The search for a light plane missing since Wednesday on a flight from Burley, Idaho, to Chandler, Ariz., is now focusing on Utah's national parks and the Lake Powell area.

Utah Civil Air Patrol Lt. Ron Lillie said Friday morning there have been no definite leads on the whereabouts of the pilot, Sherman Flake, about 52, or his son, Scott, about 19, both of Chandler.The two were last seen taking off in a Piper Tri-Pacer at 10 a.m. Wednesday from Fillmore, where the plane had landed on a dirt road, taxied up to convenience store, and filled its tanks with automobile gasoline before taking off again.

Lillie said 16 CAP planes from Utah and 10 from Arizona were searching for the plane Friday morning.

"We're going to shift a little of our focus to the national parks and the Lake Powell area. Originally, (the Flakes) weren't scheduled to be home until next Tuesday," Lillie said.

Earlier reports that wreckage from a plane may have been sighted was in error, Lillie said. An Army helicopter from Dugway Proving Ground landed Friday morning at the site, a mountaintop near Fillmore. Personnel aboard discovered that what was thought to be debris from the plane was actually discarded camping gear.