Bois Blanc Island (6Y1) is a public-use airport serving Bois Blanc Island, Michigan, at 664 feet above sea level, with CTAF 122.9. Its runways: 10/28 (3,498 × 75 ft, asphalt).
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 6Y1.