{"schema_version":1,"airport":"COS","entries":[{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"110fa0cd907f","priority":"action","category":"remark","kind":"removed","summary":"remark removed: COMMUNICATIONS PRVDD BY DENVER RADIO ON FREQ 122.4 (BLACK FOREST RCO).","source":"ATC_RMK","original":"COMMUNICATIONS PRVDD BY DENVER RADIO ON FREQ 122.4 (BLACK FOREST RCO)."},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"9614369e6f8b","priority":"fyi","category":"frequency","kind":"removed","summary":"flight service (FSS) 122.4 via the Black Forest outlet no longer available","source":"FRQ"},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"492c391ac235","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/2607/00087AD.PDF"}},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"3a6908da9582","priority":"fyi","category":"airport","kind":"changed","summary":"landing fee now charged; services: added annual surveying (SURV)","source":"APT_BASE","fields":[{"field":"LNDG_FEE_FLAG","old":"N","new":"Y"},{"field":"OTHER_SERVICES","old":"AFRT,AMB,AVNCS,CARGO,CHTR,INSTR,RNTL,SALES","new":"AFRT,AMB,AVNCS,CARGO,CHTR,INSTR,RNTL,SALES,SURV"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"28c65079a975","priority":"fyi","category":"airport","kind":"changed","summary":"name changed: Greg Phillips -> Alexandru Kovacs","source":"APT_CON","fields":[{"field":"NAME","old":"GREG PHILLIPS","new":"ALEXANDRU KOVACS"}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"ba9f4573ad4b","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: MISC-WX OPR H24 INCL WKEND; ++ CTC 834-4337, C 719-556-4337. OBSN AND FCST BY NWS KCOS. LLWASL KPEF WATCH, WARNING, ADZY.","source":"APT_RMK","original":"MISC-WX OPR H24 INCL WKEND; ++ CTC 834-4337, C 719-556-4337. OBSN AND FCST BY NWS KCOS. LLWASL KPEF WATCH, WARNING, ADZY.","fields":[{"field":"REMARK","old":"MISC-WX OPR H24 EXC WKEND; SBY FRI & SAT 0500-1300Z++ CTC 834-4337, C719-556-4337.","new":"MISC-WX OPR H24 INCL WKEND; ++ CTC 834-4337, C 719-556-4337. OBSN AND FCST BY NWS KCOS. LLWASL KPEF WATCH, WARNING, ADZY."}]},{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"0755c6ab1e18","priority":"action","category":"remark","kind":"added","summary":"new remark: SAID in use; operate transponders with altitude reporting mode and ADS-B (if equipped) enabled on all airport surfaces.","source":"ATC_RMK","original":"SAID IN USE. OPERATE TRANSPONDERS WITH ALTITUDE REPORTING MODE AND ADS-B (IF EQUIPPED) ENABLED ON ALL AIRPORT SURFACES."},{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"7048f579d486","priority":"ifr","category":"route","kind":"changed","summary":"preferred IFR routes: 3 added","source":"PFR","details":["new preferred IFR route BWI -> COS: BWI FOXHL1 OTTTO Q176 STL J24 MCI J80 GLD OZZZY5 COS","new preferred IFR route DCA -> COS: DCA REBLL5 OTTTO Q176 STL J24 MCI J80 GLD OZZZY5 COS","new preferred IFR route IAD -> COS: IAD RNLDI4 OTTTO Q176 STL J24 MCI J80 GLD OZZZY5 COS"]},{"cycle":"2025-06-12","from_cycle":"2025-05-15","id":"2011088e1e65","priority":"ifr","category":"route","kind":"changed","summary":"preferred IFR routes: 2 changed","source":"PFR","details":["preferred IFR route HOU -> COS is now: HOU STYCK8 DOLEY ADM MMB TOTOE LAA OZZZY5 COS","preferred IFR route IAH -> COS is now: IAH STYCK8 DOLEY ADM MMB TOTOE LAA OZZZY5 COS"]},{"cycle":"2025-02-20","from_cycle":"2025-01-23","id":"2e8c062661e7","priority":"action","category":"weather","kind":"changed","summary":"AWOS/ASOS phone number changed to 719-694-7502","source":"AWOS","fields":[{"field":"PHONE_NO","old":"719-380-6748","new":"719-694-7502"}]},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"50c6b7e0677d","priority":"ifr","category":"procedure","kind":"changed","summary":"arrival/departure procedures new or updated: DBRY5, OZZZY5","source":"STAR/DP","procedures":{"updated":["DBRY5","OZZZY5"],"removed":[]}},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"95bca288e590","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: Miscellaneous weather operations 24 hours except weekends; standby Friday and Saturday 0500-1300Z (one hour earlier during daylight saving time) or contact 834-4337 and C719-556-4337.","source":"APT_RMK","original":"MISC-WX OPR H24 EXC WKEND; SBY FRI & SAT 0500-1300Z++ CTC 834-4337, C719-556-4337.","fields":[{"field":"REMARK","old":"MISC-WX OPR H24, INCL HOL; CTC DSN 834-4337.","new":"MISC-WX OPR H24 EXC WKEND; SBY FRI & SAT 0500-1300Z++ CTC 834-4337, C719-556-4337."}]}],"first_cycle":"2024-09-05","last_cycle":"2026-09-03"}