Roslyn was a biplane, specifically designed for crop dusting. It was an older model, described by Atticus Rosenbloom as old during the time of the Red Baron. Roslyn was owned by Penobscot Agricultural Aviation, but was commandeered by Amy Cahill and Jake Rosenbloom to spray serum antidote over the All-American Clambake. The plane accomplished this mission, but was destroyed when Jake crashed it off the coast of Pierce Landing.