Dave Shapiro, a groundbreaking music executive in the heavy metal and hard rock scene, has died in a San Diego plane crash. He was 42.

Federal investigators on Friday were combing a San Diego neighborhood a day after a private jet carrying a music executive and five others crashed there and are presumed dead.

The National Transportation Safety Board is examining a mix of clues and said the aircraft did not have a flight data recorder, which would have provided more information.