{"schema_version":1,"airport":"MKG","entries":[{"cycle":"2026-09-03","from_cycle":"2026-08-06","id":"2603484ea9fb","priority":"fyi","category":"frequency","kind":"removed","summary":"flight service (FSS) 122.5 via the Muskegon outlet no longer available","source":"FRQ"},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"2438a46509f5","priority":"ifr","category":"chart","kind":"changed","summary":"approach RNAV (GPS) RWY 06 redrawn (still amdt 2A)","source":"D-TPP","chart":{"code":"IAP","name":"RNAV (GPS) RWY 06","amdt":"2A","pdf":"https://aeronav.faa.gov/d-tpp/2607/00278R6.PDF"}},{"cycle":"2026-07-09","from_cycle":"2026-06-11","id":"5d7cbe82822a","priority":"fyi","category":"chart","kind":"changed","summary":"airport diagram changed","source":"D-TPP","chart":{"code":"APD","name":"AIRPORT DIAGRAM","amdt":"","pdf":"https://aeronav.faa.gov/d-tpp/2607/00278AD.PDF"}},{"cycle":"2026-05-14","from_cycle":"2026-04-16","id":"b7b31675b7cd","priority":"fyi","category":"runway","kind":"changed","summary":"runway 06/24: pavement now in good condition; surface treatment: porous friction course (PFC) -> saw-cut or plastic grooved (GRVD)","source":"APT_RWY","fields":[{"field":"COND","old":"FAIR","new":"GOOD"},{"field":"TREATMENT_CODE","old":"PFC","new":"GRVD"}]},{"cycle":"2025-12-25","from_cycle":"2025-11-27","id":"22ebc15bf229","priority":"action","category":"weather","kind":"changed","summary":"AWOS/ASOS phone number changed to 231-246-4419","source":"AWOS","fields":[{"field":"PHONE_NO","old":"231-798-1317","new":"231-246-4419"}]},{"cycle":"2025-06-12","from_cycle":"2025-05-15","id":"5b12f30c467e","priority":"action","category":"remark","kind":"added","summary":"new remark: 24 HR PPR FOR UNSKED ACR OPS GTR THAN 30 PAX SEATS - CALL AMGR 801-698-8187.","source":"APT_RMK","original":"24 HR PPR FOR UNSKED ACR OPS GTR THAN 30 PAX SEATS - CALL AMGR 801-698-8187."},{"cycle":"2025-06-12","from_cycle":"2025-05-15","id":"88f283134920","priority":"action","category":"remark","kind":"changed","summary":"remark updated: 24 HR PPR FOR ARFF INDEX B SVC - CALL AMGR 801-698-8187.","source":"APT_RMK","original":"24 HR PPR FOR ARFF INDEX B SVC - CALL AMGR 801-698-8187.","fields":[{"field":"REMARK","old":"24 HR PPR FOR ARFF INDEX B SVC & UNSKED ACR OPS GTR THAN 30 PAX SEATS - CALL AMGR 801-698-8187.","new":"24 HR PPR FOR ARFF INDEX B SVC - CALL AMGR 801-698-8187."}]},{"cycle":"2025-06-12","from_cycle":"2025-05-15","id":"005cacb3df3a","priority":"action","category":"remark","kind":"changed","summary":"remark updated: CLSD 2300-0600 DLY DUE TO RWY PROTECTION ZONE CONFLICT.","source":"APT_RMK","original":"CLSD 2300-0600 DLY DUE TO RWY PROTECTION ZONE CONFLICT.","fields":[{"field":"REMARK","old":"CLSD DLY 2300-0600.","new":"CLSD 2300-0600 DLY DUE TO RWY PROTECTION ZONE CONFLICT."}]},{"cycle":"2025-05-15","from_cycle":"2025-04-17","id":"499309cef989","priority":"action","category":"runway","kind":"changed","summary":"runway 06/24: length: 6501 -> 6500 ft","source":"APT_RWY","fields":[{"field":"RWY_LEN","old":"6501","new":"6500"}]},{"cycle":"2025-05-15","from_cycle":"2025-04-17","id":"77f95bc3ed1e","priority":"action","category":"navaid","kind":"changed","summary":"runway 24: ILS runway length: 6501 -> 6500 ft","source":"ILS_BASE","fields":[{"field":"RWY_LEN","old":"6501","new":"6500"}]},{"cycle":"2025-05-15","from_cycle":"2025-04-17","id":"56703d7756cd","priority":"fyi","category":"remark","kind":"removed","summary":"remark removed: This airport has been surveyed by the National Geodetic Survey.","source":"APT_RMK","original":"THIS AIRPORT HAS BEEN SURVEYED BY THE NATIONAL GEODETIC SURVEY."},{"cycle":"2025-05-15","from_cycle":"2025-04-17","id":"4b0fd18fe8aa","priority":"fyi","category":"runway","kind":"changed","summary":"runway 06: declared distances changed: takeoff run available (TORA) 6,501 ft -> 6,500 ft; takeoff distance available (TODA) 6,501 ft -> 6,500 ft; accelerate-stop distance available (ASDA) 6,501 ft -> 6,500 ft; landing distance available (LDA) 6,501 ft -> 6,500 ft; runway end elevation: 621.2 -> 620.9 ft MSL; touchdown zone elevation: 623 -> 622.5 ft MSL","source":"APT_RWY_END","fields":[{"field":"ACLT_STOP_DIST_AVBL","old":"6501","new":"6500"},{"field":"LNDG_DIST_AVBL","old":"6501","new":"6500"},{"field":"RWY_END_ELEV","old":"621.2","new":"620.9"},{"field":"TDZ_ELEV","old":"623","new":"622.5"},{"field":"TKOF_DIST_AVBL","old":"6501","new":"6500"},{"field":"TKOF_RUN_AVBL","old":"6501","new":"6500"}]},{"cycle":"2025-05-15","from_cycle":"2025-04-17","id":"a9667a8272e2","priority":"fyi","category":"runway","kind":"changed","summary":"runway 14: runway end elevation: 627.4 -> 627.2 ft MSL; touchdown zone elevation: 627.4 -> 627.2 ft MSL","source":"APT_RWY_END","fields":[{"field":"RWY_END_ELEV","old":"627.4","new":"627.2"},{"field":"TDZ_ELEV","old":"627.4","new":"627.2"}]},{"cycle":"2025-05-15","from_cycle":"2025-04-17","id":"22f0d833c9cd","priority":"fyi","category":"runway","kind":"changed","summary":"runway 24: declared distances changed: takeoff run available (TORA) 6,501 ft -> 6,500 ft; takeoff distance available (TODA) 6,501 ft -> 6,500 ft; accelerate-stop distance available (ASDA) 6,501 ft -> 6,500 ft; landing distance available (LDA) 6,501 ft -> 6,500 ft; runway end elevation: 626.5 -> 626.2 ft MSL; touchdown zone elevation: 627 -> 626.5 ft MSL","source":"APT_RWY_END","fields":[{"field":"ACLT_STOP_DIST_AVBL","old":"6501","new":"6500"},{"field":"LNDG_DIST_AVBL","old":"6501","new":"6500"},{"field":"RWY_END_ELEV","old":"626.5","new":"626.2"},{"field":"TDZ_ELEV","old":"627","new":"626.5"},{"field":"TKOF_DIST_AVBL","old":"6501","new":"6500"},{"field":"TKOF_RUN_AVBL","old":"6501","new":"6500"}]},{"cycle":"2025-05-15","from_cycle":"2025-04-17","id":"f38853f9e58a","priority":"fyi","category":"runway","kind":"changed","summary":"runway 32: runway end elevation: 628.5 -> 628.2 ft MSL; touchdown zone elevation: 628.5 -> 628.2 ft MSL","source":"APT_RWY_END","fields":[{"field":"RWY_END_ELEV","old":"628.5","new":"628.2"},{"field":"TDZ_ELEV","old":"628.5","new":"628.2"}]}],"first_cycle":"2025-05-15","last_cycle":"2026-09-03"}