{"schema_version":1,"airport":"CDR","entries":[{"cycle":"2026-10-01","from_cycle":"2026-09-03","engine":"1.3.8","id":"754ae238d5ad","priority":"fyi","category":"remark","kind":"added","summary":"new runway 21 controlling obstacle clearance slope remark: Runway approach ratio is 64 to 1 from displaced threshold.","source":"APT_RMK","original":"RWY APCH RATIO 64:1 FM DSPLCD THR."},{"cycle":"2026-10-01","from_cycle":"2026-09-03","engine":"1.3.8","id":"189fda104142","priority":"fyi","category":"remark","kind":"added","summary":"new runway 21 end remark: runway 21 trees 135R.","source":"APT_RMK","original":"RWY 21 TREES 135R."},{"cycle":"2026-10-01","from_cycle":"2026-09-03","engine":"1.3.8","id":"cc6d017e8661","priority":"fyi","category":"remark","kind":"changed","summary":"revised remark: Approach ratio is 45:1 from displaced threshold.","source":"APT_RMK","original":".APCH RATIO 45:1 FM DSPLCD THR.","fields":[{"field":"REMARK","old":"APCH RATIO 45:1 FM DSPLCD THR.","new":".APCH RATIO 45:1 FM DSPLCD THR."}]},{"cycle":"2026-10-01","from_cycle":"2026-09-03","engine":"1.3.8","id":"6ffbad7a7d8d","priority":"fyi","category":"remark","kind":"changed","summary":"revised remark: Roger Stevens is the airport operations supervisor on site; airport office 308-615-9007.","source":"APT_RMK","original":"ROGER STEVENS ON SITE AIRPORT OPERATIONS SUPERVISOR.  ARPT OFFICE 308-615-9007.","fields":[{"field":"REMARK","old":"ROGER STEVENS ON SITE AIRPORT OPERATIONS SUPERVISOR.  ARPT OFFICE 308-615-9007","new":"ROGER STEVENS ON SITE AIRPORT OPERATIONS SUPERVISOR.  ARPT OFFICE 308-615-9007."}]},{"cycle":"2026-10-01","from_cycle":"2026-09-03","engine":"1.3.8","id":"5418970f7312","priority":"fyi","category":"runway","kind":"changed","summary":"runway 12: controlling obstacle: TREES 15 ft tall, 936 ft from threshold, 169 ft right of centerline -> none listed; obstacle clearance slope: 49:1 -> 20:1; Part 77 runway category: utility runway with a visual approach (A(V)) -> utility runway with a nonprecision approach (A(NP))","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"R","new":""},{"field":"CNTRLN_OFFSET","old":"169","new":""},{"field":"DIST_FROM_THR","old":"936","new":""},{"field":"FAR_PART_77_CODE","old":"A(V)","new":"A(NP)"},{"field":"OBSTN_CLNC_SLOPE","old":"49","new":"20"},{"field":"OBSTN_HGT","old":"15","new":""},{"field":"OBSTN_TYPE","old":"TREES","new":""}]},{"cycle":"2026-10-01","from_cycle":"2026-09-03","engine":"1.3.8","id":"a9bd3804a077","priority":"fyi","category":"runway","kind":"changed","summary":"runway 21: controlling obstacle: BRUSH 14 ft tall, 331 ft from threshold, 426 ft left of centerline -> TREES 14 ft tall, 365 ft from threshold, 361 ft left of centerline; obstacle clearance slope: 9:1 -> 11:1","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"426","new":"361"},{"field":"DIST_FROM_THR","old":"331","new":"365"},{"field":"OBSTN_CLNC_SLOPE","old":"9","new":"11"},{"field":"OBSTN_TYPE","old":"BRUSH","new":"TREES"}]},{"cycle":"2026-10-01","from_cycle":"2026-09-03","engine":"1.3.8","id":"c3496758023a","priority":"fyi","category":"runway","kind":"changed","summary":"runway 30: controlling obstacle: ROAD 35 ft tall, 1400 ft from threshold, 220 ft left of centerline -> none listed; obstacle clearance slope: 34:1 -> 20:1; Part 77 runway category: utility runway with a visual approach (A(V)) -> utility runway with a nonprecision approach (A(NP))","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"L","new":""},{"field":"CNTRLN_OFFSET","old":"220","new":""},{"field":"DIST_FROM_THR","old":"1400","new":""},{"field":"FAR_PART_77_CODE","old":"A(V)","new":"A(NP)"},{"field":"OBSTN_CLNC_SLOPE","old":"34","new":"20"},{"field":"OBSTN_HGT","old":"35","new":""},{"field":"OBSTN_TYPE","old":"ROAD","new":""}]},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"e6fe5a6cc991","priority":"ifr","category":"chart","kind":"changed","summary":"approach ILS OR LOC RWY 03 redrawn (still amdt 3)","source":"D-TPP","chart":{"code":"IAP","name":"ILS OR LOC RWY 03","amdt":"3","pdf":"https://aeronav.faa.gov/d-tpp/2609/00506IL3.PDF"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"a485fb249099","priority":"ifr","category":"chart","kind":"changed","summary":"approach NDB RWY 21 redrawn (still amdt 12D)","source":"D-TPP","chart":{"code":"IAP","name":"NDB RWY 21","amdt":"12D","pdf":"https://aeronav.faa.gov/d-tpp/2609/00506N21.PDF"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"03791886ab00","priority":"fyi","category":"frequency","kind":"removed","summary":"flight service (FSS) 122.5 via the Chadron outlet no longer available","source":"FRQ"},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"6b64d003a008","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: For clearance delivery contact Denver ARTCC at 303-651-4257.","source":"APT_RMK","original":"FOR CD CTC DENVER ARTCC AT 303-651-4257.","fields":[{"field":"REMARK","old":"FOR CD IF UNA TO CTC ON FSS FREQ, CTC DENVER ARTCC AT 303-651-4257.","new":"FOR CD CTC DENVER ARTCC AT 303-651-4257."}]},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"6b5859248736","priority":"action","category":"navaid","kind":"removed","summary":"ILS RWY 03 (CDR): outer marker removed","source":"ILS_MKR","fields":[{"field":"RWY_END_ID","old":"03","new":""},{"field":"ILS_LOC_ID","old":"CDR","new":""},{"field":"SYSTEM_TYPE_CODE","old":"LS","new":""},{"field":"ILS_COMP_TYPE_CODE","old":"OM","new":""},{"field":"COMPONENT_STATUS","old":"OPERATIONAL IFR","new":""}]},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"c30d59cf7ae2","priority":"ifr","category":"chart","kind":"changed","summary":"minimums page (ALTERNATE MINIMUMS) changed","source":"D-TPP","chart":{"code":"MIN","name":"ALTERNATE MINIMUMS","amdt":"","pdf":"https://aeronav.faa.gov/d-tpp/2607/NC2ALT.PDF"}},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"9cf7208b1231","priority":"ifr","category":"chart","kind":"changed","summary":"approach ILS OR LOC RWY 03 amended (amdt 3)","source":"D-TPP","chart":{"code":"IAP","name":"ILS OR LOC RWY 03","amdt":"3","pdf":"https://aeronav.faa.gov/d-tpp/2607/00506IL3.PDF"}},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"3f4f8c9b8ef7","priority":"ifr","category":"chart","kind":"changed","summary":"approach RNAV (GPS) RWY 03 redrawn (still amdt 1D)","source":"D-TPP","chart":{"code":"IAP","name":"RNAV (GPS) RWY 03","amdt":"1D","pdf":"https://aeronav.faa.gov/d-tpp/2607/00506R3.PDF"}},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"494ea1489bca","priority":"ifr","category":"chart","kind":"changed","summary":"approach RNAV (GPS) RWY 12 redrawn (still amdt 0C)","source":"D-TPP","chart":{"code":"IAP","name":"RNAV (GPS) RWY 12","amdt":"0C","pdf":"https://aeronav.faa.gov/d-tpp/2607/00506R12.PDF"}},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"0a20d94ade0b","priority":"ifr","category":"chart","kind":"changed","summary":"approach RNAV (GPS) RWY 21 redrawn (still amdt 2D)","source":"D-TPP","chart":{"code":"IAP","name":"RNAV (GPS) RWY 21","amdt":"2D","pdf":"https://aeronav.faa.gov/d-tpp/2607/00506R21.PDF"}},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"fc5c975fb666","priority":"ifr","category":"chart","kind":"changed","summary":"approach RNAV (GPS) RWY 30 redrawn (still amdt 0C)","source":"D-TPP","chart":{"code":"IAP","name":"RNAV (GPS) RWY 30","amdt":"0C","pdf":"https://aeronav.faa.gov/d-tpp/2607/00506R30.PDF"}},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"514a41da4332","priority":"ifr","category":"chart","kind":"changed","summary":"approach NDB RWY 21 redrawn (still amdt 12D)","source":"D-TPP","chart":{"code":"IAP","name":"NDB RWY 21","amdt":"12D","pdf":"https://aeronav.faa.gov/d-tpp/2607/00506N21.PDF"}},{"cycle":"2026-06-11","from_cycle":"2026-05-14","id":"081a36beb5d0","priority":"action","category":"weather","kind":"changed","summary":"AWOS/ASOS phone number changed to 308-880-5992","source":"AWOS","fields":[{"field":"PHONE_NO","old":"308-432-5574","new":"308-880-5992"}]}],"first_cycle":"2026-06-11","last_cycle":"2026-10-01"}