{"schema_version":1,"airport":"58S","entries":[{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"d19d380b1343","priority":"fyi","category":"remark","kind":"added","summary":"new remark: CALM WIND USE RWY 11; MINIMIZE PATTERN WORK.","source":"APT_RMK","original":"CALM WIND USE RWY 11; MINIMIZE PATTERN WORK."},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"8cefd145e57f","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: Airport surface condition unmonitored; call airport manager or local contact for current conditions at 406-444-2506, local contact 406-261-4385, or 303-918-9042.","source":"APT_RMK","original":"ARPT SFC COND UNMON, CALL AMGR OR LCL CTC FOR CURRENT CONDS 406-444-2506, LCL CTC 406-261-4385, OR 303-918-9042.","fields":[{"field":"REMARK","old":"SN REMOVAL INTMT, CALL AMGR OR LCL CTC FOR CURRENT CONDS AMGR 406-444-2506, LCL CTC 406-261-4385, OR 303-918-9042.","new":"ARPT SFC COND UNMON, CALL AMGR OR LCL CTC FOR CURRENT CONDS 406-444-2506, LCL CTC 406-261-4385, OR 303-918-9042."}]},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"0f84a86d755e","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: RWY 11/29 TREES, RAIL ROAD  & P-LINES IN TRSNL SFC FULL RWY LEN ON N SIDE. MAY BE GOPHER HOLES OR IREG SFC.","source":"APT_RMK","original":"RWY 11/29 TREES, RAIL ROAD  & P-LINES IN TRSNL SFC FULL RWY LEN ON N SIDE. MAY BE GOPHER HOLES OR IREG SFC.","fields":[{"field":"REMARK","old":"RWY 11/29 TREES RR & P-LINES IN TRANSITIONAL SFC FULL RWY LEN ON N SIDE.","new":"RWY 11/29 TREES, RAIL ROAD  & P-LINES IN TRSNL SFC FULL RWY LEN ON N SIDE. MAY BE GOPHER HOLES OR IREG SFC."}]},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"f9c9b814e944","priority":"fyi","category":"runway","kind":"changed","summary":"runway 11: controlling obstacle changed (now 60 ft tall, 686 ft from threshold, 148 ft right of centerline, clearance slope 11:1); markings now in  condition; markings: nonstandard (other than numbers only) (NSTD) -> none","source":"APT_RWY_END","fields":[{"field":"DIST_FROM_THR","old":"1639","new":"686"},{"field":"OBSTN_CLNC_SLOPE","old":"16","new":"11"},{"field":"OBSTN_HGT","old":"102","new":"60"},{"field":"RWY_MARKING_COND","old":"FAIR","new":""},{"field":"RWY_MARKING_TYPE_CODE","old":"NSTD","new":""}]},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"90cbfda4b9e4","priority":"fyi","category":"runway","kind":"changed","summary":"runway 29: controlling obstacle changed (now 97 ft tall, 442 ft from threshold, 159 ft right of centerline, clearance slope 4:1); markings now in  condition; markings: nonstandard (other than numbers only) (NSTD) -> none","source":"APT_RWY_END","fields":[{"field":"DIST_FROM_THR","old":"466","new":"442"},{"field":"OBSTN_CLNC_SLOPE","old":"5","new":"4"},{"field":"OBSTN_HGT","old":"93","new":"97"},{"field":"RWY_MARKING_COND","old":"FAIR","new":""},{"field":"RWY_MARKING_TYPE_CODE","old":"NSTD","new":""}]}],"first_cycle":"2024-11-28","last_cycle":"2026-07-09"}