{"schema_version":1,"airport":"MBS","entries":[{"cycle":"2026-03-19","from_cycle":"2026-02-19","id":"82acee46fad0","priority":"action","category":"runway","kind":"changed","summary":"runway 14/32: length: 6399 -> 6400 ft","source":"APT_RWY","fields":[{"field":"RWY_LEN","old":"6399","new":"6400"}]},{"cycle":"2026-03-19","from_cycle":"2026-02-19","id":"2330ba8fce62","priority":"fyi","category":"runway","kind":"changed","summary":"runway 14: declared distances changed: takeoff run available (TORA) 6,399 ft -> 6,400 ft; takeoff distance available (TODA) 6,399 ft -> 6,400 ft; accelerate-stop distance available (ASDA) 6,399 ft -> 6,400 ft; landing distance available (LDA) 6,399 ft -> 6,400 ft; runway end elevation: 667.8 -> 668.2 ft MSL; touchdown zone elevation: 668.2 -> 668.3 ft MSL","source":"APT_RWY_END","fields":[{"field":"ACLT_STOP_DIST_AVBL","old":"6399","new":"6400"},{"field":"LNDG_DIST_AVBL","old":"6399","new":"6400"},{"field":"RWY_END_ELEV","old":"667.8","new":"668.2"},{"field":"TDZ_ELEV","old":"668.2","new":"668.3"},{"field":"TKOF_DIST_AVBL","old":"6399","new":"6400"},{"field":"TKOF_RUN_AVBL","old":"6399","new":"6400"}]},{"cycle":"2026-03-19","from_cycle":"2026-02-19","id":"164089e94ff4","priority":"fyi","category":"runway","kind":"changed","summary":"runway 32: declared distances changed: takeoff run available (TORA) 6,399 ft -> 6,400 ft; takeoff distance available (TODA) 6,399 ft -> 6,400 ft; accelerate-stop distance available (ASDA) 6,399 ft -> 6,400 ft; landing distance available (LDA) 6,399 ft -> 6,400 ft; runway end elevation: 659.2 -> 659.6 ft MSL; touchdown zone elevation: 664.8 -> 664.7 ft MSL","source":"APT_RWY_END","fields":[{"field":"ACLT_STOP_DIST_AVBL","old":"6399","new":"6400"},{"field":"LNDG_DIST_AVBL","old":"6399","new":"6400"},{"field":"RWY_END_ELEV","old":"659.2","new":"659.6"},{"field":"TDZ_ELEV","old":"664.8","new":"664.7"},{"field":"TKOF_DIST_AVBL","old":"6399","new":"6400"},{"field":"TKOF_RUN_AVBL","old":"6399","new":"6400"}]},{"cycle":"2025-02-20","from_cycle":"2025-01-23","id":"e20c86b0e9ef","priority":"fyi","category":"navaid","kind":"changed","summary":"MBS navaid: remark: DME UNUSBL 195-200 BYD 25 NM. -> DME UNUSBL 185-200 BYD 14 NM.","source":"NAV_RMK","fields":[{"field":"REMARK","old":"DME UNUSBL 195-200 BYD 25 NM.","new":"DME UNUSBL 185-200 BYD 14 NM."}]},{"cycle":"2024-12-26","from_cycle":"2024-11-28","id":"4b15b6476709","priority":"action","category":"navaid","kind":"changed","summary":"MBS (Saginaw) navaid: status: OPERATIONAL IFR -> OPERATIONAL RESTRICTED","source":"NAV_BASE","fields":[{"field":"NAV_STATUS","old":"OPERATIONAL IFR","new":"OPERATIONAL RESTRICTED"}]},{"cycle":"2024-12-26","from_cycle":"2024-11-28","id":"6ee1ae243499","priority":"ifr","category":"navaid","kind":"added","summary":"new navaid remark: VOR UNUSBL 145-185 BYD 40 NM; 336-338 BYD 40 NM.","source":"NAV_RMK","original":"VOR UNUSBL 145-185 BYD 40 NM; 336-338 BYD 40 NM."},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"f475702efe1e","priority":"action","category":"navaid","kind":"changed","summary":"MBS (Saginaw) navaid: frequency changed: 112.9 -> 114.35; TACAN channel: 76X -> 90Y","source":"NAV_BASE","fields":[{"field":"CHAN","old":"76X","new":"90Y"},{"field":"FREQ","old":"112.9","new":"114.35"}]},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"27571243eff6","priority":"action","category":"frequency","kind":"removed","summary":"frequency 112.9/76X (MBS VOR/DME) removed","source":"FRQ"},{"cycle":"2024-09-05","from_cycle":"2024-08-08","id":"dba637dc2783","priority":"action","category":"frequency","kind":"added","summary":"frequency 114.35/90Y (MBS VOR/DME) added","source":"FRQ"}],"first_cycle":"2024-09-05","last_cycle":"2026-03-19"}