{"schema_version":1,"from_cycle":"2026-10-01","to_cycle":"2026-10-29","airport":"4B6","counts":{"action":0,"ifr":0,"fyi":2},"changes":[{"id":"3570ae0339cb","priority":"fyi","category":"remark","kind":"added","summary":"new runway 20 controlling obstacle clearance slope remark: Runway 20 controlling obstruction exceeds a 45 degree slope.","source":"APT_RMK","original":"RWY 20 CTLNG OBSTN EXCEEDS A 45 DEG SLP."},{"id":"9bc48e35c475","priority":"fyi","category":"runway","kind":"changed","summary":"runway 20: controlling obstacle: TREES 30 ft tall, 200 ft from threshold, 116 ft left of centerline -> TREES 50 ft tall, 246 ft from threshold, 219 ft left of centerline","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"116","new":"219"},{"field":"DIST_FROM_THR","old":"200","new":"246"},{"field":"OBSTN_HGT","old":"30","new":"50"}]}]}