An independent researcher found that noise recorded miles away from the site of a recent test flight was equal to standing 200 feet from a Boeing 747 during takeoff. An independent researcher found that noise recorded miles away from the site of a recent test flight was equal to standing 200 feet from a Boeing 747 during takeoff. Space Exploration Technologies Corp, Musk, Elon, Port Isabel (Tex), Brownsville (Tex), Padre Island (Tex) NYT > Science