Park County sheriff’s officials say the 1963 Mooney M20C was last seen Tuesday departing Yellowstone Regional Airport in Cody. On board were brothers Ward H. Zimmerman, 86, of Seattle, and Robert L. Zimmerman, 84, of Huntsville, Alabama.
The brothers were headed from Cody to Twin Falls, Idaho, and from there to Seattle.
Radar last detected the plane about seven miles outside the Yellowstone east entrance in northwest Wyoming. Poor weather prevented an aerial search but searchers were on the ground in that area Sunday.
The search began after police in Idaho on Saturday asked Park County officials to check for the plane at the Cody airport.
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