{"schema_version":1,"airport":"15MI","entries":[{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"7eaad77941f2","priority":"action","category":"frequency","kind":"added","summary":"frequency 122.9 (CTAF) added","source":"FRQ"},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"76828375c6a2","priority":"action","category":"remark","kind":"changed","summary":"remark updated: For CD contact SELFRIDGE approach at 586-239-5706; when approach is closed contact DETROIT approach at 734-955-1404.","source":"APT_RMK","original":"FOR CD CTC SELFRIDGE APCH AT 586-239-5706, WHEN APCH CLSD CTC DETROIT APCH AT 734-955-1404.","fields":[{"field":"REMARK","old":"FOR CD CTC CLEVELAND ARTCC AT 440-774-0490.","new":"FOR CD CTC SELFRIDGE APCH AT 586-239-5706, WHEN APCH CLSD CTC DETROIT APCH AT 734-955-1404."}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"35ec58a65986","priority":"fyi","category":"airport","kind":"changed","summary":"direction from the city's business district: NE -> ENE","source":"APT_BASE","fields":[{"field":"DIRECTION_CODE","old":"NE","new":"ENE"}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"61963a8e5d72","priority":"fyi","category":"airport","kind":"changed","summary":"name changed: Grant Industries, Inc. -> Grant Industries, Inc; airport contact zip+4: none -> 4203","source":"APT_CON","fields":[{"field":"NAME","old":"GRANT INDUSTRIES, INC.","new":"GRANT INDUSTRIES, INC"},{"field":"ZIP_PLUS_FOUR","old":"","new":"4203"}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"f8ba0900f537","priority":"fyi","category":"remark","kind":"added","summary":"new remark: Rooftop.","source":"APT_RMK","original":"ROOFTOP."},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"f7ecde5fd0cc","priority":"fyi","category":"remark","kind":"removed","summary":"remark removed: (A33) ROOFTOP.","source":"APT_RMK","original":"(A33) ROOFTOP."},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"7f0da52026a8","priority":"fyi","category":"remark","kind":"changed","summary":"remark updated: PRVDD OPS ARE CONDUCTED FM 340-050 & 080-225 DEGS; AREA IS MKD; WIND INDCR IS MNTND.","source":"APT_RMK","original":"PRVDD OPS ARE CONDUCTED FM 340-050 & 080-225 DEGS; AREA IS MKD; WIND INDCR IS MNTND.","fields":[{"field":"REMARK","old":"PRVDD OPNS ARE CONDUCTED FM 340 TO 050 DEGS & FM 080 TO 225 DEGS; AREA IS MKD & WIND INDICATOR IS MAINTAINED.","new":"PRVDD OPS ARE CONDUCTED FM 340-050 & 080-225 DEGS; AREA IS MKD; WIND INDCR IS MNTND."}]},{"cycle":"2025-10-02","from_cycle":"2025-09-04","id":"99f44096ba83","priority":"fyi","category":"runway","kind":"changed","summary":"runway H1: runway end elevation: none -> 638 ft MSL","source":"APT_RWY_END","fields":[{"field":"RWY_END_ELEV","old":"","new":"638"}]}],"first_cycle":"2025-10-02","last_cycle":"2025-10-02"}