CASCADE, Idaho -- A small plane with four people on board crashed on Saturday near the Bear Valley area in eastern Valley County.

Authorities say the 1947 Stinson 108 was piloted by 38-year-old Leslie Gropp, along with co-pilot, 41-year-old Nathan Williams. The plane's passengers were Gropp's son, Tol Gropp, and Alexander Arhets.

According to the Valley County Sheriff's Office, the crash happened around 3:30 p.m. near the intersection of Forest Service Roads 579 and 582.

In a news release, Lt. Dan Smith said both Leslie Gropp and Williams were transported by helicopter to St. Luke's Hospital in Boise.

Williams was treated and released. Gropp is currently listed in stable condition with serious facial injuries. Gropp's son and Arehts were not seriously injured.

Valley County Sheriff's Deputies say the 1947 Stinson appeared to have a difficult time taking-off from the rural airstrip, and clipped its landing gear on a tree, causing it to flip and crash.

Emergency units from Valley County, Custer County, Boise National Forest Service, Crouch and the Idaho Air National Guard responded.

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