The wife had served her husband, the pilot, with a restraining order (meaning keep away from me) the day before. She then took her daughter and moved into a hotel. The next day, the husband/pilot made several low passes over the house, and then aimed his plane straight in. The resulting crash and fire obliterated the large and expensive residence, with just the foundation remaining.
Neighbors in Delaware, where the family had lived before moving to New Hampshire, described him as strange and secretive, so much so that they began to think he was in the FBI's witness protection program.