D. B. Cooper
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On November 24, 1971, an unidentified man using the alias Dan Cooper, subsequently known as D. B. Cooper, hijacked Northwest Orient Airlines Flight 305, a Boeing 727 aircraft flying from Portland, Ore
A 1972 FBI composite drawing of Dan Cooper
N467US, the aircraft involved in the hijacking, seen in 1972
Boeing 727 with the aft airstair open
Crew of Flight 305, upon landing in Reno, from left to right: Captain William Scott, co-pilot Bill Rataczak, flight attendant Tina Mucklow, and flight engineer Harold E. Anderson
Airstair
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An airstair is a set of steps built into an aircraft so that passengers and crew can get on and off without needing help from outside. The stairs are built as part of a door or are lowered from inside
D. B. Cooper
…second flight to Mexico City, with a refueling stop in Reno, Nevada. After taking off from Seattle, Cooper opened the aircraft's aft door, deployed the airstair, and parachuted to an uncertain fate over a remote, heavily wooded area of Southwest Washington. Because of a reporter's error, the aircraft hijacker…
DC-3 modified with a simple airstair
3-section folding airstair on a "Combi" 737-200 aircraft of Alaska Airlines
George W. Bush boards a VC-25 using the lower-level airstair.