{"schema_version":1,"airport":"IMT","entries":[{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"46b60d0da96c","priority":"ifr","category":"chart","kind":"changed","summary":"approach ILS OR LOC RWY 01 redrawn (still amdt 14A)","source":"D-TPP","chart":{"code":"IAP","name":"ILS OR LOC RWY 01","amdt":"14A","pdf":"https://aeronav.faa.gov/d-tpp/2609/05347IL1.PDF"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"d8ffa152f636","priority":"ifr","category":"chart","kind":"changed","summary":"approach RNAV (GPS) RWY 01 redrawn (still amdt 0E)","source":"D-TPP","chart":{"code":"IAP","name":"RNAV (GPS) RWY 01","amdt":"0E","pdf":"https://aeronav.faa.gov/d-tpp/2609/05347R1.PDF"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"01d32b1002de","priority":"ifr","category":"chart","kind":"changed","summary":"approach RNAV (GPS) RWY 19 redrawn (still amdt 1)","source":"D-TPP","chart":{"code":"IAP","name":"RNAV (GPS) RWY 19","amdt":"1","pdf":"https://aeronav.faa.gov/d-tpp/2609/05347R19.PDF"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"58de5118c461","priority":"fyi","category":"chart","kind":"changed","summary":"airport diagram changed","source":"D-TPP","chart":{"code":"APD","name":"AIRPORT DIAGRAM","amdt":"","pdf":"https://aeronav.faa.gov/d-tpp/2609/05347AD.PDF"}},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"3c359bf3610a","priority":"fyi","category":"airport","kind":"changed","summary":"distance from the city's business district: 3 -> 2","source":"APT_BASE","fields":[{"field":"DIST_CITY_TO_AIRPORT","old":"3","new":"2"}]},{"cycle":"2026-06-11","from_cycle":"2026-05-14","id":"8d041cf5984e","priority":"action","category":"navaid","kind":"changed","summary":"runway 01: back course: usable -> none","source":"ILS_BASE","fields":[{"field":"BK_COURSE_STATUS_CODE","old":"Y","new":""}]},{"cycle":"2026-06-11","from_cycle":"2026-05-14","id":"6c00d182e5a2","priority":"fyi","category":"navaid","kind":"changed","summary":"runway 01: remark: AUTOPILOT CPD APCH NA BLW 2110 FT MSL. -> AUTOPILOT CPD APCH NA BLW 2110 FT.","source":"ILS_RMK","fields":[{"field":"REMARK","old":"AUTOPILOT CPD APCH NA BLW 2110 FT MSL.","new":"AUTOPILOT CPD APCH NA BLW 2110 FT."}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"d41a46251e46","priority":"ifr","category":"navaid","kind":"added","summary":"new ILS RWY 01 remark: AUTOPILOT CPD APCH NA BLW 2110 FT MSL.","source":"ILS_RMK","original":"AUTOPILOT CPD APCH NA BLW 2110 FT MSL."},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"ee227257f3c8","priority":"fyi","category":"navaid","kind":"changed","summary":"IMT navaid: remark: DME UNUSBL 005T-015T WI 11 NM BLW 3400 FT; 020T-140T BLW 10000 FT; 140T-195T BYD 30 NM BLW 2900 FT; 140T-195T BYD 35 NM BLW 4000 FT; 141T-220T BYD 20 NM BLW 2900 FT; 221T-315T BYD 15 NM BLW 4000 FT; 316T-019T BYD 20 NM BLW 5000 FT. -> DME UNUSBL 025T-070T; 070T-145T BLW 9000 FT; 220T-355T BLW 10000 FT.","source":"NAV_RMK","fields":[{"field":"REMARK","old":"DME UNUSBL 005T-015T WI 11 NM BLW 3400 FT; 020T-140T BLW 10000 FT; 140T-195T BYD 30 NM BLW 2900 FT; 140T-195T BYD 35 NM BLW 4000 FT; 141T-220T BYD 20 NM BLW 2900 FT; 221T-315T BYD 15 NM BLW 4000 FT; 316T-019T BYD 20 NM BLW 5000 FT.","new":"DME UNUSBL 025T-070T; 070T-145T BLW 9000 FT; 220T-355T BLW 10000 FT."}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"ff949aeb280c","priority":"action","category":"navaid","kind":"changed","summary":"IMT (Iron Mountain) navaid: frequency changed: 111.2 -> 115.35; TACAN channel: 49X -> 100Y","source":"NAV_BASE","fields":[{"field":"CHAN","old":"49X","new":"100Y"},{"field":"FREQ","old":"111.2","new":"115.35"}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"9ccd5fbdb8c5","priority":"action","category":"frequency","kind":"removed","summary":"frequency 111.2/49X (IMT DME) removed","source":"FRQ"},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"4e2c6e09d307","priority":"action","category":"frequency","kind":"added","summary":"frequency 115.35/100Y (IMT DME) added","source":"FRQ"},{"cycle":"2025-09-04","from_cycle":"2025-08-07","id":"90e8cd8f24c1","priority":"action","category":"remark","kind":"changed","summary":"remark updated: RWY 13/31 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 13/31 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 13/31 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":"2025-07-10","from_cycle":"2025-06-12","id":"05a7291beb0d","priority":"action","category":"airport","kind":"changed","summary":"airport attendance hours changed: 0530-2200 -> 0600-2100","source":"APT_ATT","fields":[{"field":"HOUR","old":"0530-2200","new":"0600-2100"}]},{"cycle":"2025-07-10","from_cycle":"2025-06-12","id":"5c6fd37669f1","priority":"fyi","category":"navaid","kind":"changed","summary":"IMT navaid: remark: DME UNUSBL 020T-140T BLW 10000 FT; 140T-195T BYD 30 NM BLW 2900 FT; 140T-195T BYD 35 NM BLW 4000 FT; 141T-220T BYD 20 NM BLW 2900 FT; 221T-315T BYD 15 NM BLW 4000 FT; 316T-019T BYD 20 NM BLW 5000 FT. -> DME UNUSBL 005T-015T WI 11 NM BLW 3400 FT; 020T-140T BLW 10000 FT; 140T-195T BYD 30 NM BLW 2900 FT; 140T-195T BYD 35 NM BLW 4000 FT; 141T-220T BYD 20 NM BLW 2900 FT; 221T-315T BYD 15 NM BLW 4000 FT; 316T-019T BYD 20 NM BLW 5000 FT.","source":"NAV_RMK","fields":[{"field":"REMARK","old":"DME UNUSBL 020T-140T BLW 10000 FT; 140T-195T BYD 30 NM BLW 2900 FT; 140T-195T BYD 35 NM BLW 4000 FT; 141T-220T BYD 20 NM BLW 2900 FT; 221T-315T BYD 15 NM BLW 4000 FT; 316T-019T BYD 20 NM BLW 5000 FT.","new":"DME UNUSBL 005T-015T WI 11 NM BLW 3400 FT; 020T-140T BLW 10000 FT; 140T-195T BYD 30 NM BLW 2900 FT; 140T-195T BYD 35 NM BLW 4000 FT; 141T-220T BYD 20 NM BLW 2900 FT; 221T-315T BYD 15 NM BLW 4000 FT; 316T-019T BYD 20 NM BLW 5000 FT."}]},{"cycle":"2025-04-17","from_cycle":"2025-03-20","id":"0fdabdf760d2","priority":"action","category":"navaid","kind":"changed","summary":"IMT (Iron Mountain) navaid: now a DME (was a VOR/DME); status: OPERATIONAL IFR -> OPERATIONAL RESTRICTED; latitude/longitude survey accuracy: NOS (6) -> none","source":"NAV_BASE","fields":[{"field":"NAV_STATUS","old":"OPERATIONAL IFR","new":"OPERATIONAL RESTRICTED"},{"field":"NAV_TYPE","old":"VOR/DME","new":"DME"},{"field":"SURVEY_ACCURACY_CODE","old":"6","new":""}]},{"cycle":"2025-04-17","from_cycle":"2025-03-20","id":"e5ed31ec1aab","priority":"action","category":"navaid","kind":"changed","summary":"IMT navaid: now a DME (was a VOR/DME); remark: DME UNUSBL 015-035 BYD 15 NM BLW 6000 FT; 036-064 BYD 12 NM; 066-139 BYD 12 NM BLW 9000 FT; 140-195 BYD 30 NM BLW 2900 FT; 140-195 BYD 35 NM BLW 4000 FT; 232-014 BYD 22 NM BLW 4000 FT. -> DME UNUSBL 020T-140T BLW 10000 FT; 140T-195T BYD 30 NM BLW 2900 FT; 140T-195T BYD 35 NM BLW 4000 FT; 141T-220T BYD 20 NM BLW 2900 FT; 221T-315T BYD 15 NM BLW 4000 FT; 316T-019T BYD 20 NM BLW 5000 FT.","source":"NAV_RMK","fields":[{"field":"NAV_TYPE","old":"VOR/DME","new":"DME"},{"field":"REMARK","old":"DME UNUSBL 015-035 BYD 15 NM BLW 6000 FT; 036-064 BYD 12 NM; 066-139 BYD 12 NM BLW 9000 FT; 140-195 BYD 30 NM BLW 2900 FT; 140-195 BYD 35 NM BLW 4000 FT; 232-014 BYD 22 NM BLW 4000 FT.","new":"DME UNUSBL 020T-140T BLW 10000 FT; 140T-195T BYD 30 NM BLW 2900 FT; 140T-195T BYD 35 NM BLW 4000 FT; 141T-220T BYD 20 NM BLW 2900 FT; 221T-315T BYD 15 NM BLW 4000 FT; 316T-019T BYD 20 NM BLW 5000 FT."}]},{"cycle":"2025-04-17","from_cycle":"2025-03-20","id":"a5e291f22110","priority":"action","category":"frequency","kind":"changed","summary":"frequency 111.2/49X now listed for IMT DME (was IMT VOR/DME); served facility type: VOR/DME -> DME","source":"FRQ","fields":[{"field":"FREQ_USE","old":"IMT VOR/DME","new":"IMT DME"},{"field":"SERVICED_SITE_TYPE","old":"VOR/DME","new":"DME"}]},{"cycle":"2025-04-17","from_cycle":"2025-03-20","id":"06207ec81621","priority":"action","category":"navaid","kind":"changed","summary":"runway 01: operator: F-FEDERAL AVIATION ADMIN. -> F-FEDERAL AVIATION ADMINISTRATION; owner: F-FEDERAL AVIATION ADMIN. -> F-FEDERAL AVIATION ADMINISTRATION","source":"ILS_BASE","fields":[{"field":"OPERATOR","old":"F-FEDERAL AVIATION ADMIN.","new":"F-FEDERAL AVIATION ADMINISTRATION"},{"field":"OWNER","old":"F-FEDERAL AVIATION ADMIN.","new":"F-FEDERAL AVIATION ADMINISTRATION"}]},{"cycle":"2025-04-17","from_cycle":"2025-03-20","id":"2746b09c091f","priority":"fyi","category":"navaid","kind":"changed","summary":"runway 01: remark: ILS UNMONITORED. -> ILS UNMON.","source":"ILS_RMK","fields":[{"field":"REMARK","old":"ILS UNMONITORED.","new":"ILS UNMON."}]}],"first_cycle":"2025-04-17","last_cycle":"2026-09-03"}