{"schema_version":1,"from_cycle":"2026-10-01","to_cycle":"2026-10-29","airport":"GKN","counts":{"action":1,"ifr":1,"fyi":0},"changes":[{"id":"47b77b06ce52","priority":"action","category":"navaid","kind":"changed","summary":"GKN (Gulkana) navaid: status: OPERATIONAL IFR -> OPERATIONAL RESTRICTED","source":"NAV_BASE","fields":[{"field":"NAV_STATUS","old":"OPERATIONAL IFR","new":"OPERATIONAL RESTRICTED"}]},{"id":"431ba6092e75","priority":"ifr","category":"remark","kind":"added","summary":"new navaid remark: VOR unusable 041-051 beyond 40 nautical miles below 11000 feet; 041-051 beyond 55 nautical miles; 052-176 beyond 40 nautical miles; 177-187 beyond 40 nautical miles below 10000 feet; 177-187 beyond 53 nautical miles; 188-224 beyond 40 nautical miles; 245-246 beyond 40 nautical miles below 7000 feet; 245-246 beyond 67 nautical miles; 247-324 beyond 40 nautical miles; 342-344 beyond 40 nautical miles below 7000 feet; 342-344 beyond 55 nautical miles below 13000 feet; 342-344 beyond 63 nautical miles; 359-040 beyond 40 nautical miles.","source":"NAV_RMK","original":"VOR UNUSBL 041-051 BYD 40 NM BLW 11000 FT; 041-051 BYD 55 NM; 052-176 BYD 40 NM; 177-187 BYD 40 NM BLW 10000 FT; 177-187 BYD 53 NM; 188-224 BYD 40 NM; 245-246 BYD 40 NM BLW 7000 FT; 245-246 BYD 67 NM; 247-324 BYD 40 NM; 342-344 BYD 40 NM BLW 7000 FT; 342-344 BYD 55 NM BLW 13000 FT; 342-344 BYD 63 NM; 359-040 BYD 40 NM."}]}