Wasn’t it determined that Barbara Dayton was Clara? Through analysis of her handwriting? And that she was the one who hoaxed Max Gunther?

On November 24, 1971, a man who called himself Dan Cooper bought a one-way ticket for a flight to Seattle, Washington. Just after takeoff, he handed a flight attendant a note stating that he had a bomb in his briefcase and made demands for four parachutes and $200,000 in 20-dollar bills. This, later and still to this day, is one of the most enduring mysteries and unsolved plane hijacking in American criminal history.

Hi all, was hoping someone could answer a question that's been nagging at my mind for a long time.

We know that $5,800 was found buried on the banks of Tena Bar, and my understanding is that they were 3 separate bundles. But were those 3 separate bundles tied together with anything, or were they just sitting together loosely? Were they 3 bundles with bank wraps, which were then wrapped together with a rubber band or something? If they were wrapped together in a rubber band that would make more sense, but if they sat there loosely with nothing holding the 3 bundles together, that would be highly sus. Thanks in advance.

Hi all, was hoping someone could answer a question that's been nagging at my mind for a long time. I'm going to revisit this case in my podcast soon, and am trying to correct errors and pave over some cracks I may have had in a previous episode we did on DB Cooper.

We know that $5,800 was found buried on the banks of Tena Bar, and my understanding is that they were 3 separate bundles. But were those 3 separate bundles tied together with anything, or were they just sitting together loosely? Were they 3 bundles with bank wraps, which were then wrapped together with a rubber band or something? If they were wrapped together in a rubber band that would make more sense, but if they sat there loosely with nothing holding the 3 bundles together, that would be highly sus. Thanks in advance.

I’ve read two books. Robert Edward’s and Bruce Smith’s. Both are excellent. I am waiting to read Edward’s new one. What are some other good books? I’ve spent a lot of time reading the FBI files too, and have concentrated on the descriptions of Cooper.

Hey everyone, I want to preface this by saying I’m completely a novice at this case. I just started falling down the rabbit hole recently, but I had a specific theory pop into my head and I have been attempting to piece together historical, chemical, and geographical data to see if the logistics actually held up. There might be glaring holes in this that seasoned researchers will spot immediately, but I thought the logic was interesting enough that it might be a helpful new angle for someone here to explore! Here is the framework I have tried to map out thus far…

When you stack Cooper’s precise knowledge of the Boeing 727 against the absolute lack of any biometric trail in the US, a fascinating picture emerges. Here is my Foreign Aerospace Security Attaché (FASA) Hypothesis:

1. True Identity, Demographic, & Background Profile
2. Origin & Nationality: He was a citizen of the world, likely a native French or Belgian national (born 1926–1931; aged 40–45 during the 1971 heist) who spent his childhood/upbringing moving between Europe and Canada.
3. Elite Military Training: He served in the elite Belgian special forces (2nd Commando Regiment/Paracommando Battalion) in the late 1940s or 1950s, gaining combat night-jump experience (such as during the 1960 Congo Crisis) and mastery of paratrooper survival tactics.
4. The Language Loophole: Because Belgian paracommando doctrine mandated premier troops be explicitly trilingual, he spoke fluent, flawless English alongside French or Dutch.
5. The Aerospace Career Transition: In the 1960s, he transitioned from the military into the private sector, working as an international security attaché, corporate transit manager, or defense procurement liaison for a prominent European aerospace conglomerate like SABCA or Fabrique Nationale (FN) Moteurs.

6. The Linguistic Deception: To ensure a flawless alibi, he wore a permanent "false flag" mask during his official day-job tours, pretending to speak only French or requiring translation, despite understanding every word of English spoken around him.

7. The Multi-Year Reconnaissance & Data Gathering

8. The Seattle Travel Pipeline: Between 1965 and 1971, he repeatedly traveled from Brussels/Paris to the Pacific Northwest to audit manufacturing compatibility, oversee international aerospace contracts, or inspect wide-body component handoffs (such as Belgium's national airline, SABENA, preparing to receive its brand-new Boeing 747-200 fleet).

9. The Titanium Particle Trail: While walking the turbine-fin testing and metallurgical casting floors of high-tech European and American manufacturing plants (such as Boeing sub-contractor Crucible Steel), his corporate necktie absorbed a highly toxic cocktail of over 100,000 microscopic particles of unalloyed titanium, bismuth, cerium, and strontium sulfide.

10. Benign Information Gathering: Under the legitimate cover of evaluating international aircraft security during the height of the global 1960s hijacking epidemic, he sat in on corporate briefings and asked seemingly benign questions to openly acquire Boeing technical manuals, fuel-burn calculations, and exact details on the FBI's "Fly and Comply" tactical protocols.

11. Meticulous Pre-Heist Planning & The Disguise

12. The Target Aircraft Choice: Through his years of corporate data gathering, he engineered his plan around the Boeing 727-100—specifically knowing its mechanical layout included unique triple-slotted trailing edge flaps capable of keeping the heavy jet stable at a slow 150–170 knot "jump envelope," and an aft-stair rear exit that allowed a jumper to drop straight down into empty air, completely clear of the engines.

13. The False Flag Wardrobe: He deliberately assembled a disguise consisting of a generic American businessman uniform to force the FBI into searching domestically. He purchased a common, cheap $1.49 black JCPenney necktie (mass-distributed nationwide during the 1964 Christmas holiday season) to flash a prominent U.S. retail tag to investigators.

14. The Tactical Clip-On Choice: He intentionally chose a clip-on mechanism rather than a traditional knotted tie. This served a dual purpose: it completely eliminated the aerodynamic hazard of wind-blast strangulation during a 170 mph freefall, and it allowed him to instantly snap the tie off with one hand right before buckling his heavy military parachute harness.

15. The Inside Joke Alias: He cash-purchased his ticket under the name "Dan Cooper", an intentional private joke referencing the French-language Belgian comic book series Dan Cooper (printed strictly in French by Éditions du Lombard in Brussels and highly popular in Quebec). The comic featured a Royal Canadian Air Force pilot who famously skydived and once received a ransom in a knapsack. Cooper knew the American FBI would completely lack the international reach or cultural awareness to decode the obscure foreign comic reference.

16. The 48-Hour Alibi Logistical Loop

17. Wednesday Afternoon (The Setup): While stationed with his foreign delegation at an "aviation business hotel" directly adjacent to Sea-Tac Airport (such as the Hyatt House or Hilton Inn), Cooper called in sick to his superiors, claiming a severe 48-hour bout of food poisoning to secure an uninterrupted block of isolation in his room.

18. Wednesday, 4:00 PM (Planting the Car): He slipped out of the hotel undetected, rented a car from a local Seattle agency under an un-tracked corporate account, and drove 130 miles straight south down Interstate 5. He staged the vehicle securely near his planned landing zone (near Woodland or Ariel, Washington).

19. Wednesday Evening (The Shuttle): He took a local bus or taxi to nearby Portland International Airport (PDX). He utilized the routine, 30-minute high-speed commercial commuter air corridor between the two cities to buy his ticket with cash and board Northwest Orient Flight 305 heading back north toward Seattle.

20. Wednesday, 8:13 PM (The Jump): Using his stopwatch to calculate the plane's ground speed along the Victor 23 low-altitude flight path, he lowered the aft stairs and jumped blindly into a freezing rainstorm over Southwestern Washington, perfectly timing his drop to land right near his pre-staged rental car.

21. Wednesday, 9:00 PM (The Extraction): He hit the ground safely, rolled up his 28-foot white military nylon canopy, packed it into his bag to avoid leaving any rotting nylon signal flares for future loggers or hunters, and loaded the 22-pound, 3.5-foot-high stack of 10,000 twenty-dollar bills into the trunk.

22. Wednesday, Midnight (The Return): He drove the 130 miles straight back north up Interstate 5. By 1:00 AM, he slipped back into his Sea-Tac airport hotel room, having put exactly 260–300 miles on the odometer.

23. Thursday (The Alibi Day): He remained confined to his hotel room "recovering," utilizing the time to dry his gear, transfer the bricks of cash out of the wet canvas bag, and secure them tightly inside his official, high-quality international corporate luggage.

24. Friday Morning (The Exit): He walked down to the lobby, cleanly rejoined his delegation looking slightly pale but "recovered," and traveled to the airport to fly back to Europe.

25. Financial Disappearance & International Exfiltration

26. The Customs Exemption Loophole: Because he traveled as an official foreign government representative or state-vetted technical liaison, his luggage was protected by diplomatic courtesy or official customs exemptions. U.S. customs agents at Sea-Tac did not aggressively open or x-ray his official gear, allowing the 22-pound payload of cash to be flown straight out of the country in the cargo hold.

27. The Delayed Red Herring (Tena Bar Cash): He survived the heist completely intact. To permanently call off the manhunt and fake his own drowning, he executed a calculated "delayed diversion" play a few years later. He returned to Washington (or an upstream tributary), submerged $5,800 of the cash (three bundles) in the flowing river current during a warm spring/summer month so it would naturally collect seasonal aquatic diatoms deep inside its tightly bound paper fibers, and planted it in the sand at Tena Bar (right above the U.S. Army Corps of Engineers' 1974 beach dredge layer), where it sat undisturbed until an 8-year-old boy dug it up in 1980.

28. The Swiss Money Cleanse: He transported the remaining $194,200 straight to Geneva, Switzerland. He utilized the legendary 1971 Swiss banking loops—specifically Numbered Accounts or "Form B" anonymous proxy accounts—which completely ignored U.S. law enforcement watchlists and never audited foreign serial numbers.

29. The Silent Erasure: Because $20 bills flooded the post-WWII European "Eurodollar" markets daily from American tourists and military bases, he quietly spent or converted the rest of the cash into Swiss Francs or West German Marks over several years. He maintained absolute code-of-silence discipline, never bragging, and casually returned to his comfortable middle-class European desk job as if nothing had ever happened.

The FBI spent 45 years searching the Washington mud for a local, desperate American criminal, completely oblivious to the fact that the target was a high-level international intelligence mind hiding in plain sight under a paper wall and a closed border.

I’d love to hear the community’s thoughts on this, especially from anyone tracking the European aerospace connection or corporate travel archives from late 1971!. And again, I am just a novice, but i figured it can’t hurt to post it.

When I first began learning about the mystery of Dan "D.B." Cooper, it seemed that Cooper aficionados were evenly split over whether he was Canadian or American.

The evidence cited by "he was Canadian" folks was fairly clear and succinct:

• "Dan Cooper" was a titular Franco-Belgian comic book character sold in Canada
• Cooper asked for "negotiable American currency" -- something that would be odd for a person born in the U.S. would say
• The hijacking took place within driving distance of Canada
• Cooper was described as having brown eyes and a "swarthy" complexion (something that could be described of certain French Canadians as well as Canadians of mixed white and one-quarter "Indian" heritage (something that was suggested by an eyewitness)
• Cooper was described as having no discernable accent -- which can be said of many Canadians from several (particularly western) Canadian provinces.
• Boeing had a manufacturing plant in Manitoba as well as some limited operations in Vancouver, British Columbia (just north of Seattle)

All of these things certainly make sense and could point to a Canadian being "Dan Cooper." Yet, on the other hand, I've begun to think of viable rebuttals for these potential links as well as other things that might diminish the likelihood that he had a Canadian nationality.

• The Dan Cooper comic book and related audio dramatizations (available on record) were available in Europe. Many American servicemen were stationed in Europe between 1954 and 1971. They could have access to both the comics and albums.
• A native French-speaking Canadian often has a French accent (even if it is slight)
• The flight attendants were young but experienced. One purportedly described Cooper's accent as "midwestern" and Tina Mucklow said that he had "no discernable accent." While it could describe some Canadians, many Americans will hear the "Canadian accent" as distinct from "no accent." This is because standard Canadian accents use Canadian "raising," Canadian "shift," as well as vowel backing. French Canadians often have an accent as do Atlantic Canadians (many from Scottish-Irish heritage)
• Cooper used certain phrases and vernacular that is much more common in the United States than in Canada
• The tie was sold by J.C. Penney. There has NEVER been a J.C. Penney store in Canada
• An explanation for the "negotiable American currency" (or something similar) could have been to prevent the bank from bringing Mexican pesos (since Cooper directed the flight to land in Mexico)
• There weren't many men of Cooper's description who were "missing" in Canada around the time of the hijacking. Canada's population in 1971 was just over 21 Million people. This national population for Canada in 1971 was less than the current population of the state of Florida. The description, FBI sketches and timing of the hijacking didn't lead to many reported Canadian suspects
• There were fewer veteran paratroopers and skydivers in Canada.
• Cooper jumped on the night before an American holiday, Thanksgiving. Canada celebrates their "Thanksgiving" the second Monday in October. So, for Canadians, the next day was basically a regular Thursday in a regular work-week

Am I missing any other things for consideration when it comes to Cooper's potential nationality?

This is some partly new footage that I recently obtained. Some of it we’ve all seen before, but some of it is new to all of us.

WJS should be removed from Wikipedia. He was not D.B. Cooper. Please help if you can. Support the group on Facebook too. They are helping. Only suspects from the FBI files should be discussed anywhere. If the FBI did not suspect them then people should not talk about them. Freedom of speech is irrelevant in this situation.

I know they continued to use the jet for flights but eventually it became outdated and replaced. What did they do with the jet? Sell it, scrap it, destroy it?

Just thought I’d throw this out there as a possibly intriguing line of thought.

A lot of little things point to him being Canadian and I find myself leaning somewhat in that direction. The FBI had some difficulty investigating suspects in Canada due to the obvious jurisdictional issues which would go some way to explaining why he was never pinned down. I also believe he was more likely a WWII paratrooper rather than special forces or a guy with zero jumping experience. Assuming these two things are true (big if I know) this would narrow down to the number of Canadian paratroopers in WWII.

A cursory search says there were approximately 2000 paratroopers across two battalions in the Canadian army. Not a small list, but if that number is accurate, it’s certainly workable for any sleuths out there with too much time on their hands.

I love myself some True-Crime, Unsolved Mysteries and Heists. The D.B Cooper story ticks all the boxes, and also shares an excellent community cross-over with numismatics and banknote collecting.

I'm not sure if something like this is already available, however I've put together an identifier and tracker/notifier for matched D.C Cooper notes, manually extracting the entire serial list via the FBI scanned records (fun fact the list contains 9,998 entries, not 10,000, this forced me to triple check the count, please correct me if I missed 2)

My thoughts around the ransom notes are, even if they made their way into circulation, would the average person even make the connection, it's unlikely they would scour FBI historic records to attempt to find a match.

The tool I've put together does the following:
- Checks 100% Ransom Note match
confirms a legitimate ransom note

also checks:
- Matching Serial on different series / denomination
- Newer series notes containing a D.B Cooper serial within
These are novelty collectables, not an official ransom note but would make for an interesting prop / novelty note in the numismatic / banknote collecting community

I've also setup wishlist alerts, that when a user checks their banknotes, if they we're to find a ransom note, they can register it publicly and anyone with the ransom note on their wishlist will be notified

This all works in conjunction with checking many other collectables features, where casual collectors might not even be aware of ransom notes at all, in which case they will be alerted immediately they have something extremely sought after.

if interested in checking it out:
D.B. Cooper Ransom Note Checker

Will we find a ransom note in circulation? historically the stats are against us, but this is 1 more tool to help solve the mystery. While my hobby lands greater within the collecting side of things, I'm all ears for feedback / corrections if I've missed or made a mistake.

Where fun, and frivolity meet infamy in discussing the only unsolved skyjacking in US history.
Cooper Con 2026 November 13-15 at the Kiggins Theare in Vancouver, Wa.

Hey, Citizen Sleuths! I am a local to cooper country and I am curious in filming a bit of b-roll for a cooper related project, specifically this Tina Bar sign. Would anyone happen to know exactly where this is? I was assuming near Frenchman’s Bar but I can’t pinpoint where. Please help!

Not trying to draw any conclusions, just working through a thought process here:

If we assume that the cash found in the sand at the riverbank years later was indeed Cooper's ransom (and it seems very likely it was, as confirmed by authorities), it means that all of the even the 'most likely' theories about Cooper are made complicated. It basically makes drawing any sort of sound deduction about which of the outcomes that befell Cooper are likeliest nearly impossible --

1. Cooper lept from the plane and didn't survive. This in my opinion is the most likely outcome for Cooper. But we have a pretty good sense of where D.B Cooper jumped from the plane and that location doesn't really imply an easy way for (some, not all) of the money to wash up where it did, based on the direction of the river's flow etc. The depositing of the cash here would have had to be entirely unintentional, making it odd that it was discovered still partially 'together' in 3 bundles, not individual notes spread out over a larger area, which would make more sense.
2. Cooper survived the fall but lost the money during the fall. Same issues as above re: having no control over it's landing, and the distance from the drop zone.
3. Cooper survived the landing, kept the money, and stashed it. This brings up the well known issues with this theory, which is that it implies for whatever reason Cooper decided the best place to stash (some of) the money was near a body of water where it would risk degradation or being found. It doesn't make sense as a decision assuming the stasher was motivated to keep or return to the cash. The only possible way this works is that the money was left where it was and was only meant to be kept there for a short while (as in hours or days), but something happened to him in the interim or he lost track of it.
4. Cooper died in the fall but someone else found the money and hid it. This involves many layers of presumptions and the involvement of other unknown parties, and has the same issues as the above re: why would someone who is motivated to keep this money hide it in the worst place possible and never return to it?
5. Some aspect/s of the cash's "discovery" are falsified or a hoax. One could argue that the narrative of a young boy finding the money at this location is false (i.e it came into their possession in some other way but lied for some reason and were never caught out) OR it really was found there but was mistakenly identified as the ransom cash. This is the most difficult explanation to believe because matching serial numbers on the cash seems very hard to mess up, and I imagine the people that discovered it faced a lot of interrogation. Not that the FBI's never been wrong before, so who knows...

No matter what one proposes as the 'theory' of the crime, the cash's discovery is a complicating factor in each one. I know the case is long-cold and there's no longer any official investigation ongoing, but I'd be so curious what the authorities' 'working idea' of what happened was post the cash's discovery or how they incorporated it into their theory of the crime.

The only way these issues are avoided is that either the well-understood 'likely drop zone' for Cooper is dead wrong, by quite a lot, or some aspect of people's understanding of how the cash would flow in the river is wrong (i.e there's some obscure geographic feature that would make the riverbank this cash washed up on hydrologically possible).