{"schema_version":1,"airport":"3U4","entries":[{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"5e19aea71c35","priority":"fyi","category":"airport","kind":"changed","summary":"airport contact address: PO BOX 77 -> PO BOX 77, 112 ST LABRE CAMPUS DR","source":"APT_CON","fields":[{"field":"ADDRESS1","old":"PO BOX 77","new":"PO BOX 77, 112 ST LABRE CAMPUS DR"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"cc3d19e75f87","priority":"fyi","category":"airport","kind":"changed","summary":"airport phone number changed to 406-784-4965; name changed: Tana Mcnac -> Steve Vann","source":"APT_CON","fields":[{"field":"ADDRESS1","old":"PO BOX 77","new":"PO BOX 77, 112 ST LABRE CAMPUS DR"},{"field":"NAME","old":"TANA MCNAC","new":"STEVE VANN"},{"field":"PHONE_NO","old":"(406) 784-4595","new":"406-784-4965"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"2db064ff17e5","priority":"fyi","category":"runway","kind":"changed","summary":"runway 13: controlling obstacle changed (now 52 ft tall, 114 ft from threshold, 33 ft right of centerline, clearance slope 2:1)","source":"APT_RWY_END","fields":[{"field":"OBSTN_HGT","old":"48","new":"52"}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"d0a1006512d8","priority":"fyi","category":"runway","kind":"changed","summary":"runway 31: controlling obstacle changed (now 52 ft tall, 125 ft from threshold, 10 ft left of centerline, clearance slope 2:1)","source":"APT_RWY_END","fields":[{"field":"DIST_FROM_THR","old":"38","new":"125"},{"field":"OBSTN_CLNC_SLOPE","old":"1","new":"2"},{"field":"OBSTN_HGT","old":"30","new":"52"}]}],"first_cycle":"2025-10-30","last_cycle":"2025-10-30"}