D.B. Cooper, criminal who in 1971 hijacked a commercial plane traveling from Portland, Oregon, to Seattle, Washington, and later parachuted out of the aircraft with the ransom money. An extensive manhunt ensued, but the hijacker was never identified or caught, resulting in one of the greatest unsolved mysteries in U.S history. The man used the alias Dan Cooper, but, in the subsequent news reporting, a reporter misheard the name as D.B. Cooper, which became widely used.
On November 24, 1971, the day before Thanksgiving, a “nondescript” man who appeared to be in his mid-40s and about 6 feet tall (1.83 metres) bought a $20 ticket for Northwest Orient Airlines Flight 305. He gave his name as Dan Cooper, which later turned out to be fake. Shortly after takeoff from Portland, he handed a note to a flight attendant in which he claimed to have a bomb in his briefcase. He then proceeded to open the attaché case, which contained numerous wires, red sticks, and a battery. Cooper demanded four parachutes and $200,000 in $20 bills (worth about $1.2 million in the early 21st century).
After the flight landed in Seattle, Cooper released the 36 passengers when authorities provided the money and parachutes. However, he forced two pilots, a flight engineer, and a flight attendant to remain on the plane. After it refueled, he ordered the pilots to fly to Mexico City. Per his instructions, the plane flew under 10,000 feet at a speed slower than 200 knots. Around 8:00 PM, while between Seattle and Reno, Nevada—widely believed to be near Ariel, Washington—Cooper lowered the rear steps and jumped. He then disappeared.
