{"schema_version":1,"airport":"GPZ","entries":[{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"d78e019aba15","priority":"fyi","category":"frequency","kind":"removed","summary":"flight service (FSS) 122.4 via the Grand Rapids outlet no longer available","source":"FRQ"},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"27fdce390911","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: For clearance contact MINNEAPOLIS ARTCC at 651-463-5588.","source":"APT_RMK","original":"FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588.","fields":[{"field":"REMARK","old":"FOR CD IF UNA TO CTC ON FSS FREQ, CTC MINNEAPOLIS ARTCC AT 651-463-5588.","new":"FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588."}]},{"cycle":"2026-02-19","from_cycle":"2026-01-22","id":"95e235dc3eb9","priority":"fyi","category":"navaid","kind":"changed","summary":"GPZ navaid: remark: DME UNUSABLE 030-022 BYD 35 NM BLW 5000 FT; 142-164 BYD 25 NM BLW 7000 FT; 181-308 BYD 20 NM BLW 7000 FT; 309-326 BYD 20 NM BLW 5000 FT. -> DME UNUSBL 003-022 BYD 35 NM BLW 5000 FT; 095-110 BLW 2900 FT; 095-110 BYD 27 NM BLW 6000 FT; 095-110 BYD 29 NM BLW 9000 FT;  142-164 BYD 25 NM BLW 7000 FT; 181-308 BYD 20 NM BLW 7000 FT; 309-326 BYD 20 NM BLW 5000 FT.","source":"NAV_RMK","fields":[{"field":"REMARK","old":"DME UNUSABLE 030-022 BYD 35 NM BLW 5000 FT; 142-164 BYD 25 NM BLW 7000 FT; 181-308 BYD 20 NM BLW 7000 FT; 309-326 BYD 20 NM BLW 5000 FT.","new":"DME UNUSBL 003-022 BYD 35 NM BLW 5000 FT; 095-110 BLW 2900 FT; 095-110 BYD 27 NM BLW 6000 FT; 095-110 BYD 29 NM BLW 9000 FT;  142-164 BYD 25 NM BLW 7000 FT; 181-308 BYD 20 NM BLW 7000 FT; 309-326 BYD 20 NM BLW 5000 FT."}]},{"cycle":"2026-02-19","from_cycle":"2026-01-22","id":"e3206a6998d0","priority":"fyi","category":"navaid","kind":"changed","summary":"GPZ navaid: remark: VOR UNUSBL 030-075 BYD 14 NM BLW 3000 FT; 030-075 BYD 35 NM BLW 7000 FT; 115-209 BYD 14 NM BLW 9000 FT; 210-304 BYD 20 NM BLW 9000 FT; 305-029 BYD 25 NM BLW 5000 FT; 305-029 BYD 35 NM BLW 9000 FT. -> VOR UNUSBL 030-075 BYD 14 NM BLW 3000 FT; 030-075 BYD 35 NM BLW 7000 FT; 095-110 BLW 2900 FT; 095-110 BYD 27 NM BLW 6000 FT; 095-110 BYD 29 NM BLW 9000 FT; 115-209 BYD 14 NM BLW 9000 FT; 210-304 BYD 20 NM BLW 9000 FT; 305-029 BYD 25 NM BLW 5000 FT; 305-029 BYD 35 NM BLW 9000 FT.","source":"NAV_RMK","fields":[{"field":"REMARK","old":"VOR UNUSBL 030-075 BYD 14 NM BLW 3000 FT; 030-075 BYD 35 NM BLW 7000 FT; 115-209 BYD 14 NM BLW 9000 FT; 210-304 BYD 20 NM BLW 9000 FT; 305-029 BYD 25 NM BLW 5000 FT; 305-029 BYD 35 NM BLW 9000 FT.","new":"VOR UNUSBL 030-075 BYD 14 NM BLW 3000 FT; 030-075 BYD 35 NM BLW 7000 FT; 095-110 BLW 2900 FT; 095-110 BYD 27 NM BLW 6000 FT; 095-110 BYD 29 NM BLW 9000 FT; 115-209 BYD 14 NM BLW 9000 FT; 210-304 BYD 20 NM BLW 9000 FT; 305-029 BYD 25 NM BLW 5000 FT; 305-029 BYD 35 NM BLW 9000 FT."}]},{"cycle":"2025-11-27","from_cycle":"2025-10-30","id":"950e4c152ab0","priority":"fyi","category":"runway","kind":"changed","summary":"runway 34: controlling obstacle changed (now 37 ft tall, 1378 ft from threshold, 562 ft left of centerline, clearance slope 31:1); controlling obstacle: ROAD -> BRUSH","source":"APT_RWY_END","fields":[{"field":"CNTRLN_DIR_CODE","old":"R","new":"L"},{"field":"CNTRLN_OFFSET","old":"490","new":"562"},{"field":"DIST_FROM_THR","old":"212","new":"1378"},{"field":"OBSTN_CLNC_SLOPE","old":"1","new":"31"},{"field":"OBSTN_HGT","old":"9","new":"37"},{"field":"OBSTN_TYPE","old":"ROAD","new":"BRUSH"}]},{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"be043a8277a0","priority":"action","category":"navaid","kind":"changed","summary":"GPZ (Grand Rapids) navaid: frequency changed: 111.4 -> 114.65; TACAN channel: 51X -> 93Y","source":"NAV_BASE","fields":[{"field":"CHAN","old":"51X","new":"93Y"},{"field":"FREQ","old":"111.4","new":"114.65"}]},{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"6d3cea4cdbbd","priority":"action","category":"frequency","kind":"removed","summary":"frequency 111.4/51X (GPZ VOR/DME) removed","source":"FRQ"},{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"410c0d9e4867","priority":"action","category":"frequency","kind":"added","summary":"frequency 114.65/93Y (GPZ VOR/DME) added","source":"FRQ"}],"first_cycle":"2025-08-07","last_cycle":"2026-09-03"}