Odd sounds, altitude struggles seen before small plane crash

SALT LAKE CITY — A plane that slammed onto I-15 in Riverdale July 26 started making strange sounds during takeoff and apparently struggled to stay at altitude before the crash that killed four people, according to a report from federal investigators.The plane carrying four friends on vacation crashed four seconds after pilot Layne Clarke radioed to tell air traffic controllers he was going down, according to the preliminary report by the National Transportation Safety Board.A final determi