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Was Mogul Flight 4 the Missing Link?

The Flight 4 case matters because it offers a specific launch, route problem and recovery gap for the official Roswell explanation.

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On this page

  • The June 4 launch from Alamogordo
  • Why the unrecovered flight matters
  • The cancellation and documentation dispute
Preview for Was Mogul Flight 4 the Missing Link?

Introduction

The strongest single link between Project Mogul and the Roswell debris is not the programme as a whole but one specific launch: New York University (NYU) Flight 4, launched from Alamogordo Army Air Field on 4 June 1947. The importance of Flight 4 is straightforward. If a Mogul balloon train disappeared in the right area and was never recovered, it could provide a concrete source for the debris found weeks later on ranch land near Corona, north-west of Roswell. If Flight 4 did not fly, or if its path could not plausibly have reached the debris field, then a major pillar of the official explanation becomes weaker. As a result, the debate over Roswell often narrows to a surprisingly specific question: what really happened to Mogul Flight 4?[DAF History]dafhistory.af.milDAF HistoryThe Roswell Report… Project MOGUL, the top-priority classified project of balloon-borne experiments, which provides the expl…

Flight 4 illustration 1

The June 4 Launch from Alamogordo

According to the Air Force’s Roswell investigations and later accounts from Project Mogul personnel, Flight 4 was launched from Alamogordo on 4 June 1947 as part of the programme’s early field tests. The balloon train was far larger and more complex than an ordinary weather balloon, consisting of multiple balloons, radar-reflector components and experimental equipment designed to study long-range acoustic detection. DAF History+2U.S. Department of War[dafhistory.af.mil]dafhistory.af.milDAF HistoryThe Roswell Report… Project MOGUL, the top-priority classified project of balloon-borne experiments, which provides the expl…

The key claim is that the flight travelled generally north-eastward across central New Mexico. Later reconstructions by Project Mogul engineer Charles Moore suggested that the balloon train likely moved towards the Corona region before disappearing from tracking. That route matters because Corona lies close to the ranch where W.W. “Mac” Brazel later found the scattered debris that triggered the Roswell incident.[Center for Inquiry]cdn.centerforinquiry.orgFlight 4 lifted off from Alamogordo, it probably ascended while traveling northeast (toward Arabela), then turned…Read more…

Sceptical researchers who accept the Mogul explanation often point to this geographical overlap. The argument is not that investigators can trace every mile of the flight with certainty, but that Flight 4 is the only known Mogul launch that fits the timing, location and recovery gap well enough to serve as a plausible source of the debris.[skepticalinquirer.org]skepticalinquirer.orgSkeptical Inquirer The Roswell Incident at 70: Facts, Not Myths4The research team launched NYU Flight #4 on June 4, 1947, from Alamogordo Army Air Field and tracked it flying east-northeast toward Coro…Published: June 4, 1947

Why the Unrecovered Flight Matters

The Roswell mystery depends heavily on a missing object. If the military had launched a balloon train, tracked it to landing and recovered it, there would be little reason to connect it with Brazel’s discovery. Flight 4 became important precisely because it appears to have vanished from the project’s normal recovery process.[Muller Lab]muller.lbl.govMuller LabROSWELL INCIDENT REPORT… Flight 4 was launched on June 4, 1947, but was not recovered by the NYU group. It is very probable t…Published: June 4, 1947

The Air Force’s 1994 and 1995 studies concluded that material found near Roswell was most likely associated with an unrecovered Mogul flight, specifically the June 4 launch. Researchers examining project records argued that the disappearance of Flight 4 created a realistic opportunity for debris to remain on the ground long enough to be discovered later by a rancher unfamiliar with classified balloon equipment. U.S. Department of War+2DAF History[media. defense.gov]media.defense.govAFD 101027 030Department of WarU.S. Air Force: "The Roswell Report: Case Closed"The 1994 Air Force report determined that project MOGUL was responsible…

Several features of the timeline make the scenario attractive to supporters of the Mogul explanation:

  • The launch occurred about a month before the public Roswell controversy erupted.
  • The projected flight path passed through the broader Corona region.
  • The balloon train was not formally recovered.[muller.lbl.gov]muller.lbl.govMuller LabROSWELL INCIDENT REPORT… Flight 4 was launched on June 4, 1947, but was not recovered by the NYU group. It is very probable t…Published: June 4, 1947
  • The debris descriptions included foil, sticks, rubber and lightweight structural materials consistent with equipment used in Mogul assemblies.[wikipedia.org]WikipediaRoswell incidentRoswell incident

The timeline therefore offers a practical mechanism rather than a purely theoretical one. Instead of claiming that any Mogul balloon could have produced the debris, it identifies a specific launch that apparently disappeared and could have left wreckage behind.[Smithsonian Magazine]smithsonianmag.comroswell the genesis story of us ufos 140945396Smithsonian MagazineRoswell, "The Genesis Story of U.S. UFOs"Jul 7, 2010 — Mogul Flight 4 was launched from Alamogordo on June 4, 1947, a…Published: June 4, 1947

Flight 4 illustration 2

Why the Documentation Became Controversial

Flight 4 would not be controversial if the paperwork were clear. The problem is that surviving records from the programme are incomplete, and different researchers have interpreted them in different ways.[DAF History]dafhistory.af.milDAF HistoryThe Roswell Report… Project MOGUL, the top-priority classified project of balloon-borne experiments, which provides the expl…

One side of the debate relies heavily on project notes, launch records and recollections from Mogul participants. These sources support the view that Flight 4 was launched on 4 June and later lost. The Air Force’s Roswell reports treated that conclusion as the most likely reconstruction of events.[af.mil]dafhistory.af.milDAF HistoryThe Roswell Report… Project MOGUL, the top-priority classified project of balloon-borne experiments, which provides the expl…

Critics focus on apparent gaps and inconsistencies. Some researchers have argued that records indicate the planned Flight 4 launch was cancelled because of weather conditions and therefore could not have produced debris. In this interpretation, the Air Force retrospectively attached Roswell to a flight that never actually occurred.[Kevin Randle's Blog]kevinrandle.blogspot.com5 because, had it flown and done so, there would beKevin Randle's BlogA Different Perspective: A Few Facts about Project Mogul12 Aug 2013 — Contrary to what Charles Moore claimed, it did n…

The disagreement is complicated by the experimental nature of the programme. Early Mogul operations involved test launches, modified configurations and incomplete documentation. Historians have therefore had to reconstruct events from field notes, diaries, technical reports and participant recollections rather than from a single definitive launch record.[DAF History]dafhistory.af.milDAF HistoryThe Roswell Report… Project MOGUL, the top-priority classified project of balloon-borne experiments, which provides the expl…

The Cancellation and Documentation Dispute

At the centre of the argument is a distinction between a scheduled launch and the hardware that actually left the ground.

Some Roswell critics point to records suggesting that a fully instrumented constant-level balloon flight planned for 4 June was cancelled. If that interpretation is correct, the official explanation appears to rest on a launch that never happened. This objection became one of the most frequently cited challenges to the Air Force account.[Kevin Randle's Blog]kevinrandle.blogspot.com5 because, had it flown and done so, there would beKevin Randle's BlogA Different Perspective: A Few Facts about Project Mogul12 Aug 2013 — Contrary to what Charles Moore claimed, it did n…

Supporters of the Mogul explanation respond that even if a planned configuration was altered or partially cancelled, balloon equipment was still launched that day. They argue that surviving records, diary entries and later technical reviews indicate that material did leave Alamogordo on 4 June and that the distinction between a cancelled mission profile and an actual balloon launch has often been blurred in later debates.[lbl.gov]muller.lbl.govMuller LabROSWELL INCIDENT REPORT… Flight 4 was launched on June 4, 1947, but was not recovered by the NYU group. It is very probable t…Published: June 4, 1947

Because the surviving documentation is incomplete, the dispute has never been resolved to everyone’s satisfaction. What can be said with confidence is that the official Roswell explanation depends heavily on reconstructing a June 4 launch whose recovery was never documented and whose exact configuration remains debated.[DAF History]dafhistory.af.milDAF HistoryThe Roswell Report… Project MOGUL, the top-priority classified project of balloon-borne experiments, which provides the expl…

Flight 4 illustration 3

How Much Does Flight 4 Explain?

Flight 4 remains the most specific and evidence-based candidate offered for the Roswell debris. It provides a named launch, an approximate route, a plausible recovery gap and materials broadly consistent with witness descriptions. That is why it occupies such a central place in the mainstream explanation.[smithsonianmag.com]smithsonianmag.comroswell the genesis story of us ufos 140945396Smithsonian MagazineRoswell, "The Genesis Story of U.S. UFOs"Jul 7, 2010 — Mogul Flight 4 was launched from Alamogordo on June 4, 1947, a…Published: June 4, 1947

At the same time, the case is not built on perfect documentation. The continuing arguments over whether Flight 4 was launched exactly as planned, whether portions were cancelled and how confidently its route can be reconstructed ensure that the lost-balloon timeline remains one of the most scrutinised elements of the Project Mogul explanation. The Roswell debate therefore turns not only on what was found near Roswell, but also on what happened to a balloon train that appears to have disappeared from the historical record in early June 1947.[blogspot.com]kevinrandle.blogspot.com5 because, had it flown and done so, there would beKevin Randle's BlogA Different Perspective: A Few Facts about Project Mogul12 Aug 2013 — Contrary to what Charles Moore claimed, it did n…

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Further Reading

Books and field guides related to Was Mogul Flight 4 the Missing Link?. Use these as the next step if you want deeper reading beyond the article.

BookCover for Witness to Roswell

Witness to Roswell

By Thomas J. Carey, Donald R. Schmitt

Provides the leading counterargument to Mogul-based explanations and helps readers evaluate competing interpretations.

BookCover for UFO Crash at Roswell

UFO Crash at Roswell

By Benson Saler, Charles A. Ziegler et al.

Charles Moore was a Project Mogul participant, making this one of the strongest books for readers investigating Flight 4 and the Mogul ex...

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Endnotes

1. Source: [media]({{ ‘media/’ | relative_url }}). defense.gov
Title: AFD 101027 030
Link:https://media.defense.gov/2010/Oct/27/2001330219/-1/-1/0/AFD-101027-030.pdf

Source snippet

Department of WarU.S. Air Force: "The Roswell Report: Case Closed"The 1994 Air Force report determined that project MOGUL was responsible...

2. Source: Wikipedia
Title: Project Mogul
Link:https://en.wikipedia.org/wiki/Project_Mogul

Source snippet

Project Mogul... Air Force attributed the 1947 Roswell debris to a Project Mogul balloon. In 1947, a Project Mogul balloon NYU Flight...

3. Source: Wikipedia
Title: Roswell incident
Link:https://en.wikipedia.org/wiki/Roswell_incident

4. Source: Wikipedia
Link:https://en.wikipedia.org/wiki/Project

Source snippet

ProjectA project is a type of assignment, typically involving research or design, that is carefully planned to achieve a specific obje...

5. Source: Wikipedia
Title: Roswell (TV series)
Link:https://en.wikipedia.org/wiki/Roswell_%28TV_series%29

Source snippet

Roswell (TV series)Roswell is an American science fiction television series that presents a timeline where the Roswell UFO exists, and...

6. Source: Wikipedia
Link:https://en.wikipedia.org/wiki/Official

Source snippet

OfficialAn official is someone who holds an office (function or mandate, regardless of whether it carries an actual working space with...

7. Source: dafhistory.af.mil
Link:https://www.dafhistory.af.mil/Portals/16/documents/AFD-101201-038.pdf

Source snippet

DAF HistoryThe Roswell Report... Project MOGUL, the top-priority classified project of balloon-borne experiments, which provides the expl...

8. Source: cdn.centerforinquiry.org
Link:https://cdn.centerforinquiry.org/wp-content/uploads/sites/29/1995/07/22165104/p17.pdf?_ga=2.167806568.87202448.1674674099-1555719303.1674674099

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Flight 4 lifted off from Alamogordo, it probably ascended while traveling northeast (toward Arabela), then turned...Read more...

9. Source: centerforinquiry.s3.amazonaws.com
Link:https://centerforinquiry.s3.amazonaws.com/wp-content/uploads/sites/29/1995/07/22165104/p17.pdf

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The Roswell Incident and Project MogulMoore makes a strong case for the hypothesis that NYU Flight #4, which he helped launch on June 4...

10. Source: skepticalinquirer.org
Title: Skeptical Inquirer The Roswell Incident at 70: Facts, Not Myths4
Link:https://skepticalinquirer.org/2017/12/the-roswell-incident-at-70-facts-not-myths/

Source snippet

The research team launched NYU Flight #4 on June 4, 1947, from Alamogordo Army Air Field and tracked it flying east-northeast toward Coro...

Published: June 4, 1947

11. Source: smithsonianmag.com
Title: roswell the genesis story of us ufos 140945396
Link:https://www.smithsonianmag.com/air-space-magazine/roswell-the-genesis-story-of-us-ufos-140945396/

Source snippet

Smithsonian MagazineRoswell, "The Genesis Story of U.S. UFOs"Jul 7, 2010 — Mogul Flight 4 was launched from Alamogordo on June 4, 1947, a...

Published: June 4, 1947

12. Source: muller.lbl.gov
Link:https://muller.lbl.gov/teaching/physics10/Roswell/RoswellIncident.html

Source snippet

Muller LabROSWELL INCIDENT REPORT... Flight 4 was launched on June 4, 1947, but was not recovered by the NYU group. It is very probable t...

Published: June 4, 1947

13. Source: kevinrandle.blogspot.com
Title: 5 because, had it flown and done so, there would be
Link:https://kevinrandle.blogspot.com/2013/08/a-few-facts-about-project-mogul.html

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Kevin Randle's BlogA Different Perspective: A Few Facts about Project Mogul12 Aug 2013 — Contrary to what Charles [Moore]({{ 'moore/' | relative_url }}) claimed, it did n...

14. Source: muller.lbl.gov
Link:https://muller.lbl.gov/teaching/physics10/Roswell/USMogulReport.html

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Muller LabProject MogulThe first NYU "field trip" departed Olmstead Field, Middletown, PA, by C47 for Alamogordo AAF on May 31, 1947, arr...

Published: May 31, 1947

15. Source: jhmovie.fandom.com
Link:https://jhmovie.fandom.com/wiki/Roswell_incident

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incident | JH Wiki Collection Wiki | FandomOn June 4, researchers at Alamogordo Army Air Field launched a long train of these balloons; t...

16. Source: dictionary.cambridge.org
Link:https://dictionary.cambridge.org/dictionary/english/official

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of official - Cambridge Dictionary...

17. Source: dictionary.cambridge.org
Link:https://dictionary.cambridge.org/us/dictionary/english/project

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definition in the Cambridge English Dictionarya piece of planned work or an activity that is finished over a period of time and intende...

18. Source: instagram.com
Link:https://www.instagram.com/official/

Source snippet

(@official) • Instagram photos and videos237K followers · 424 following · 7287 posts · @official: “Headwear, Bags, & Apparel since '07 |...

19. Source: af.mil
Link:https://www.af.mil/The-Roswell-Report/

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The Roswell ReportRecords located describing research carried out under the MOGUL project, most of which were never classified (and publi...

20. Source: britannica.com
Title: Roswell incident | Overview, Theories, Hoaxes, & Facts
Link:https://www.britannica.com/event/Roswell-incident

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military initially claimed that the recovered debris near Roswell, New Mexico in June 1947 was from a “[flying disc]({{ 'flying-disc/' | relative_url }}).” A rancher...Read more...

Published: June 1947

21. Source: vocabulary.com
Link:https://www.vocabulary.com/dictionary/official

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If Gatorade is the official drink of the Olympics, somebody with authority has signed some...Read more...

22. Source: sgp.fas.org
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Report on Roswell, NM UFO CrashGAO provided information on the 1947 weather balloon crash at Roswell Air Field, New Mexico, focusing on...

23. Source: cdn.centerforinquiry.org
Link:https://cdn.centerforinquiry.org/wp-content/uploads/sites/29/1998/05/22164918/p31.pdf

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30, 1946-Dec. 31. 1950. J \ Roswell Incident July 4 - 8, 1947. NYU Flight #4: June 4, 1947. Balloon. Project. Air...

Published: June 4, 1947

Additional References

24. Source: researchgate.net
Link:https://www.researchgate.net/publication/362854511_A_Grounded_Theory_Update_on_the_Roswell_UFO_Incident

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A Grounded Theory Update on the Roswell UFO IncidentA grounded theory (or deductive) examination of these two lines of empirical evidence...

25. Source: dictionary.com
Link:https://www.dictionary.com/browse/official

Source snippet

OFFICIAL Definition & MeaningOFFICIAL definition: a person appointed or elected to an office or charged with certain duties. See examples...

26. Source: collinsdictionary.com
Link:https://www.collinsdictionary.com/us/dictionary/english/official

Source snippet

OFFICIAL definition in American English1. of or holding an office, or position of authority 2. by, from, or with the proper authority; au...

27. Source: pmi.org
Link:https://www.pmi.org/about/what-is-a-project

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What is a Project, Examples and the Project LifecycleA project is a series of structured tasks, activities, and deliverables that are car...

28. Source: physics.smu.edu
Link:https://www.physics.smu.edu/pseudo/UFOs/pt01a.pdf

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importance of attachment 32, Lieutenant McAndrew's synopsis, derives from his description of Project MOGUL, the top-priority classified p...

29. Source: law.cornell.edu
Link:https://www.law.cornell.edu/wex/official

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Wex | US Law | LII / Legal Information InstituteA public official is an individual elected or appointed to carry out a subset of the po...

30. Source: people.com
Title: “[Unsolved Mysteries]({{ ‘tv-suspense/’ | relative_url }})”: The True Story of the Roswell UFO Incident
Link:https://people.com/roswell-incident-true-story-unsolved-mysteries-8722935

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"Mack" Brazel. Initially claimed by the U.S. Air Force to be a "flying saucer," this was quickly retracted, asserting it was a weather ba...

31. Source: ciphermysteries.com
Title: And I think I’ve now found an answer, but in a place I never expected…Read more
Link:https://ciphermysteries.com/2026/01/15/the-roswell-capsule-was-it-tex-settles-flying-coffin

Source snippet

The Roswell capsule: was it Tex Settle's Flying Coffin?15 Jan 2026 — It's a question I've been trying to resolve for a few years now...

32. Source: merriam-webster.com
Title: OFFICIA L Definition & Meaning7 days ago — 1
Link:https://www.merriam-webster.com/dictionary/official

Source snippet

One who holds or is invested (see invest entry 2 sense 1) with an office: officer government officials A company official responded to o...

33. Source: merriam-webster.com
Title: PROJEC T Definition & Meaning4 days ago — 1
Link:https://www.merriam-webster.com/dictionary/project

Source snippet

a: to devise in the mind: design b: to plan, figure, or estimate for the future 2. to throw or cast forward: thrust 3. to put or set...

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