Richard Kirby Windsor, known by his middle name Kirby, was 31 when he was last seen in South Burlington, Vermont, on January 27, 1971. He boarded an Aero Commander 1121 Jet Commander, registration N400CP, departing Burlington International Airport for Providence under an instrument flight plan.

The aircraft lost radar contact a few minutes after takeoff and was never recovered at the time. Two crew and three passengers were aboard; the NTSB and aviation records state the aircraft was destroyed on impact with Lake Champlain and that the occupants were presumed fatally injured. Multiple searches over the years failed to locate significant wreckage.

In May 2024 searchers using high-resolution side-scan sonar and an underwater submersible recorded images of fragments that the NTSB found consistent with components from an Aero Commander 1121 near Juniper Island in about 200 feet of water.

If anyone knew Richard Windsor or has information about the flight or its passengers, please share what is known.