Mackinac County (83D) is a public-use airport serving St. Ignace, Michigan, at 623 feet above sea level, with CTAF 122.7. Its runways: 07/25 (3,800 × 75 ft, concrete).
This diagram plots every runway from the FAA’s surveyed threshold coordinates, so it sits at true heading and true length — a gift for the pilots, students, instructors and families of 83D.


