{"schema_version":1,"airport":"OPN","entries":[{"cycle":"2026-08-06","from_cycle":"2026-07-09","id":"a6cb2451a5b2","priority":"action","category":"navaid","kind":"removed","summary":"ILS/DME RWY 30 (OPN): middle marker removed","source":"ILS_MKR","fields":[{"field":"RWY_END_ID","old":"30","new":""},{"field":"ILS_LOC_ID","old":"OPN","new":""},{"field":"SYSTEM_TYPE_CODE","old":"LD","new":""},{"field":"ILS_COMP_TYPE_CODE","old":"MM","new":""},{"field":"COMPONENT_STATUS","old":"OPERATIONAL IFR","new":""}]},{"cycle":"2026-01-22","from_cycle":"2025-12-25","id":"e3aee7540345","priority":"fyi","category":"runway","kind":"changed","summary":"runway 12: Part 77 runway category: other than utility runway with a nonprecision approach having visibility minimums greater than 3/4 mile (C) -> other than utility runway with a nonprecision approach having visibility minimums as low as 3/4 mile (D)","source":"APT_RWY_END","fields":[{"field":"FAR_PART_77_CODE","old":"C","new":"D"}]},{"cycle":"2025-07-10","from_cycle":"2025-06-12","id":"0703b22edbb4","priority":"action","category":"navaid","kind":"removed","summary":"ILS/DME RWY 30 (OPN): outer marker removed","source":"ILS_MKR","fields":[{"field":"RWY_END_ID","old":"30","new":""},{"field":"ILS_LOC_ID","old":"OPN","new":""},{"field":"SYSTEM_TYPE_CODE","old":"LD","new":""},{"field":"ILS_COMP_TYPE_CODE","old":"OM","new":""},{"field":"COMPONENT_STATUS","old":"OPERATIONAL IFR","new":""}]}],"first_cycle":"2025-07-10","last_cycle":"2026-08-06"}