The Boeing 747 exploded four years ago Monday after takeoff from New York's John F. Kennedy International Airport. A private ceremony is planned to remember the 230 people who died when the plane went down off Long Island.
Loved ones gathered Sunday to break ground for a new memorial on the shore, not far from where the plane crashed.
About 50 families - some from as far away as Australia - took part.
They hope to have the memorial built by next summer. Its centerpiece will be a 12-foot granite wall with the names of the victims.