{"schema_version":1,"airport":"PTW","entries":[{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"e3dfd4ad6986","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/2609/NE4ALT.PDF"}},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"db38ca64ad91","priority":"ifr","category":"chart","kind":"removed","summary":"approach VOR/DME-A removed","source":"D-TPP","chart":{"code":"IAP","name":"VOR/DME-A","amdt":"4B"}},{"cycle":"2026-05-14","from_cycle":"2026-04-16","id":"c94b92004b00","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: RWY 28 APCH RATIO 19:1 TO DTHR.","source":"APT_RMK","original":"RWY 28 APCH RATIO 19:1 TO DTHR.","fields":[{"field":"REMARK","old":"APCH RATIO 21:1 TO DTHR.","new":"RWY 28 APCH RATIO 19:1 TO DTHR."}]},{"cycle":"2026-05-14","from_cycle":"2026-04-16","id":"d82c49c1556d","priority":"fyi","category":"runway","kind":"changed","summary":"runway 10: controlling obstacle changed (now 14 ft tall, 381 ft from threshold, 13 ft left of centerline, clearance slope 12:1)","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"351","new":"13"},{"field":"DIST_FROM_THR","old":"1223","new":"381"},{"field":"OBSTN_CLNC_SLOPE","old":"16","new":"12"},{"field":"OBSTN_HGT","old":"61","new":"14"}]},{"cycle":"2026-05-14","from_cycle":"2026-04-16","id":"00bc677f2039","priority":"fyi","category":"runway","kind":"changed","summary":"runway 28: controlling obstacle changed (now 40 ft tall, 576 ft from threshold, 269 ft right of centerline, clearance slope 9:1)","source":"APT_RWY_END","fields":[{"field":"OBSTN_CLNC_SLOPE","old":"10","new":"9"},{"field":"OBSTN_HGT","old":"37","new":"40"}]},{"cycle":"2026-03-19","from_cycle":"2026-02-19","id":"6c91b6a97e31","priority":"ifr","category":"route","kind":"changed","summary":"preferred IFR routes: 1 removed","source":"PFR","details":["preferred IFR route MKE -> PTW removed"]},{"cycle":"2025-08-07","from_cycle":"2025-07-10","id":"17148c5e0f53","priority":"ifr","category":"route","kind":"changed","summary":"preferred IFR routes: 1 removed","source":"PFR","details":["preferred IFR route MSP -> PTW removed"]}],"first_cycle":"2025-08-07","last_cycle":"2026-09-03"}