The DB Cooper Hijacking
On November 24, 1971, a man calling himself Dan Cooper bought a one-way airline ticket in Portland, Oregon.
He was not looking for a seat on an ordinary flight.
He was preparing to disappear.
The aircraft was Northwest Orient Airlines Flight 305, a Boeing 727 bound for Seattle. There were 36 passengers and six crew members aboard. Shortly after takeoff, Cooper told a flight attendant that he had a bomb in his briefcase. He demanded $200,000 in twenty-dollar bills and four parachutes.
The authorities complied.
In Seattle, the passengers were released. The aircraft then took off again with Cooper, the crew, the ransom and the parachutes still aboard. A little after 8 p.m., somewhere between Seattle and Reno, Nevada, Cooper opened the aircraft’s rear stairs and jumped into the darkness.
He was never found.
The FBI investigation that followed became known as NORJAK—Northwest Hijacking. Investigators pursued hundreds of suspects, examined physical evidence, searched the Pacific Northwest and followed leads for decades. The Bureau eventually redirected its resources away from the active investigation in 2016, while retaining the possibility of examining genuinely significant physical evidence.
More than half a century later, the DB Cooper hijacking remains one of the most enduring unsolved crimes in American history.
And there is an important correction to the name.
He never called himself D.B. Cooper.
The ticket was purchased under the name Dan Cooper. The “D.B.” designation appears to have originated with press coverage and subsequently became the name by which the mystery entered popular culture.
Background
America in the Age of the Skyjacking
The DB Cooper hijacking did not occur in a vacuum.
By the early 1970s, aircraft hijackings had become a serious problem in the United States. Commercial aviation security was considerably less intrusive than it would become later in the century. The Federal Aviation Administration had already been developing anti-hijacking measures, including passenger screening systems, in response to the rise in aircraft piracy.
The environment was therefore changing, but the modern security architecture familiar to today’s airline passengers did not yet exist.
That distinction matters.
Cooper did not defeat the security system passengers know today. He operated in an era before the widespread security procedures that later became routine.
The aircraft itself also mattered.
Northwest Orient Flight 305 was a Boeing 727. The aircraft’s distinctive rear airstair allowed a person to leave the aircraft while it was airborne under particular operating conditions. Cooper’s demands included a relatively low altitude and slow airspeed, conditions that made the rear stairs usable.
The hijacker apparently knew enough about the aircraft to exploit that feature.
Exactly how much he knew—and how he acquired that knowledge—remains one of the central questions of the case.
Who Was Dan Cooper?
Almost nothing about the man’s real identity has been established with certainty.
Investigators assembled descriptions from the people who encountered him. The FBI’s 1972 Law Enforcement Bulletin described him as a white male, approximately 5 feet 10 inches to 6 feet tall, weighing around 170 to 180 pounds, with dark hair and brown or possibly black hair, and an olive complexion. He was described as intelligent and articulate.
He wore a business suit, white shirt and dark tie.
He also wore sunglasses later during the flight.
These details became the foundation for one of the most recognizable composite images in criminal history.
But a composite sketch is not an identification.
It is an investigative tool built from human memory.
That distinction would become increasingly important as investigators accumulated suspects.
Timeline of Events
November 24, 1971 — Portland
On the afternoon before Thanksgiving, a man using the name Dan Cooper purchased a one-way ticket from Portland to Seattle.
He paid cash.
The flight was Northwest Orient Flight 305.
According to the FBI’s historical account, Cooper appeared to be a quiet, middle-aged man dressed in a business suit. He ordered bourbon and soda while waiting for departure.
He boarded with a black attaché case.
Nothing about him immediately suggested what was about to happen.
Shortly After Takeoff — The Threat
After the aircraft was airborne, Cooper handed a flight attendant a note.
He indicated that he had a bomb.
When she initially treated the note as possibly insignificant, Cooper made the threat explicit. He opened his briefcase and showed her what appeared to be wires and red-colored objects.
Whether the device was actually a functioning bomb has never been established.
Investigators had to treat it as real.
Cooper’s demands were clear: $200,000 in twenty-dollar bills and four parachutes.
The ransom was not an arbitrary number. Cooper wanted the money in negotiable U.S. currency, and the FBI recorded the serial numbers so the bills could later be identified.
That decision would become important nine years later.
The Flight Circles Seattle
Instead of landing immediately, Flight 305 remained airborne while authorities assembled the ransom and parachutes.
The situation had now become a controlled negotiation.
The crew continued communicating with authorities on the ground while Cooper waited.
There were 36 passengers aboard.
The immediate objective for the airline and law enforcement was not to catch the hijacker in spectacular fashion. It was to get everyone safely onto the ground.
That priority shaped almost every decision that followed.
Seattle — The Exchange
When Flight 305 landed at Seattle-Tacoma Airport, the ransom and parachutes were brought aboard.
Cooper released the passengers.
Several crew members remained with him.
The aircraft was refueled.
Cooper then outlined the next stage of his plan.
He wanted to fly south toward Mexico City.
He also specified conditions that would allow him to use the Boeing 727’s rear airstair.
The aircraft departed Seattle again.
At that point, the passengers were gone.
The hijacker was alone with the remaining crew.
Shortly After 8 p.m. — The Jump
Somewhere between Seattle and Reno, the aircraft’s rear stairs were lowered.
The crew later noticed an indication in the cockpit associated with the rear door.
Cooper had disappeared.
He had taken the ransom money and a parachute.
The pilots continued toward Reno.
When the aircraft landed, Cooper was gone.
So was the money.
The search had begun.
Crime Scene
The “crime scene” in the DB Cooper hijacking was unusually large.
It included an airport terminal in Portland, the interior of a Boeing 727, Seattle-Tacoma Airport, the aircraft’s flight path across Washington and Oregon, and an enormous area of forest, farmland and river systems.
Unlike a conventional crime scene, there was no confirmed body, no known burial site and no established location where Cooper had landed.
There was only a probable flight path.
That difference would make the investigation extraordinarily difficult.
Flight 305
The aircraft became one of the most important pieces of physical evidence.
Investigators searched it after the hijacking.
Cooper had attempted to minimize what he left behind.
One important exception was his black J.C. Penney tie.
The tie became one of the most discussed pieces of physical evidence in the entire case. The FBI says it later provided a DNA sample.
But DNA evidence from the tie has never produced a publicly confirmed identification of Cooper.
That distinction is critical.
The existence of a biological sample is not equivalent to having a complete, uncontaminated genetic profile capable of identifying an unknown suspect.
The Parachutes
Cooper had demanded four parachutes.
The FBI’s records state that he ultimately jumped with two, including equipment that had originally been intended for instructional purposes and was not a normal operational parachute. He also used cord associated with one of the remaining parachutes to secure the ransom bag.
The unusual selection of equipment has generated decades of debate.
Was Cooper an experienced parachutist?
Did he understand exactly what he was doing?
Was the choice of parachutes evidence of specialized knowledge—or simply the decision of a man who understood enough to take the safest equipment available?
The public record does not provide a definitive answer.
Investigation
The FBI opened an investigation while the hijacking was still unfolding.
The case was designated NORJAK, short for Northwest Hijacking.
It became one of the Bureau’s longest-running investigations.
Agents interviewed witnesses, examined physical evidence, investigated tips and pursued suspects across the country. The FBI states that more than 800 suspects had been considered by the fifth anniversary of the hijacking, with all but a small number eliminated from consideration.
The investigation was complicated by one fundamental problem:
Nobody knew who they were looking for.
There was no confirmed name.
No photograph existed.
No fingerprints provided a conclusive identification.
No body was recovered.
And the largest piece of evidence—the ransom—remained missing.
The Search Area
Investigators initially concentrated on an area in southwestern Washington where they believed Cooper might have landed.
The calculation depended on the aircraft’s speed, direction, altitude, wind and the moment the rear stairs were believed to have been opened.
But each variable introduced uncertainty.
A few seconds could move the estimated landing area substantially.
Wind could alter the descent.
The exact timing of the jump could not be established with absolute precision.
And the Pacific Northwest landscape was unforgiving.
Dense forest, rivers, rugged terrain and winter weather made a search for one person extraordinarily difficult.
The FBI Redirects Resources
On July 12, 2016, the FBI announced that it was redirecting resources devoted to the active investigation toward other priorities.
The Bureau did not announce that Cooper’s identity had been discovered.
It did not declare the mystery solved.
Instead, the active investigation was effectively set aside unless new evidence emerged. The FBI specifically stated that significant physical evidence connected to the parachutes or ransom money could still be reported.
That distinction is often lost in popular retellings.
The case was not solved.
The FBI simply stopped dedicating active investigative resources to it.
The FBI Vault
The documentary record remains unusually extensive.
The FBI’s online Vault contains a large collection of files from the NORJAK investigation. The released material covers the investigation from 1971 into 1992.
The collection continues to be valuable because it allows researchers to examine not only the famous clues but also the enormous volume of investigative work that produced no definitive answer.
As of 2026, the FBI Vault also contains additional numbered Cooper files, including Part 110 and later parts. Part 110 is publicly available as an FBI document.
The existence of additional files should not be confused with a breakthrough.
More documents can reveal more about the investigation without revealing the identity of the hijacker.
Suspects
Over the years, the DB Cooper hijacking has produced a long list of suspects.
Most were eliminated.
Some became famous because they appeared to match certain aspects of the evidence.
None has been officially established as Cooper.
Richard Floyd McCoy Jr.
Richard Floyd McCoy Jr. remains one of the most famous names associated with the case.
In April 1972—less than five months after the Cooper hijacking—McCoy carried out a remarkably similar aircraft hijacking. He demanded money and parachutes and escaped from the aircraft by parachute.
The resemblance was striking.
It was also not enough.
The FBI investigated McCoy and ultimately ruled him out, citing differences between his appearance and the descriptions provided by Cooper’s witnesses, among other reasons.
McCoy therefore belongs in the history of the case as a serious investigative lead—not as a proven identity.
Other Suspects
The FBI considered hundreds of individuals.
Some were investigated because of physical resemblance.
Others had military or aviation experience.
Some had knowledge of aircraft.
Others had unexplained periods in their biographies or connections to the Pacific Northwest.
Still others came to the attention of investigators because someone believed they looked like the composite drawing.
This is where the distinction between a suspect and a proven perpetrator becomes essential.
The Cooper case generated so many theories that simply appearing on a suspect list eventually became almost meaningless.
The standard of proof never changed.
A person needed to be connected to the physical evidence, the timeline and the circumstances of the hijacking.
No suspect has met that standard publicly.
Evidence
The evidence in the DB Cooper hijacking is simultaneously extensive and frustratingly incomplete.
The Ransom Money
The strongest physical breakthrough came nine years after the hijacking.
On February 10, 1980, eight-year-old Brian Ingram discovered deteriorating twenty-dollar bills while on a family trip along the Columbia River at a location known as Tena Bar.
The money amounted to approximately $5,800.
Investigators checked the serial numbers.
They matched the ransom money supplied to Cooper.
The discovery was extraordinary.
For the first time since 1971, physical evidence definitively connected to the ransom had surfaced outside the aircraft.
But it did not answer the question investigators most wanted to resolve.
It did not reveal who put the money there.
It did not establish whether Cooper survived.
It did not prove how the bills traveled to Tena Bar.
And it did not identify the person who handled them after the hijacking.
Instead, the money created another mystery.
The Tena Bar Puzzle
The location of the money has generated competing explanations for decades.
One possibility is that the bills reached the Columbia River through natural processes.
Another is that someone deliberately placed or buried the money.
Neither explanation has been conclusively demonstrated as the answer.
The problem became even more complicated because the Tena Bar location did not correspond neatly with the FBI’s original estimated landing area.
The ransom discovery therefore weakened the idea that investigators could simply reconstruct Cooper’s fate from the initial search zone.
The money was real.
The serial numbers were real.
The explanation remained uncertain.
The Tie
Cooper’s tie is perhaps the most famous surviving physical object associated with the case.
He removed it before his disappearance and left it aboard the aircraft.
The FBI later reported that it provided a DNA sample.
The tie has also been examined for trace materials.
Such evidence has inspired theories about Cooper’s occupation and possible connections to aerospace or manufacturing.
But trace evidence is rarely as simple as it appears in popular documentaries.
A particle found on clothing can indicate exposure to a material without proving where or when that exposure occurred.
It may suggest a workplace.
It may suggest a hobby.
It may have another explanation entirely.
The correct conclusion is therefore cautious:
The tie provides evidence about the person who wore it, but it has not publicly identified that person.
Forensic Analysis
The DB Cooper hijacking is an interesting case study in the limits of forensic science.
Modern investigators often inherit evidence collected decades earlier.
That evidence was gathered under the scientific standards and investigative assumptions of its time.
DNA
The FBI’s historical account confirms that the tie produced a DNA sample.
But the existence of DNA does not automatically mean investigators possess a complete genetic identity profile.
The evidentiary value depends on factors including the quality of the biological material, contamination, handling history and whether a reliable comparison sample exists.
No publicly verified DNA match has established Cooper’s identity.
Trace Evidence
The tie has also attracted scientific attention because of microscopic material recovered from it.
Trace evidence can be valuable in forensic investigation, particularly when a material is unusual and can be associated with a specific industrial environment.
But even unusual particles rarely constitute a fingerprint.
The most responsible interpretation is probabilistic.
A trace may narrow possibilities.
It does not necessarily identify an individual.
Aircraft Knowledge
One of the strongest behavioral clues concerns Cooper’s apparent understanding of the Boeing 727.
He knew that the aircraft could be configured to permit the rear airstair to remain deployed under the conditions he specified.
That does not prove that he was an airline employee, pilot, military veteran or aerospace worker.
It demonstrates only that he possessed knowledge that proved useful during the hijacking.
Where that knowledge came from remains unknown.
Court Proceedings
There were no conventional court proceedings against Dan Cooper.
That is not a technicality.
It is central to the story.
Because the hijacker was never identified or arrested, there was no defendant to bring before a court, no trial and no conviction establishing what happened after the jump.
There were, however, important legal and regulatory consequences surrounding aircraft hijacking.
The early 1970s saw growing federal efforts to strengthen aviation security and deter aircraft piracy. The FAA’s historical record documents the rapid development of passenger screening and security programs during this period.
Federal legislation in the following years further developed the legal framework surrounding aircraft piracy and aviation security.
It would be misleading to say that the DB Cooper hijacking alone created modern airport security.
The changes were part of a much broader response to the international and domestic hijacking crisis.
But Cooper’s escape became one of the clearest demonstrations of how vulnerable commercial aviation could be.
Public Reaction
The disappearance of the hijacker created an unusual cultural phenomenon.
The crime involved no confirmed death.
The passengers survived.
The crew survived.
The hijacker vanished.
And for decades, nobody could say with certainty whether he had lived or died.
That ambiguity changed the public’s relationship with the case.
Cooper became a blank canvas.
To some, he was an exceptionally skilled parachutist.
To others, he was an ordinary man who made an extraordinary gamble.
Some theories portray him as a military veteran.
Others imagine an aerospace worker, an airline employee or a career criminal.
None has been conclusively proven.
The mystery became less about a single crime and more about an unanswered question:
What happened after the parachute disappeared into the darkness?
Media Coverage
The press played an important role in creating the identity we now recognize.
The man who boarded Flight 305 called himself Dan Cooper.
The name “D.B. Cooper” became attached to him through media reporting and persisted.
The FBI itself acknowledges that the “D.B.” name was essentially a product of the press rather than the name used by the hijacker.
That is one of the most enduring examples of how journalism can shape the historical identity of a criminal.
Over the decades, books, television documentaries, podcasts and newspaper investigations have transformed Cooper into a cultural icon.
But media attention has also created a problem.
A compelling theory can become familiar enough that familiarity begins to resemble evidence.
It is not.
Remaining Questions
The DB Cooper hijacking still leaves several fundamental questions unanswered.
Did Cooper Survive the Jump?
Nobody knows.
The FBI has suggested that Cooper may not have survived. Investigators noted the hazards associated with the nighttime jump, wooded terrain and equipment. The parachute he used was not easily steerable, and his clothing and footwear were not ideal for a difficult landing.
The discovery of ransom money in 1980 complicated the question.
If Cooper died immediately, how did the money reach Tena Bar?
If he survived, why was he never identified?
Neither scenario has been conclusively established.
Where Did He Land?
The FBI developed a probable drop zone.
But a probable drop zone is not a confirmed landing site.
The precise location has never been established.
Without that location, the search for a body, parachute or personal belongings becomes extraordinarily difficult.
Was the Bomb Real?
The object in Cooper’s briefcase appeared to be a bomb to the flight attendant who saw it.
But no public evidence has conclusively demonstrated that it was an operational explosive device.
The threat was sufficient to persuade the airline and authorities to comply.
Whether the device could actually have detonated remains uncertain.
How Much Did Cooper Know About the 727?
This remains one of the most interesting questions.
His instructions were consistent with the aircraft’s capabilities.
He understood enough about the rear stairs to make them central to his escape.
But knowing how to exploit a Boeing 727 does not automatically reveal an occupation.
The evidence supports knowledge.
It does not establish a profession.
What Happened to the Rest of the Money?
The ransom consisted of $200,000.
Only approximately $5,800 has been publicly recovered and definitively connected to the ransom through its serial numbers.
The whereabouts of the remaining money remain unknown.
If Cooper survived and kept it, he successfully concealed it.
If he died, the money may have remained hidden, been lost or been dispersed.
If another person became involved, there is no publicly proven evidence establishing who that person was.
Popular Theories
The Cooper case has generated an extraordinary number of theories.
They should be treated as theories.
Cooper Died in the Jump
This is one of the simplest explanations.
The conditions were dangerous. It was dark. The terrain below was difficult. The exact landing location was uncertain.
The FBI itself has considered the possibility that Cooper did not survive.
But no confirmed body has been found.
That does not prove survival.
It simply means death has never been demonstrated.
Cooper Was an Experienced Parachutist
His escape equipment and knowledge of the aircraft have led many researchers to believe that he had parachuting experience.
That is plausible.
It is not proven.
His decision to use two parachutes and his handling of the equipment can be interpreted in several ways.
The evidence does not identify the training organization, military unit or civilian school from which he supposedly learned.
Richard McCoy Was Cooper
This remains one of the most persistent theories.
McCoy carried out a similar hijacking only months later.
But similarity is not identity.
The FBI investigated McCoy and ruled him out.
Unless new evidence overturns that conclusion, McCoy remains a historical suspect rather than the established answer.
Cooper Was a Pacific Northwest Local
Another theory holds that Cooper knew the terrain because he lived or worked in the region.
His apparent familiarity with the landscape has encouraged this interpretation.
But again, familiarity could have resulted from many things: employment, military service, aviation experience, travel or previous residence.
There is no definitive evidence establishing which explanation is correct.
Experience Insight
The most important lesson from the DB Cooper hijacking is not that a clever criminal “beat” the FBI.
It is that investigations are constrained by evidence.
An investigator can have hundreds of suspects, thousands of interviews and mountains of paperwork and still be unable to answer one fundamental question.
Who was the man?
The Cooper case also demonstrates why forensic evidence must be interpreted conservatively.
A tie can contain DNA.
A banknote can carry a serial number.
A particle can suggest an occupation.
A witness can remember a face.
None of those pieces, standing alone, necessarily identifies a person.
The strength of forensic investigation lies in convergence: independent evidence pointing toward the same individual.
That convergence never occurred conclusively in the Cooper case.
Legacy
The legacy of the DB Cooper hijacking extends well beyond the mystery itself.
The case became part of American aviation history at a moment when aircraft security was rapidly changing.
The FAA’s historical record notes that another hijacking occurred only weeks after Cooper’s disappearance and that numerous additional extortion attempts followed in the subsequent months. Security programs evolved rapidly during this era, including passenger screening and measures intended to prevent unauthorized access to aircraft.
Cooper’s disappearance also became a lesson in investigative uncertainty.
Most crimes eventually produce an answer.
A body is found.
A suspect confesses.
A fingerprint is matched.
Money is spent.
A witness identifies someone.
The Cooper case resisted that pattern.
Instead, it left behind fragments.
A ticket.
A tie.
A handful of parachutes.
A ransom serial-number list.
A few thousand dollars discovered beside a river.
And thousands of pages documenting an investigation that never found the man it was looking for.
The FBI’s public case history remains blunt: Cooper was never found.
That is the fact around which every theory must be built.
The rest is interpretation.
What Makes the Case Endure?
Perhaps it is the absence of an ending.
There is no confirmed grave.
No final confession.
No verified photograph of Cooper after the hijacking.
No authenticated diary.
No definitive DNA identification.
No courtroom verdict.
The story simply stops.
At some point after 8 p.m. on November 24, 1971, a man stepped from the rear of a Boeing 727 into the darkness.
Everything known about him ends there.
Everything imagined about him begins afterward.
Key Takeaways
- The DB Cooper hijacking occurred on November 24, 1971.
- The hijacker purchased his ticket under the name Dan Cooper.
- He hijacked Northwest Orient Flight 305 between Portland and Seattle.
- He demanded $200,000 in twenty-dollar bills and four parachutes.
- The 36 passengers were released in Seattle after the ransom and parachutes were delivered.
- Cooper remained aboard with members of the crew.
- He subsequently parachuted from the Boeing 727 somewhere between Seattle and Reno.
- He was never conclusively identified.
- The FBI investigated the case under the name NORJAK.
- More than 800 suspects were considered during the early years of the investigation.
- A black J.C. Penney tie became an important piece of physical evidence.
- In 1980, approximately $5,800 of the ransom money was discovered at Tena Bar along the Columbia River.
- Richard Floyd McCoy Jr., one of the most famous suspects, was investigated and ruled out by the FBI.
- The FBI redirected resources away from the active case in 2016.
- Publicly available FBI records continue to document the investigation.
- No theory has conclusively established what happened to Cooper after his jump.
Frequently Asked Questions
Who was D.B. Cooper?
The identity of D.B. Cooper has never been conclusively established. The hijacker purchased his ticket under the name Dan Cooper. The “D.B.” name was later popularized by the press.
When did the DB Cooper hijacking happen?
The hijacking occurred on November 24, 1971, aboard Northwest Orient Airlines Flight 305.
How much money did DB Cooper steal?
Cooper demanded and received $200,000 in twenty-dollar bills.
Did DB Cooper survive the parachute jump?
There is no definitive answer.
The FBI has considered the possibility that he died during the jump, but no confirmed body was found. His ultimate fate remains unknown.
Was the DB Cooper bomb real?
The object in Cooper’s briefcase appeared to be a bomb, but there is no publicly established evidence proving that it was an operational explosive device.
Was Richard McCoy D.B. Cooper?
There is no definitive evidence that Richard McCoy was Cooper. The FBI investigated McCoy and ultimately ruled him out for several reasons, including differences between his appearance and witness descriptions.
How much of the ransom money was recovered?
Approximately $5,800 was found in 1980 at Tena Bar. Investigators matched its serial numbers to the ransom money.
Did the FBI solve the DB Cooper case?
No.
In 2016, the FBI announced that it was redirecting resources from the active investigation toward other priorities. The Bureau stated that significant new physical evidence could still be submitted.
Is the DB Cooper case still interesting to investigators?
The active FBI investigation was closed in 2016, but the public record remains available through the FBI Vault. Additional Cooper files, including Part 110 and later numbered files, are publicly accessible.
Why is the DB Cooper hijacking still famous?
Because it combines a documented crime with an unresolved identity and disappearance. The hijacking itself is well established. What happened afterward is not.
That distinction is what has allowed the case to remain a subject of historical and forensic investigation for more than five decades.
Conclusion
The DB Cooper hijacking is sometimes presented as a perfect crime.
It was not.
It was a real act of aircraft piracy that endangered passengers and crew and triggered a major federal investigation. Cooper left physical evidence behind. Investigators recovered part of his ransom money. Hundreds of suspects were examined. Thousands of investigative leads were pursued.
Yet the central question remains unanswered.
Who was Dan Cooper?
And did he survive the jump?
There is no definitive evidence that settles either question.
That uncertainty is not a weakness in the historical record. It is the historical record.
The most responsible account of the DB Cooper hijacking therefore ends where the evidence ends: somewhere in the darkness over the Pacific Northwest on November 24, 1971, an unidentified man disappeared from a commercial aircraft carrying a fortune in ransom money.
More than fifty years later, his name is famous.
His identity is not.
References
- D.B. Cooper Hijacking — Federal Bureau of Investigation (FBI), updated July 12, 2016.
FBI — D.B. Cooper Hijacking - FBI Vault — D.B. Cooper Records — Federal Bureau of Investigation.
FBI Vault — D.B. Cooper Files - D.B. Cooper Part 110 — Federal Bureau of Investigation, FBI Vault.
FBI Vault — D.B. Cooper Part 110 - D.B. Cooper Plane Ticket — Federal Bureau of Investigation.
FBI — D.B. Cooper Plane Ticket - Enforcement Bulletin, December 1972 — Federal Bureau of Investigation, U.S. Government Printing Office, 1972.
FBI Law Enforcement Bulletin — December 1972 - In Search of D.B. Cooper — Federal Bureau of Investigation, 2009.
FBI — In Search of D.B. Cooper - A Byte Out of History — The D.B. Cooper Mystery — Federal Bureau of Investigation, 2006.
FBI Archives — The D.B. Cooper Mystery - FAA: A Historical Perspective, 1903–2008 — Chapter 4 — Federal Aviation Administration, 2008.
FAA Historical Perspective - Task Force Deterrence of Air Piracy — Final Report — Federal Aviation Administration, Reighard H.L. and Dailey J.T., 1978.
FAA — Task Force Deterrence of Air Piracy - Constitutionality of Legislation to Establish a Program to Prevent Aircraft Piracy — U.S. Department of Justice, Office of Legal Counsel, 1973.
U.S. Department of Justice — Aircraft Piracy Opinion - The Search for D.B. Cooper — HistoryLink, Washington State Historical Encyclopedia, 2024.
HistoryLink — The Search for D.B. Cooper
Internal Linking
- [Related Article 1]
- [Related Article 2]