{"schema_version":1,"airport":"4C4","entries":[{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"53f899effee9","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: CTLG OBTSN EXCEEDS A 45 DEG SLP.","source":"APT_RMK","original":"CTLG OBTSN EXCEEDS A 45 DEG SLP.","fields":[{"field":"REMARK","old":"APCH SLOPE 3:1 TO DSPLCD THR. ROAD 0-35 FT FM RWY.  1:1 SFC TO CLR ROAD 15 FT.","new":"CTLG OBTSN EXCEEDS A 45 DEG SLP."}]},{"cycle":"2025-10-30","from_cycle":"2025-10-02","id":"ffba3fd31535","priority":"fyi","category":"runway","kind":"changed","summary":"runway 04: controlling obstacle changed (now 75 ft tall, 70 ft from threshold, 117 ft right of centerline, clearance slope 0:1)","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"105","new":"117"},{"field":"DIST_FROM_THR","old":"85","new":"70"},{"field":"OBSTN_CLNC_SLOPE","old":"1","new":"0"},{"field":"OBSTN_HGT","old":"77","new":"75"}]},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"db2e940e1093","priority":"fyi","category":"runway","kind":"changed","summary":"runway 04: controlling obstacle changed (now 77 ft tall, 85 ft from threshold, 105 ft right of centerline, clearance slope 1:1)","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"117","new":"105"},{"field":"DIST_FROM_THR","old":"70","new":"85"}]},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"56126bd7ef42","priority":"fyi","category":"runway","kind":"changed","summary":"runway 22: controlling obstacle changed (now 16 ft tall, 20 ft from threshold, 0 ft either side of centerline, clearance slope 1:1)","source":"APT_RWY_END","fields":[{"field":"DIST_FROM_THR","old":"0","new":"20"}]}],"first_cycle":"2024-09-05","last_cycle":"2025-10-30"}