For Boeing, the Paris Air Show has been a chance to listen to the industry, one Boeing executive says. "What do they think of us? It doesn’t matter what we think of us.”

The preliminary finding gives investigators a new line of inquiry as they study a crash that killed all but one of the plane’s passengers.

The crash of a Boeing 787 passenger jet in India minutes after takeoff on Thursday is the latest incident that adds to woes at the troubled U.S. planemaker.