{"schema_version":1,"airport":"3MI4","entries":[{"cycle":"2026-10-01","from_cycle":"2026-09-03","engine":"1.3.8","id":"69a076bc05b0","priority":"fyi","category":"airport","kind":"changed","summary":"FAA district office: none -> DET","source":"APT_BASE","fields":[{"field":"ADO_CODE","old":"","new":"DET"}]},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"a77b2c7dcbac","priority":"action","category":"remark","kind":"changed","summary":"remark updated: MASON COUNTY LDM 3/4 MI E; AWOS - 119.925. OPS INVOF MNT CTAF 123.0.","source":"APT_RMK","original":"MASON COUNTY LDM 3/4 MI E; AWOS - 119.925. OPS INVOF MNT CTAF 123.0.","fields":[{"field":"REMARK","old":"MASON CO. ARPT (LDM) 3/4 MILE EAST. ACFT OPER. IN VICINITY MONITOR CTAF 123.0.","new":"MASON COUNTY LDM 3/4 MI E; AWOS - 119.925. OPS INVOF MNT CTAF 123.0."}]},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"cbedd4bef3a8","priority":"action","category":"frequency","kind":"changed","summary":"remark: MASON CO. ARPT (LDM) 3/4 MILE EAST. ACFT OPER. IN VICINITY MONITOR CTAF 123.0. -> MASON COUNTY LDM 3/4 MI E; AWOS - 119.925. OPS INVOF MNT CTAF 123.0.","source":"FRQ","fields":[{"field":"REMARK","old":"MASON CO. ARPT (LDM) 3/4 MILE EAST. ACFT OPER. IN VICINITY MONITOR CTAF 123.0.","new":"MASON COUNTY LDM 3/4 MI E; AWOS - 119.925. OPS INVOF MNT CTAF 123.0."}]},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"b3ed7508a11f","priority":"action","category":"runway","kind":"changed","summary":"runway H1: length: 79 -> 44 ft; width: 49 -> 44 ft","source":"APT_RWY","fields":[{"field":"RWY_LEN","old":"79","new":"44"},{"field":"RWY_WIDTH","old":"49","new":"44"}]},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"c247bf399a70","priority":"fyi","category":"airport","kind":"changed","summary":"used for medical purposes: none -> yes","source":"APT_BASE","fields":[{"field":"MEDICAL_USE_FLAG","old":"","new":"Y"}]},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"c442cfa4be4f","priority":"fyi","category":"remark","kind":"added","summary":"new remark: 44 foot diameter circle.","source":"APT_RMK","original":"44 FT DIAM CRC."},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"fb8082505e06","priority":"fyi","category":"remark","kind":"removed","summary":"remark removed: LDM AWOS 3/4 mile east on frequency 119.925.","source":"APT_RMK","original":"LDM AWOS 3/4 MILE EAST, FREQ 119.925."},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"9ca356348b87","priority":"fyi","category":"remark","kind":"removed","summary":"remark removed: HELIPAD IS 44 FT. DIAMETER CONCRETE CIRCLE EAST OF BLDGS.  43-57-28.60 N;  86-25-41.68 W, ELEV 633 FT.","source":"APT_RMK","original":"HELIPAD IS 44 FT. DIAMETER CONCRETE CIRCLE EAST OF BLDGS.  43-57-28.60 N;  86-25-41.68 W, ELEV 633 FT."},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"bd14b50cf78b","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: 60-70 FT PWR LINE W; TWO POLES LGTD. 60 FT TREES 300 FT N, 65 FT E, 245 FT S.","source":"APT_RMK","original":"60-70 FT PWR LINE W; TWO POLES LGTD. 60 FT TREES 300 FT N, 65 FT E, 245 FT S.","fields":[{"field":"REMARK","old":"60-70 FT. ELECTRIC TRANSMISSION LINE WEST OF HELIPAD. TWO POLES LIGHTED.  60 FT TREES, 300 FT NORTH, 65 FT. EAST 245 FT SOUTH OF HELIPAD.","new":"60-70 FT PWR LINE W; TWO POLES LGTD. 60 FT TREES 300 FT N, 65 FT E, 245 FT S."}]},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"b8f38661bda9","priority":"fyi","category":"runway","kind":"changed","summary":"runway H1: runway end elevation: none -> 633 ft MSL","source":"APT_RWY_END","fields":[{"field":"RWY_END_ELEV","old":"","new":"633"}]}],"first_cycle":"2024-09-05","last_cycle":"2026-10-01"}