Answer
Plane crash: John F. Kennedy Jr. died in a plane crash on July 16, 1999, along with his wife Carolyn Bessette-Kennedy and her sister Lauren Bessette. The plane, a Piper Saratoga II HP, crashed into the Atlantic Ocean off the coast of Martha's Vineyard, Massachusetts. The cause of the crash was determined to be pilot error, as Kennedy was flying the plane at night and in poor weather conditions.