On the afternoon of 24 November 1971, a man claiming to be Dan Cooper arrived at Portland International Airport. The man boarded a flight to Seattle. Once the plane was in the air, he told one of the flight attendants that he was carrying a bomb. He asked for a ransom of US 200,000 and four parachutes. When the plane landed in Seattle, the parachutes and money were brought onto the plane. Cooper allowed the other passengers to leave, and then told the pilot to take him to Mexico.