D.B. Cooper

In 2020 John Dower made the documentary The Mystery of D.B. Cooper about the case.

Rackstraw died on July 9, 2019 from a heart condition.

A June 2018 article circulated claiming private investigators "decoded" a previously publicly unknown letter on file with the FBI, which purportedly includes a disguised confession.

In 2017, a group of volunteer investigators uncovered what they believe to be "potential evidence, what appears to be a decades-old parachute strap" in the Pacific Northwest. This was followed later in August 2017 with a piece of foam, suspected of being part of Cooper's backpack.

The FBI officially suspended active investigation of the case in July 2016, but the agency continues to request that any physical evidence that might emerge related to the parachutes or the ransom money be submitted for analysis.

During refueling, Cooper outlined his flight plan to the cockpit crew: a southeast course toward Mexico City at the minimum airspeed possible without stalling the aircraft—approximately 100 knots (185 km/h; 115 mph)—at a maximum 10,000-foot (3,000 m) altitude. He further specified that the landing gear remain deployed in the takeoff/landing position, the wing flaps be lowered 15 degrees, and the cabin remain unpressurized. Copilot William J. Rataczak informed Cooper that the aircraft's range was limited to approximately 1,000 miles (1,600 km) under the specified flight configuration, which meant that a second refueling would be necessary before entering Mexico. Cooper and the crew discussed options and agreed on Reno, Nevada, as the refueling stop. Cooper further directed that the aircraft take off with the rear exit door open and its staircase extended. Northwest's home office objected, on grounds that it was unsafe to take off with the aft staircase deployed. Cooper countered that it was indeed safe, but he would not argue the point; he would lower it once they were airborne.

FBI agents assembled the ransom money from several Seattle-area banks – 10,000 unmarked 20-dollar bills, most with serial numbers beginning with the letter "L" indicating issuance by the Federal Reserve Bank of San Francisco, and most from the 1963A or 1969 series – and made a microfilm photograph of each of them. Cooper rejected the military-issue parachutes offered by McChord AFB personnel, instead demanding civilian parachutes with manually operated ripcords. Seattle police obtained them from a local skydiving school.

In November 2011, Kaye announced that particles of pure (unalloyed) titanium had also been found on the tie. He explained that titanium, which was much rarer in the 1970s than in the 2010s, was at that time found only in metal fabrication or production facilities, or at chemical companies using it (combined with aluminum) to store extremely corrosive substances. The findings suggested that Cooper might have been a chemist or a metallurgist, or possibly an engineer or manager (the only employees who wore ties in such facilities at that time) in a metal or chemical manufacturing plant, or at a company that recovered scrap metal from those types of factories.

In March 2009, the FBI disclosed that Tom Kaye, a paleontologist from the Burke Museum of Natural History and Culture in Seattle, had assembled a team of "citizen sleuths", including scientific illustrator Carol Abraczinskas and metallurgist Alan Stone. The group, eventually known as the Cooper Research Team, reinvestigated important components of the case using GPS, satellite imagery, and other technologies unavailable in 1971. Although they gained little new information about the buried ransom money or Cooper's landing zone, they were able to find and analyze hundreds of minute particles on Cooper's tie using electron microscopy. Lycopodium spores (likely from a pharmaceutical product) were identified, as well as fragments of bismuth and aluminum.

In late 2007, the FBI announced that a partial DNA profile had been obtained from three organic samples found on Cooper's clip-on tie in 2001, though they later acknowledged that there is no evidence that the hijacker was the source of the sample material. "The tie had two small DNA samples, and one large sample," said Special Agent Fred Gutt. "It's difficult to draw firm conclusions from these samples." The Bureau also made public a file of previously unreleased evidence, including Cooper's 1971 plane ticket (price: $20.00, paid in cash), and posted previously unreleased composite sketches and fact sheets, along with a request to the general public for information which might lead to Cooper's positive identification.

The Bureau was more skeptical, concluding that Cooper lacked crucial skydiving skills and experience. "We originally thought Cooper was an experienced jumper, perhaps even a paratrooper," said Special Agent Larry Carr, leader of the investigative team from 2006 until its dissolution in 2016. "We concluded after a few years this was simply not true. A Boeing 727 at flaps 15 degrees and light weight probably flies at 150 knots or 172 mph. No experienced parachutist would have jumped in the pitch-black night, in the rain, with a 172 mph wind in his face wearing loafers and a trench coat. It was simply too risky. He also missed that his reserve parachute was only for training and had been sewn shut, something a skilled skydiver would have checked." He also failed to bring or request a helmet, chose to jump with the older and technically inferior of the two primary parachutes supplied to him, and jumped into a probable 15 °F (−9 °C) wind at 10,000 feet (3,000 m) in November over Washington state without proper protection against the extreme wind chill.

In 2003, a Minnesota resident named Lyle Christiansen watched a television documentary about the Cooper hijacking and became convinced that his late brother Kenneth (1926–1994) was Cooper. After repeated futile attempts to convince first the FBI, and then the author and film director Nora Ephron (whom he hoped would make a movie about the case), he contacted a private investigator in New York City. In 2010 the detective, Skipp Porteous, published a book postulating that Christiansen was the hijacker. The following year, an episode of the History series Brad Meltzer's Decoded also summarized the circumstantial evidence linking Christiansen to the Cooper case.

Dayton claimed to have staged the Cooper hijacking two years later, dressed as a man, to "get back" at the airline industry and the FAA, whose insurmountable rules and conditions had prevented her from becoming an airline pilot. Dayton said that the ransom money was hidden in a cistern near Woodburn, a suburban area south of Portland, but eventually recanted the entire story, ostensibly after learning that hijacking charges could still be brought. The FBI has never commented publicly on Dayton, who died in 2002.

The FBI eliminated Weber as an active suspect in July 1998 when his fingerprints did not match any of those processed in the hijacked plane, and no other direct evidence could be found to implicate him. Later, his DNA also failed to match the samples recovered from Cooper's tie, though the bureau has since conceded that they cannot be certain that the organic material on the tie came from Cooper.

Christiansen reportedly had purchased a house with cash a few months after the hijacking. While dying of cancer in 1994, he told Lyle, "There is something you should know, but I cannot tell you." Lyle said he never pressed his brother to explain. After Christiansen's death, family members discovered gold coins and a valuable stamp collection, along with over $200,000 in bank accounts. They also found a folder of Northwest Orient news clippings which began about the time he was hired in the 1950s, and stopped just before the date of the hijacking, although the hijacking was by far the most momentous news event in the airline's history. Christiansen continued to work part-time for the airline for many years after 1971, but apparently never clipped another Northwest news story.

Three major pieces of evidence were left on the plane when D.B. Cooper jumped: his black clip-on tie, a mother-of-pearl tie clip, and eight filter-tipped Raleigh cigarette butts. The information about the tie and tie clip was not announced to the public for almost 20 years, when in 1991 it was revealed in the book D.B. Cooper: The Real McCoy. At some time after the hijacking, the cigarette butts were lost.

Research by Internet web sleuths later uncovered proof that Christiansen did not pay cash for the house he bought after the hijacking, but had a mortgage on it, and took 17 years to pay it off. The same search also uncovered proof that Christiansen had sold off almost two dozen acres of land for $17,000 per acre in the mid 1990s, thus accounting for the large sum of money in his account at the time of his death.

In 1988, Gossett changed his name to "Wolfgang" and became a Roman Catholic priest, which Cook and others interpreted as an effort to disguise his identity. Other circumstantial evidence includes testimony that Cook claims to have obtained from William Mitchell, a passenger on the hijacked aircraft, regarding a mysterious "physical detail" (which he will not divulge) common to the hijacker and Gossett. Cook also claims to have found "possible links" to Gossett in each of four letters signed by "D.B. Cooper" and mailed to three newspapers within days after the hijacking, although there is no evidence that the actual hijacker created or mailed any of the letters.

In 1986, after protracted negotiations, the recovered bills were divided equally between Ingram and Northwest Orient's insurer; the FBI retained fourteen examples as evidence. Ingram sold fifteen of his bills at auction in 2008 for about $37,000.

Cooper has appeared in the story lines of the television series Prison Break, The Blacklist, NewsRadio, Leverage, Journeyman, Renegade, Numb3rs, 30 Rock, and Drunk History, as well as the 1981 film The Pursuit of D. B. Cooper, the 2004 film Without a Paddle, and a book titled The Vesuvius Prophecy, based on The 4400 TV series.

Numerous theories of widely varying plausibility have been proposed over the years by investigators, reporters, and amateur enthusiasts. A young boy discovered a small cache of banknotes from the ransom along the banks of the Columbia River in February 1980. The find triggered renewed interest but ultimately only deepened the mystery, and the great majority of the ransom remains unrecovered.

Jo then recalled, in retrospect, that Weber once had a nightmare during which he talked in his sleep about jumping from a plane, leaving his fingerprints on the "aft stairs". He also reportedly told her that an old knee injury had been incurred by "jumping out of a plane". Like the hijacker, Weber drank bourbon and chain smoked. Other circumstantial evidence included a 1979 trip to Seattle and the Columbia River, during which Weber took a walk alone along the river bank in the Tina Bar area; four months later Brian Ingram made his ransom cash discovery in the same area.

In November 1978, a placard printed with instructions for lowering the aft stairs of a 727 was found by a deer hunter near a logging road about 13 miles (21 km) east of Castle Rock, Washington, well north of Lake Merwin, but within Flight 305's basic flight path.

In 1976, discussion arose over impending expiration of the statute of limitations on the hijacking. Most published legal analyses agreed that it would make little difference, as interpretation of the statute varies considerably from case to case and court to court, and a prosecutor could argue that Cooper had forfeited immunity on any of several valid technical grounds. The question was rendered irrelevant in November when a Portland grand jury returned an indictment in absentia against "John Doe, aka Dan Cooper" for air piracy and violation of the Hobbs Act. The indictment formally initiated prosecution that can be continued, should the hijacker be apprehended, at any time in the future.

Coffelt's account was reviewed by the FBI, which concluded that it differed in several details from information that had not been made public, and was therefore a fabrication. Brown, undeterred, continued peddling the story long after Coffelt died in 1975. Multiple media venues, including the CBS news program 60 Minutes, considered and rejected it. In a 2008 book about Lincoln's descendants, author Charles Lachman revisited Coffelt's tale, although it had been discredited thirty-six years before.

But the "free-floating" hypothesis presented its own difficulties; it did not explain the ten bills missing from one packet, nor was there a logical reason that the three packets would have remained together after separating from the rest of the money. Physical evidence was incompatible with geologic evidence: Himmelsbach observed that free-floating bundles would have had to wash up on the bank "within a couple of years" of the hijacking; otherwise the rubber bands would have long since deteriorated, an observation confirmed experimentally by the Cooper Research Team (see Subsequent FBI disclosures above). Geological evidence suggested that the bills arrived at Tina Bar well after 1974, the year of a Corps of Engineers dredging operation on that stretch of the river. Geologist Leonard Palmer of Portland State University found two distinct layers of sand and sediment between the clay deposited on the riverbank by the dredge and the sand layer in which the bills were buried, indicating that the bills arrived long after dredging had been completed. The Cooper Research Team later challenged Palmer's conclusion, citing evidence that the clay layer was a natural deposit. That finding, if true, favors an arrival time of less than one year after the event (based on the rubber band experiment), but does not help to explain how the bundles got to Tina Bar, nor from where they came.

In early 1973, with the ransom money still missing, The Oregon Journal republished the serial numbers and offered $1,000 to the first person to turn in a ransom bill to the newspaper or any FBI field office. In Seattle, the Post-Intelligencer made a similar offer with a $5,000 reward. The offers remained in effect until Thanksgiving 1974, and though there were several near-matches, no genuine bills were found. In 1975 Northwest Orient's insurer, Global Indemnity Co., complied with an order from the Minnesota Supreme Court and paid the airline's $180,000 claim on the ransom money.

Shortly after the spring thaw in early 1972, teams of FBI agents aided by some 200 Army soldiers from Fort Lewis, along with Air Force personnel, National Guardsmen, and civilian volunteers, conducted another thorough ground search of Clark and Cowlitz counties for eighteen days in March, and then an additional eighteen days in April. Electronic Explorations Company, a marine salvage firm, used a submarine to search the 200-foot (61 m) depths of Lake Merwin. Two local women stumbled upon a skeleton in an abandoned structure in Clark County; it was later identified as the remains of Barbara Ann Derry, a teenaged girl who had been abducted and murdered several weeks before. Ultimately, the search and recovery operation—arguably the most extensive, and intensive, in U.S. history—uncovered no significant material evidence related to the hijacking.

Dan Cooper is the pseudonym of an unidentified man who hijacked a Boeing 727 aircraft in United States airspace between Portland and Seattle on the afternoon of November 24, 1971. The man purchased his airline ticket using the alias Dan Cooper but, because of a news miscommunication, became known in popular lore as D. B. Cooper. He extorted $200,000 in ransom (equivalent to $1,260,000 in 2019) and parachuted to an uncertain fate. Despite an extensive manhunt and protracted FBI investigation, the perpetrator has never been located or identified. It remains the only unsolved case of air piracy in commercial aviation history.

Agents theorized that Cooper took his alias from a popular Belgian comic book series of the 1970s featuring the fictional hero Dan Cooper, a Royal Canadian Air Force test pilot who took part in numerous heroic adventures, including parachuting. (One cover from the series, reproduced on the FBI website, depicts test pilot Cooper skydiving in full paratrooper regalia.) Because the Dan Cooper comics were never translated into English, nor imported to the U.S., they speculated that he had encountered them during a tour of duty in Europe. The Cooper Research Team suggested the alternative possibility that Cooper was Canadian, and found the comics in Canada, where they were also sold. They noted his specific demand for "negotiable American currency", a phrase seldom if ever used by American citizens; since witnesses stated that Cooper had no distinguishable accent, Canada would be his most likely country of origin if he were not a U.S. citizen.

D. B. Cooper was born on April 14, 1958 in Contra Costa County, California, USA as Deirdre B. Williams.

Christiansen enlisted in the Army in 1944 and was trained as a paratrooper. The war had ended by the time he was deployed in 1945, but he made occasional training jumps while stationed in Japan with occupation forces in the late 1940s. After leaving the Army, he joined Northwest Orient in 1954 as a mechanic in the South Pacific, and subsequently became a flight attendant, and then a purser, based in Seattle. Christiansen was 45 years old at the time of the hijacking, but he was shorter (5 ft 8 in or 173 cm), thinner (150 pounds or 68 kg), and lighter complected than eyewitness descriptions. Christiansen smoked (as did the hijacker), and displayed a particular fondness for bourbon (the drink Cooper had requested). He was also left-handed (evidence photos of Cooper's black tie show the tie clip applied from the left side, suggesting a left-handed wearer). Schaffner told a reporter that photos of Christiansen fit her memory of the hijacker's appearance more closely than those of other suspects she had been shown, but could not conclusively identify him.

Robert Wesley Rackstraw (1943–2019) was a retired pilot and ex-convict who served on an army helicopter crew and other units during the Vietnam War. He came to the attention of the Cooper task force in February 1978, after he was arrested in Iran and deported to the U.S. to face explosives possession and check kiting charges. Several months later, while released on bail, Rackstraw attempted to fake his own death by radioing a false mayday call and telling controllers that he was bailing out of a rented plane over Monterey Bay. Police later arrested him in Fullerton on an additional charge of forging federal pilot certificates; the plane he claimed to have ditched was found, repainted, in a nearby hangar. Cooper investigators noted his physical resemblance to Cooper composite sketches (although he was only 28 in 1971), military parachute training, and criminal record, but eliminated him as a suspect in 1979 after no direct evidence of his involvement could be found.

McCoy (1942–1974) was an Army veteran who served two tours of duty in Vietnam, first as a demolition expert, and later, with the Green Berets as a helicopter pilot. After his military service he became a warrant officer in the Utah National Guard and an avid recreational skydiver, with aspirations, he said, of becoming a Utah State Trooper.

Theodore Ernest Mayfield (1935–2015) was a Special Forces veteran, pilot, competitive skydiver, and skydiving instructor who served time in 1994 for negligent homicide after two of his students died when their parachutes failed to open. Later, he was found indirectly responsible for thirteen additional skydiving deaths due to faulty equipment and training. His criminal record also included armed robbery and transportation of stolen aircraft. In 2010, he was sentenced to three years' probation for piloting a plane 26 years after losing his pilot's license and rigging certificates. He was suggested repeatedly as a suspect early in the investigation, according to FBI Agent Ralph Himmelsbach, who knew Mayfield from a prior dispute at a local airport. He was ruled out, based partly on the fact that he called Himmelsbach less than two hours after Flight 305 landed in Reno to volunteer advice on standard skydiving practices and possible landing zones.

Walter R. Reca (born Peca; 1933–2014) was a Michigan native, a military veteran and original member of the Michigan Parachute Team. He was proposed as a suspect by his friend Carl Laurin, a former commercial airline pilot and expert parachuter himself, at a press conference on May 17, 2018. In 2008, Reca confessed to being D.B. Cooper to Laurin via a recorded phone call. In July 2018, Principia Media released a four-part documentary detailing their investigation.

L.D. Cooper (1931–1999), a leather worker and Korean War veteran, was proposed as a suspect in July 2011 by his niece, Marla Cooper. As an eight-year-old, she recalled Cooper and another uncle planning something "very mischievous", involving the use of "expensive walkie-talkies", at her grandmother's house in Sisters, Oregon, 150 miles (240 km) southeast of Portland. The next day flight 305 was hijacked; and though the uncles ostensibly were turkey hunting, L.D. Cooper came home wearing a bloody shirt—the result, he said, of an auto accident. Later, she said, her parents came to believe that L.D. Cooper was the hijacker. She also recalled that her uncle, who died in 1999, was obsessed with the Canadian comic book hero Dan Cooper (see Theories and conjectures), and "had one of his comic books thumbtacked to his wall"—although he was not a skydiver or paratrooper.

William Pratt Gossett (1930–2003) was a Marine Corps, Army, and Army Air Forces veteran who saw action in Korea and Vietnam. His military experience included advanced jump training and wilderness survival. After retiring from military service in 1973, he worked as an ROTC instructor, taught military law at Weber State University in Ogden, Utah, and hosted a radio talk show in Salt Lake City that featured discussions about the paranormal. He died in 2003.

Barbara Dayton (1926–2002), a recreational pilot and University of Washington librarian, who was born Robert Dayton, served in the U.S. Merchant Marine and then the Army during World War II. After discharge, Dayton worked with explosives in the construction industry and aspired to a professional airline career, but could not obtain a commercial pilot's license.

John Emil List (1925–2008) was an accountant, World War II and Korean War veteran who murdered his wife, three teenage children, and 85-year-old mother in Westfield, New Jersey, fifteen days before the Cooper hijacking, withdrew $200,000 from his mother's bank account, and disappeared. He came to the attention of the Cooper task force due to the timing of his disappearance, multiple matches to the hijacker's description, and the reasoning that "a fugitive accused of mass murder has nothing to lose." After his capture in 1989, List admitted to murdering his family, but denied any involvement in the Cooper hijacking. Although his name continues to crop up in Cooper articles and documentaries, no substantial evidence implicates him, and the FBI no longer considers him a suspect. He died in prison in 2008.

Duane L. Weber (1924–1995) was a World War II Army veteran who served time in at least six prisons from 1945 to 1968 for burglary and forgery. He was proposed as a suspect by his widow, based primarily on a deathbed confession: Three days before he died in 1995, Weber told his wife Jo, "I am Dan Cooper." The name meant nothing to her, she said; but months later, a friend told her of its significance in the hijacking. She went to her local library to research D.B. Cooper, found Max Gunther's book, and discovered notations in the margins in her husband's handwriting.

The pilot, William A. Scott (1920–2001) contacted Seattle–Tacoma Airport air traffic control, which informed local and federal authorities. The 35 other passengers were given false information that their arrival in Seattle would be delayed because of a "minor mechanical difficulty". Northwest Orient's president, Donald Nyrop, authorized payment of the ransom, and ordered all employees to cooperate fully with the hijacker's demands. The aircraft circled Puget Sound for approximately two hours to allow Seattle police and the FBI sufficient time to assemble Cooper's parachutes and ransom money, and to mobilize emergency personnel.