A small plane crashed into power lines in Oregon late Saturday afternoon and killed all three people on board, police said. Polk County emergency services received the report of the single-engine plane crash in Independence around 4:55 pm, the Independence Police Department said in a statement posted on social media.A small plane crashed into power lines in Oregon late Saturday afternoon and killed all three people on board, police said. Polk County emergency services received the report of the single-engine plane crash in Independence around 4:55 pm, the Independence Police Department said in a statement posted on social media.