{"schema_version":1,"airport":"FDK","entries":[{"cycle":"2026-10-01","from_cycle":"2026-09-03","engine":"1.3.8","id":"991980503a64","priority":"ifr","category":"remark","kind":"changed","summary":"revised navaid remark: Distance Measuring Equipment unusable 065-075 beyond 37 nautical miles below 4500 foot; 087-106 beyond 34 nautical miles below 4500 foot; 154-171 beyond 20 nautical miles below 3200 foot; 184-197 beyond 30 nautical miles below 5500 foot; 200-260 beyond 28 nautical miles below 15000 foot; 265-275 beyond 24 nautical miles below 6000 foot.","source":"NAV_RMK","original":"DME UNUSBL 065-075 BYD 37 NM BLW 4500 FT; 087-106 BYD 34 NM BLW 4500 FT; 154-171 BYD 20 NM BLW 3200 FT; 184-197 BYD 30 NM BLW 5500 FT; 200-260 BYD 28 NM BLW 15000 FT; 265-275 BYD 24 NM BLW 6000 FT.","fields":[{"field":"REMARK","old":"DME UNUSBL 060-105 BYD 35 NM; 125-165 BYD 25 NM; 180-195 BYD 30 NM BLW 5000 FT; 285-345 BYD 20 NM.","new":"DME UNUSBL 065-075 BYD 37 NM BLW 4500 FT; 087-106 BYD 34 NM BLW 4500 FT; 154-171 BYD 20 NM BLW 3200 FT; 184-197 BYD 30 NM BLW 5500 FT; 200-260 BYD 28 NM BLW 15000 FT; 265-275 BYD 24 NM BLW 6000 FT."}]},{"cycle":"2026-10-01","from_cycle":"2026-09-03","engine":"1.3.8","id":"3febeecd4093","priority":"ifr","category":"remark","kind":"changed","summary":"revised navaid remark: VOR unusable 154-171 beyond 20 nautical miles below 3200 foot; 184-197 beyond 30 nautical miles below 5500 foot; 200-260 beyond 28 nautical miles below 15000 foot; 265-275 beyond 24 nautical miles below 6000 foot; 280-305 beyond 25 nautical miles below 10500 foot; 325-355 beyond 23 nautical miles below 8000 foot.","source":"NAV_RMK","original":"VOR UNUSBL 154-171 BYD 20 NM BLW 3200 FT; 184-197 BYD 30 NM BLW 5500 FT; 200-260 BYD 28 NM BLW 15000 FT; 265-275 BYD 24 NM BLW 6000 FT; 280-305 BYD 25 NM BLW 10500 FT; 325-355 BYD 23 NM BLW 8000 FT.","fields":[{"field":"REMARK","old":"VOR UNUSBL 180-195 BYD 30 NM BLW 5000 FT; 196-210; 255-265.","new":"VOR UNUSBL 154-171 BYD 20 NM BLW 3200 FT; 184-197 BYD 30 NM BLW 5500 FT; 200-260 BYD 28 NM BLW 15000 FT; 265-275 BYD 24 NM BLW 6000 FT; 280-305 BYD 25 NM BLW 10500 FT; 325-355 BYD 23 NM BLW 8000 FT."}]},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"190037e49b48","priority":"ifr","category":"chart","kind":"changed","summary":"approach ILS OR LOC RWY 23 redrawn (still amdt 6A)","source":"D-TPP","chart":{"code":"IAP","name":"ILS OR LOC RWY 23","amdt":"6A","pdf":"https://aeronav.faa.gov/d-tpp/2609/05089IL23.PDF"}},{"cycle":"2026-08-06","from_cycle":"2026-07-09","id":"9fb38b5dfd5f","priority":"action","category":"weather","kind":"changed","summary":"weather station type: AWOS-3 -> ASOS","source":"AWOS","fields":[{"field":"ASOS_AWOS_TYPE","old":"AWOS-3","new":"ASOS"}]},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"df18abe87ce8","priority":"ifr","category":"chart","kind":"changed","summary":"arrival TRSTN FOUR (RNAV) changed","source":"D-TPP","chart":{"code":"STR","name":"TRSTN FOUR (RNAV)","amdt":"","pdf":"https://aeronav.faa.gov/d-tpp/2607/05326TRSTN.PDF"}},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"564475322ee5","priority":"fyi","category":"runway","kind":"changed","summary":"runway 05: controlling obstacle changed (now , clearance slope 34:1); controlling obstacle: TREES -> none","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"L","new":""},{"field":"CNTRLN_OFFSET","old":"219","new":""},{"field":"DIST_FROM_THR","old":"1383","new":""},{"field":"OBSTN_CLNC_SLOPE","old":"27","new":"34"},{"field":"OBSTN_HGT","old":"43","new":""},{"field":"OBSTN_TYPE","old":"TREES","new":""}]},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"45751f8d19fa","priority":"fyi","category":"runway","kind":"changed","summary":"runway 23: controlling obstacle changed (now 100 ft tall, 4859 ft from threshold, 339 ft left of centerline, clearance slope 46:1); markings now in good condition","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"721","new":"339"},{"field":"DIST_FROM_THR","old":"2894","new":"4859"},{"field":"OBSTN_CLNC_SLOPE","old":"24","new":"46"},{"field":"OBSTN_HGT","old":"111","new":"100"},{"field":"RWY_MARKING_COND","old":"FAIR","new":"GOOD"}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"02cbdc4b7824","priority":"action","category":"navaid","kind":"changed","summary":"FDK (Frederick) navaid: status: operational restricted","source":"NAV_BASE","fields":[{"field":"TACAN_DME_STATUS","old":"OPERATIONAL IFR","new":"OPERATIONAL RESTRICTED"}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"f13a53e77366","priority":"ifr","category":"navaid","kind":"added","summary":"new navaid remark: DME UNUSBL 060-105 BYD 35 NM; 125-165 BYD 25 NM; 180-195 BYD 30 NM BLW 5000 FT; 285-345 BYD 20 NM.","source":"NAV_RMK","original":"DME UNUSBL 060-105 BYD 35 NM; 125-165 BYD 25 NM; 180-195 BYD 30 NM BLW 5000 FT; 285-345 BYD 20 NM."},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"aaff550b9a0a","priority":"fyi","category":"navaid","kind":"changed","summary":"FDK navaid: remark: VOR UNUSBL 150-160 BYD 10 NM BLW 3000 FT; 180-190. -> VOR UNUSBL 180-195 BYD 30 NM BLW 5000 FT; 196-210; 255-265.","source":"NAV_RMK","fields":[{"field":"REMARK","old":"VOR UNUSBL 150-160 BYD 10 NM BLW 3000 FT; 180-190.","new":"VOR UNUSBL 180-195 BYD 30 NM BLW 5000 FT; 196-210; 255-265."}]},{"cycle":"2025-07-10","from_cycle":"2025-06-12","id":"d99f11e28bee","priority":"fyi","category":"runway","kind":"changed","summary":"runway 05: controlling obstacle changed (now 43 ft tall, 1383 ft from threshold, 219 ft left of centerline, clearance slope 27:1)","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"70","new":"219"},{"field":"DIST_FROM_THR","old":"1339","new":"1383"},{"field":"OBSTN_HGT","old":"42","new":"43"}]},{"cycle":"2025-07-10","from_cycle":"2025-06-12","id":"a106f9c4a850","priority":"fyi","category":"runway","kind":"changed","summary":"runway 12: controlling obstacle changed (now , clearance slope 20:1); controlling obstacle: TREES -> none","source":"APT_RWY_END","fields":[{"field":"OBSTN_CLNC_SLOPE","old":"50","new":"20"},{"field":"OBSTN_TYPE","old":"TREES","new":""}]},{"cycle":"2025-07-10","from_cycle":"2025-06-12","id":"deeebaff7452","priority":"fyi","category":"runway","kind":"changed","summary":"runway 30: controlling obstacle changed (now , clearance slope 20:1); controlling obstacle: TREES -> none","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"R","new":""},{"field":"CNTRLN_OFFSET","old":"70","new":""},{"field":"DIST_FROM_THR","old":"3997","new":""},{"field":"OBSTN_CLNC_SLOPE","old":"24","new":"20"},{"field":"OBSTN_HGT","old":"153","new":""},{"field":"OBSTN_TYPE","old":"TREES","new":""}]},{"cycle":"2025-06-12","from_cycle":"2025-05-15","id":"13c2954feaf8","priority":"action","category":"navaid","kind":"changed","summary":"FDK (Frederick) navaid: now a VOR/DME (was a VOR); status: operational ifr; frequency changed: 109 -> 116.85; TACAN channel: none -> 115Y","source":"NAV_BASE","fields":[{"field":"CHAN","old":"","new":"115Y"},{"field":"FREQ","old":"109","new":"116.85"},{"field":"NAV_TYPE","old":"VOR","new":"VOR/DME"},{"field":"TACAN_DME_STATUS","old":"","new":"OPERATIONAL IFR"}]},{"cycle":"2025-06-12","from_cycle":"2025-05-15","id":"184185c78b5b","priority":"action","category":"navaid","kind":"changed","summary":"FDK navaid: now a VOR/DME (was a VOR); remark subject: LAT_LONG_SOURCE_CODE -> GENERAL_REMARK; remark: 3RD PARTY. -> VOR UNUSBL 150-160 BYD 10 NM BLW 3000 FT; 180-190.","source":"NAV_RMK","fields":[{"field":"NAV_TYPE","old":"VOR","new":"VOR/DME"},{"field":"REF_COL_NAME","old":"LAT_LONG_SOURCE_CODE","new":"GENERAL_REMARK"},{"field":"REMARK","old":"3RD PARTY.","new":"VOR UNUSBL 150-160 BYD 10 NM BLW 3000 FT; 180-190."}]},{"cycle":"2025-06-12","from_cycle":"2025-05-15","id":"4b28826c1316","priority":"action","category":"frequency","kind":"removed","summary":"frequency 109.0 (FDK VOR) removed","source":"FRQ"},{"cycle":"2025-06-12","from_cycle":"2025-05-15","id":"75ea90f64335","priority":"action","category":"frequency","kind":"added","summary":"frequency 116.85/115Y (FDK VOR/DME) added","source":"FRQ"},{"cycle":"2025-06-12","from_cycle":"2025-05-15","id":"59fe0673ceeb","priority":"ifr","category":"navaid","kind":"removed","summary":"removed navaid remark: VOR UNUSBL 150-160 BYD 10 NM BLO 3000 FT; 180-190.","source":"NAV_RMK","original":"VOR UNUSBL 150-160 BYD 10 NM BLO 3000 FT; 180-190."},{"cycle":"2025-02-20","from_cycle":"2025-01-23","id":"a8d0df92eb96","priority":"ifr","category":"procedure","kind":"changed","summary":"arrival/departure procedures new or updated: LINSE, TRSTN4","source":"STAR/DP","procedures":{"updated":["LINSE","TRSTN4"],"removed":[]}},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"0e5497f563bf","priority":"action","category":"remark","kind":"changed","summary":"remark updated: TPA - 600 AGL HEL, 1100 AGL SNGL AND LGT TWINS, 1600 AGL LRG TWINS AND JETS.","source":"APT_RMK","original":"TPA - 600 AGL HEL, 1100 AGL SNGL AND LGT TWINS, 1600 AGL LRG TWINS AND JETS.","fields":[{"field":"REMARK","old":"TPA- 1100 (800) HELICOPTERS, 1300 (1000) SINGLE AND LGT TWINS, 1800 (1500) LARGE TWINS AND JETS.","new":"TPA - 600 AGL HEL, 1100 AGL SNGL AND LGT TWINS, 1600 AGL LRG TWINS AND JETS."}]},{"cycle":"2024-11-28","from_cycle":"2024-10-31","id":"4c5c2902133b","priority":"action","category":"airport","kind":"changed","summary":"traffic pattern altitude: none -> 600 ft AGL","source":"APT_BASE","fields":[{"field":"TPA","old":"","new":"600"}]},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"573287117ecc","priority":"ifr","category":"procedure","kind":"changed","summary":"arrival/departure procedures new or updated: FOXHL, LINSE, TERPZ, TRSTN3","source":"STAR/DP","procedures":{"updated":["FOXHL","LINSE","TERPZ","TRSTN3"],"removed":[]}}],"first_cycle":"2024-09-05","last_cycle":"2026-10-01"}