Door County Sheriff Terry Vogel says the dispatch centre was told just after 5 pm Monday that a Cessna about 6 miles south of Sturgeon Bay had declared an emergency.
The pilot, an 81-year-old man from the Sturgeon Bay area, had suffered a medical emergency and was unconscious. His wife, who was the passenger, was flying the plane.
A certified pilot was able to fly alongside the plane and coach the wife. Just after 6 pm, her right engine ran out of fuel and lost power.
She was able to land at Door County Cherryland Airport. The wife suffered minor injuries. Her husband was pronounced dead.