BOISE, Idaho -

Teams on the ground and in aircraft are searching again for five people who were aboard a plane that disappeared Sunday in the mountains of central Idaho.
    
Crews are looking for a single-engine Beech Bonanza piloted by Dale Smith, a 51-year-old software executive from San Jose, Calif. Smith was traveling from eastern Oregon to Butte, Mont., Sunday when he reported engine trouble over Idaho's vast backcountry.
    
Passengers on board included Smith's son and his wife, along with Smith's daughter and her fiance.
    
Officials say ground crews that have been searching the backcountry rested overnight near the remote town of Yellow Pine. They will focus Thursday on drainages east of the Johnson Creek landing strip.
    
Commanders seeking to take advantage of clear skies are also dispatching five airplanes.