{"schema_version":1,"airport":"PLR","entries":[{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"8033572cf0f2","priority":"fyi","category":"runway","kind":"changed","summary":"runway 03: controlling obstacle changed (now 82 ft tall, 861 ft from threshold, 310 ft right of centerline, clearance slope 8:1)","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"385","new":"310"},{"field":"DIST_FROM_THR","old":"1038","new":"861"},{"field":"OBSTN_HGT","old":"100","new":"82"}]},{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"968dd034d533","priority":"fyi","category":"runway","kind":"changed","summary":"runway 21: controlling obstacle changed (now 34 ft tall, 733 ft from threshold, 276 ft right of centerline, clearance slope 15:1)","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"196","new":"276"},{"field":"DIST_FROM_THR","old":"385","new":"733"},{"field":"OBSTN_CLNC_SLOPE","old":"6","new":"15"},{"field":"OBSTN_HGT","old":"29","new":"34"}]},{"cycle":"2026-03-19","from_cycle":"2026-02-19","id":"bbae32876044","priority":"fyi","category":"frequency","kind":"added","summary":"frequency 121.725 now also listed for APT REMARK 3 WITH GCO FREQ","source":"FRQ"},{"cycle":"2026-03-19","from_cycle":"2026-02-19","id":"49d670c01c56","priority":"fyi","category":"remark","kind":"added","summary":"new remark: FOR CD IF UNA VIA GCO CTC BIRMINGHAM APCH AT 205-769-3890/3891.","source":"APT_RMK","original":"FOR CD IF UNA VIA GCO CTC BIRMINGHAM APCH AT 205-769-3890/3891."},{"cycle":"2026-03-19","from_cycle":"2026-02-19","id":"146b7db653fe","priority":"fyi","category":"remark","kind":"added","summary":"new remark: GCO AVBL ON FREQ 121.725 THRU BIRMINGHAM (BMH) CLEARANCE DELIVERY.","source":"APT_RMK","original":"GCO AVBL ON FREQ 121.725 THRU BIRMINGHAM (BMH) CLEARANCE DELIVERY."},{"cycle":"2026-03-19","from_cycle":"2026-02-19","id":"0f2343c6191a","priority":"fyi","category":"remark","kind":"removed","summary":"remark removed: BIRMINGHAM CLNC FONE NR TO CTC 205-769-3890.","source":"APT_RMK","original":"BIRMINGHAM CLNC FONE NR TO CTC 205-769-3890."},{"cycle":"2025-11-27","from_cycle":"2025-10-30","id":"3b5862fce3f7","priority":"fyi","category":"frequency","kind":"changed","summary":"frequency 121.725 no longer listed for APT REMARK 1 WITH GCO FREQ","source":"FRQ","fields":[{"field":"FREQ_USE","old":"APT REMARK 1 WITH GCO FREQ","new":""}]},{"cycle":"2025-11-27","from_cycle":"2025-10-30","id":"a28dbc69a5e0","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: BIRMINGHAM CLNC FONE NR TO CTC 205-769-3890.","source":"APT_RMK","original":"BIRMINGHAM CLNC FONE NR TO CTC 205-769-3890.","fields":[{"field":"REMARK","old":"GCO AVBL ON FREQ 121.725  (BHM CLNC DEL).","new":"BIRMINGHAM CLNC FONE NR TO CTC 205-769-3890."}]},{"cycle":"2025-09-04","from_cycle":"2025-08-07","id":"92111a611210","priority":"fyi","category":"runway","kind":"changed","summary":"runway 03: controlling obstacle changed (now 100 ft tall, 1038 ft from threshold, 385 ft right of centerline, clearance slope 8:1); markings now in fair condition","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"338","new":"385"},{"field":"DIST_FROM_THR","old":"968","new":"1038"},{"field":"OBSTN_HGT","old":"88","new":"100"},{"field":"RWY_MARKING_COND","old":"GOOD","new":"FAIR"}]},{"cycle":"2025-09-04","from_cycle":"2025-08-07","id":"52b9badad98b","priority":"fyi","category":"runway","kind":"changed","summary":"runway 21: controlling obstacle changed (now 29 ft tall, 385 ft from threshold, 196 ft right of centerline, clearance slope 6:1); markings now in fair condition","source":"APT_RWY_END","fields":[{"field":"CNTRLN_OFFSET","old":"257","new":"196"},{"field":"DIST_FROM_THR","old":"504","new":"385"},{"field":"OBSTN_CLNC_SLOPE","old":"8","new":"6"},{"field":"OBSTN_HGT","old":"35","new":"29"},{"field":"RWY_MARKING_COND","old":"GOOD","new":"FAIR"}]}],"first_cycle":"2025-09-04","last_cycle":"2026-09-03"}