"b1b8232df891","priority":"ifr","category":"chart","kind":"changed","summary":"obstacle departure SKOTT THREE (OBSTACLE) changed","source":"D-TPP","chart":{"code":"ODP","name":"SKOTT THREE (OBSTACLE)","amdt":"","pdf":"https://aeronav.faa.gov/d-tpp/2609/00887SKOTT.PDF"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"d0196a0fa65d","priority":"ifr","category":"chart","kind":"changed","summary":"departure RIDDG THREE (RNAV) changed","source":"D-TPP","chart":{"code":"DP","name":"RIDDG THREE (RNAV)","amdt":"","pdf":"https://aeronav.faa.gov/d-tpp/2609/00887RIDDG.PDF"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"cbf9145927f2","priority":"fyi","category":"frequency","kind":"removed","summary":"flight service (FSS) 122.5 via the Lakeside outlet no longer available","source":"FRQ"},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"bf4e1da85b85","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: USE CTN FOR PAJA OPS APRX 8NM SOUTH OF GLACIER PARK INTL FROM MAY THRU NOV (SR-SS) AT AND BELOW 17999 FT. CTC SALT LAKE ARTCC FOR PRCHT JUMP AREA STATUS.","source":"APT_RMK","original":"USE CTN FOR PAJA OPS APRX 8NM SOUTH OF GLACIER PARK INTL FROM MAY THRU NOV (SR-SS) AT AND BELOW 17999 FT. CTC SALT LAKE ARTCC FOR PRCHT JUMP AREA STATUS.","fields":[{"field":"REMARK","old":"CTN: SKYDIVING OPS 6 NM NW 13000 FT & BLW SR-SS JUN-SEP. PAJA STATUS - SALT LAKE ARTCC.","new":"USE CTN FOR PAJA OPS APRX 8NM SOUTH OF GLACIER PARK INTL FROM MAY THRU NOV (SR-SS) AT AND BELOW 17999 FT. CTC SALT LAKE ARTCC FOR PRCHT JUMP AREA STATUS."}]},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"a1588e94fea2","priority":"fyi","category":"airport","kind":"changed","summary":"Part 139 ARFF certification: I B -> I C","source":"APT_BASE","fields":[{"field":"FAR_139_TYPE_CODE","old":"I B","new":"I C"}]},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"a98fe34e741e","priority":"fyi","category":"runway","kind":"changed","summary":"runway 02: threshold crossing height: 50 -> 51 ft AGL","source":"APT_RWY_END","fields":[{"field":"THR_CROSSING_HGT","old":"50","new":"51"}]},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"6c462c2708af","priority":"fyi","category":"runway","kind":"changed","summary":"runway 20: threshold crossing height: 45 -> 48 ft AGL","source":"APT_RWY_END","fields":[{"field":"THR_CROSSING_HGT","old":"45","new":"48"}]},{"cycle":"2026-05-14","from_cycle":"2026-04-16","id":"a91db667c416","priority":"action","category":"remark","kind":"added","summary":"new remark: ARFF INDEX C FOR SKED INDEX C ACR OPS; OTHERWISE, ARFF INDEX B EXC 30 MIN PPR.","source":"APT_RMK","original":"ARFF INDEX C FOR SKED INDEX C ACR OPS; OTHERWISE, ARFF INDEX B EXC 30 MIN PPR."},{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"1b64862ffad1","priority":"ifr","category":"procedure","kind":"changed","summary":"arrival/departure procedures new or updated: RIDDG; removed: ANGIL","source":"STAR/DP","procedures":{"updated":["RIDDG"],"removed":["ANGIL"]}},{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"98d7e95b51d2","priority":"fyi","category":"airport","kind":"changed","summary":"cold temperature airport (altitude correction at or below): -15C -> -14C","source":"APT_BASE","fields":[{"field":"CTA","old":"-15C","new":"-14C"}]},{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"eec513fd9dec","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: COLD TEMPERATURE AIRPORT. ALTITUDE CORRECTION REQUIRED AT OR BELOW -14C.","source":"APT_RMK","original":"COLD TEMPERATURE AIRPORT. ALTITUDE CORRECTION REQUIRED AT OR BELOW -14C.","fields":[{"field":"REMARK","old":"COLD TEMPERATURE AIRPORT. ALTITUDE CORRECTION REQUIRED AT OR BELOW -15C.","new":"COLD TEMPERATURE AIRPORT. ALTITUDE CORRECTION REQUIRED AT OR BELOW -14C."}]},{"cycle":"2025-03-20","from_cycle":"2025-02-20","id":"a4fe0bb5d63e","priority":"action","category":"weather","kind":"changed","summary":"AWOS/ASOS phone number changed to 406-233-0175","source":"AWOS","fields":[{"field":"PHONE_NO","old":"406-756-8879","new":"406-233-0175"}]},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"93ac53e38ecd","priority":"action","category":"remark","kind":"changed","summary":"remark updated: Activate medium intensity approach lighting system runway 02; runway end identifier lights runway 20; high intensity runway lights runway 02/20; medium intensity runway lights runway 12/30 on common traffic advisory frequency; precision approach path indicator runway 02, 20 and 30 operating continuously.","source":"APT_RMK","original":"ACTVT MALSR RWY 02; REIL RWY 20; HIRL RWY 02/20; MIRL RWY 12/30 - CTAF.  PAPI RWY 02, 20 & 30 OPR CONSLY.","fields":[{"field":"REMARK","old":"ACTVT HIRL RY 02/20, MIRL RY 12/30, MALSR RY 02, & REIL RY 20 - CTAF.  RY 02, RY 20 AND RY 30 PAPIS OPR CONTINUOUSLY.","new":"ACTVT MALSR RWY 02; REIL RWY 20; HIRL RWY 02/20; MIRL RWY 12/30 - CTAF.  PAPI RWY 02, 20 & 30 OPR CONSLY."}]},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"16f6d18bce0a","priority":"action","category":"remark","kind":"changed","summary":"remark updated: CLSD TO UNSKED ACR OPS MORE THAN 30 PAX SEATS EXC PPR - AMGR.","source":"APT_RMK","original":"CLSD TO UNSKED ACR OPS MORE THAN 30 PAX SEATS EXC PPR - AMGR.","fields":[{"field":"REMARK","old":"CLSD TO UNSKED ACR OPNS WITH MORE THAN 30 PSGR SEATS EXCP PPR CALL AMGR 406-257-5994.","new":"CLSD TO UNSKED ACR OPS MORE THAN 30 PAX SEATS EXC PPR - AMGR."}]},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"345fd690fd8c","priority":"action","category":"frequency","kind":"changed","summary":"remark: ACTVT HIRL RY 02/20, MIRL RY 12/30, MALSR RY 02, & REIL RY 20 - CTAF.  RY 02, RY 20 AND RY 30 PAPIS OPR CONTINUOUSLY. -> ACTVT MALSR RWY 02; REIL RWY 20; HIRL RWY 02/20; MIRL RWY 12/30 - CTAF.  PAPI RWY 02, 20 & 30 OPR CONSLY.","source":"FRQ","fields":[{"field":"REMARK","old":"ACTVT HIRL RY 02/20, MIRL RY 12/30, MALSR RY 02, & REIL RY 20 - CTAF.  RY 02, RY 20 AND RY 30 PAPIS OPR CONTINUOUSLY.","new":"ACTVT MALSR RWY 02; REIL RWY 20; HIRL RWY 02/20; MIRL RWY 12/30 - CTAF.  PAPI RWY 02, 20 & 30 OPR CONSLY."}]},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"a9c773b5945a","priority":"fyi","category":"airport","kind":"changed","summary":"bottled oxygen: none -> none","source":"APT_BASE","fields":[{"field":"BOTTLED_OXY_TYPE","old":"NONE","new":""}]},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"93e274914a63","priority":"fyi","category":"remark","kind":"added","summary":"new remark: CTN: SKYDIVING OPS 6 NM NW 13000 FT & BLW SR-SS JUN-SEP. PAJA STATUS - SALT LAKE ARTCC.","source":"APT_RMK","original":"CTN: SKYDIVING OPS 6 NM NW 13000 FT & BLW SR-SS JUN-SEP. PAJA STATUS - SALT LAKE ARTCC."},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"a6a8e9219aaa","priority":"fyi","category":"remark","kind":"added","summary":"new remark: Caution: visual flight rules traffic operations occur at Kalispell City Airport 8 nautical miles south and Whitefish Airport 6 nautical miles northwest.","source":"APT_RMK","original":"CTN: VFR TFC OPS AT KALISPELL CITY ARPT 8 NM S & WHITEFISH ARPT 6 NM NW."}],"first_cycle":"2024-11-28","last_cycle":"2026-09-03"}