ACUFO:

ACUFO is my comprehensive catalog of cases of encounters between aircraft and UFOs, whether they are "explained" or "unexplained".

The ACUFO catalog is made of case files with a case number, summary, quantitative information (date, location, number of witnesses...), classifications, all sources mentioning the case with their references, a discussion of the case in order to evaluate its causes, and a history of the changes made to the file.

Click on the links to access the corresponding folder.

Date	Country	Place	Evaluation
January 31, 1916	U-K.	Near Romford, Essex.	Possible star Capella, insufficient information.
January 31, 1916	U-K.	Near Rochford, Essex.	Uncertain, possible misinterpretation.
1917	Belgium	West of Belgium.	Taboid invention.
January 1926	USA	Between Wichita and Colorado Springs.	High strangeness, unknown credibility.
Late September 1926	USA	In Utah.	Probably invented in 1994.
1931	U-K.	In England.	Totally insufficient information.
June 6, 1931	Australia	Over the Tasman Sea.	Possible extraterrestrial craft, or mirage.
1932	Greenland (Denmark)	East coast of Greenland.	Possible extraterrestrial craft.
July 5, 1933	U-K.	In the Sussex.	Probably invented in 1994.
October 10, 1936	Italy	Over Formiche di Grosseto.	Probable meteor.
1 janvier 1937	USA	In Virginie.	Possible extraterrestrial craft, lack of information.
1937	USA	Near Buren, Missouri.	Totally insufficient information.
March 23, 1940	Germany	Cuxhaven.	Insufficient information, possible meteor.
March 24, 1940	Germany	Wesermünde.	Possible extraterrestrial craft.
1941	Germany	Over Germany.	Probable invention od sensation publication.
January 1941	China	In Manchuria.	Totally insufficient information and credibility.
After June 1941	Russia	On an airfield.	Extraterrestrial craft or invention.
1942	Greenland (Denmark)	Near Thule.	Totally insufficient information.
March 14, 1942	Norway	Near the Banak military airfield.	High strangeness, unknown credibility.
March 25, 1942	Holland	Over the Zuiderzee.	Possible extraterrestrial craft.
May 17, 1942	Germany	Onasbr ck, Germany.	Possible meteor.
August 1942	Australia	In the Bass Strait.	Possible extraterrestrial craft, unknown credibility.
August 11, 1942	Germany, Belgium	Near Aachen and Verviers.	Unidentified, possible mix of different events.
September 1942	Japan	In the Sea of Japan.	Probable photo fault, no credibility.
November 1942	France	Bay of Biscay.	Unknown credibility.
November 28, 1942	Italy	In the area of Turin.	Possible extraterrestrial craft.
December 9, 1942	France	The Somme estuary.	Possible extraterrestrial craft.
December 10, 1942	France	The Somme estuary.	Possible extraterrestrial craft.
1943	Burma	Burma.	Without credibility.
1943	USA	Arizona.	Without credibility.
1943		Atlantic Ocean between USA and U-K.	Possible extraterrestrial craft, uncertain reliability.
1943	Germany	Over Germany.	Sensation author invention.
January 5, 1943	Germany	Over Kiel.	Insufficient information.
January 15, 1943	France	Over Cherbourg.	Probable German flak.
March or April 1943	Tunisia	Near Monastir.	Possible extraterrestrial craft.
March 13, 1943	Italy	Near Naples.	Possible red Moon.
April 5, 1943	USA	Long Beach.	Possible extraterrestrial craft.
May 1943	France	Over the English Channel.	Unidentified.
May 12, 1943	Germany	Duisburg.	Probable meteor.
May 13, 1943	Germany	Dortmund.	Probable meteor.
May 13, 1943	Czech Republic	Pilsen.	Probable meteor.
May 27, 1943	Germany	Essen.	Possible engin extraterrestre.
September 1943	France	In France.	Insufficient information.
June 26, 1943	Germany	Elbe estuary.	Unidentified, totally insufficient information.
July 26, 1943	USA	The Aleutian islands.	Radar echoes of Flocks of birds.
Autumn 1943	Germany	Peenem nde.	Possible extraterrestrial craft.
September 1943	Russia	Pushkino.	Insufficient information.
September 6, 1943	Germany	Stuttgart area.	Possible fire bomb debris.
October 14, 1943	Germany	Above Schweinfurt.	Unidentified.
November 26, 1943	Germany	Over Bremen.	Unidentified, possible flares.
December 11, 1943	Germany	Emden.	Probable Messerschmitt Me-163 "Komet".
December 14, 1943	Italy	Naples area.	Possible extraterrestrial craft.
December 18, 1943	Germany	Hamburg and other cities.	Invention by author Henry Durrant.
End of 1943	Germany	Center of Germany.	Possible extraterrestrial craft, problem in the report.
End of 1943	Germany	Bremen.	Possible extraterrestrial craft.
1944	Ukraine	On the Southwest of Ukraine.	Possible extraterrestrial craft or invention.
1944	India	Over India.	Invention.
1944		South Atlantic ocean.	Possible extraterrestrial visitors, unknown credibility.
1944	Romania	Ploesti.	Insufficient information, unknown credibility.
January 3, 1944	Germany	Near Halberstadt.	Unidentified.
January 5, 1944	Germany	Over Kiel.	Possible Me-163's, insufficient information.
January 27, 1944	Germany	Near Berlin.	Possible extraterrestrial craft.
January 28, 1944	France	Probably over the South of France.	Insufficient information.
February 1944	Australia	Bass Strait.	Possible extraterrestrial craft, possible invention.
February 3, 1944	Germany	In Germany.	Unidentified.
February 4, 1944	Holland	Dutch coast.	Probable flak.
February 4, 1944	Germany	Over Francfort.	Probable weather balloon.
February 8, 1944	Germany	Over Francfort.	Probable weather balloon.
February 19, 1944	Germany	Over Aachen.	Possible extraterrestrial craft.
February 19, 1944	Germany	Koblenz.	Possible extraterrestrial craft.
February 19, 1944	Germany	Leipzig.	Totally insufficient information.
February 25, 1944	France	Saint-Quentin.	Possible German barrage balloons.
March 1944	USA	Near Yakima.	Probable invention by UFO magazine.
March 1, 1944	USA	Carlsbad.	Probable meteor.
April 11, 1944	Germany	Over Germany.	Possible plane on flames, insufficient information.
April 25, 1944	France	Over France.	Unidentified, insufficient information.
April 26, 1944	France	Above Essen.	Possible extraterrestrial craft.
April 30, 1944	France	Near Anzio.	Possible extraterrestrial craft.
May 1944	Austria	Over Austria.	Totally insufficient an doubtful information.
May 1944	France	The English Channel.	Totally insufficient information, unknown credibility.
June 1944	Italy	Near Bari.	Insufficient information, unknown credibility.
June 1944	Italy	Over Firenze.	Possible extraterrestrial craft, insufficient information.
June 1944	Micronesia	In the Marshall islands.	Possible cloud radar echo.
June 6, 1944	France	In Normandy.	Possible German fighter plane, unknown credibility.
July 15, 1944	USA	North of Tampa.	Possible invention.
July 25, 1944	Germany	Near Stuttgart.	Extraterrestrial craft or searchlights.
Summer 1944	Italy	In Italy.	Totally insufficient information.
August 1, 1944	Romania	Over Ploesti.	Totally insufficient information, possible meteor.
August 10, 1944	Indonesia	Palembang, Sumatra.	Possible extraterrestrial craft.
August 12, 1944	France	Back from La Pallice.	Possible extraterrestrial craft.
August 13, 1944	Indonesia	Kaoe Bay.	Negative case, probable flare.
August 18, 1944	Italy	Near Alfonsine.	Probable radar chaff.
September 1944	Burma	Over Burma.	Insufficient credibility.
September 1944	Germany	Over Germany.	Possible extraterrestrial craft.
September 1944	Germany	Over Germany.	Insufficient information.
September 20, 1944	Italy	In the Po valley.	No strangeness.
September 20, 1944	Italy	Near Florence.	No strangeness, possible flares.
September 29, 1944	Germany	Rechlin-Roggentin.	Invention by author.
Autumn 1944	Germany	Ovre Germany.	Possible extraterrestrial craft.
October 1944	Germany	In the Rhine valley.	Possible extraterrestrial craft.
October 12, 1944	France	Near Strasbourg.	Unexplained, not necessarily related to UFOs.
October 25, 1944	Japan	Near Omura.	Possible balloon.
October 25, 1944	Japan	Near Omura.	Possible balloon.
October 25, 1944	Japan	Near Omura.	Possible balloons.
October 30, 1944	Germany	Over Cologne.	Insufficient information.
October 30, 1944	Germany	Near Munich.	Possible meteor or ball lightning.
November 1944	Germany	Over Germany.	Unidentified, insufficient information.
November 11, 1944	Malaisia	Singapour.	Possible plane or meteor.
November 5, 1944	Germany	Near Aachen.	Unidentified.
November 10, 1944	Japan	Okayama.	Possible misinterpretation.
November 22, 1944	Germany	Coblence.	Probable German jet planes.
November 22, 1944	Norway	West-South-West of Trondheim.	Possible extraterrestrial craft.
November 24, 1944	Austria, Italy	Klagenfurt, Trieste.	Possible extraterrestrial craft.
November 26, 1944	Germany	Between Mannheim and Longvic.	Insufficient information.
November 28, 1944	Germany	Cologne.	Probable Me-262 jet planes.
December 1944	France or Germany	East of France or West of Germany.	Totally insufficient information.
December 1944	Germany	In Germany.	Totally insufficient information.
December 1944	Germany	Near Frankfurt.	Possible extraterrestrial craft.
December 2, 1944	Italy	Near Ghedi and Villafranca di Verona.	Low strangeness or no strangeness.
December 5, 1944	Germany	Rhine valley.	Possible German plane.
December 17, 1944	Germany	Near Lichtenau.	Insufficient information, possible ground targets.
December 17, 1944	Germany	Near Neufreistett.	Insufficient information, probable ground targets.
December 17, 1944	Germany	Near Karlsruhe.	Low strangeness.
December 22, 1944		France or Germany.	Low strangeness, probable enemy plane.
December 23, 1944	USA	Between Blackstone and Richmond.	Possible meteor, possible extraterrestrial craft.
December 23, 1944	France	Near Sarrebourg.	Possible plane.
December 24, 1944	Germany	Near Karlsruhe.	Possible extraterrestrial craft.
December 27, 1944	France	8 miles Northeast of Lun ville.	Possible extraterrestrial craft.
December 28, 1944	Belgium	Over the Ardennes.	Probable V-2 rocket launch.
December 28, 1944	Germany	Over Trier.	Unidentified, insufficient information.
December 28, 1944	Germany	On the Rhine valley.	Possible extraterrestrial craft.
Winter 1944-1945	Germany	West of Neustadt.	Possible weather balloon.
Winter 1944-1945	France or Germany	Rhine valley.	Insufficient information.
1944-1945	Japan or China	Japan or China od the Pacific Ocean.	Probable reflection on cockpit.
1944-1945	Germany	Over Germany.	Possible extraterrestrial craft, sparse information.
May 3, 1945	Micronesia	Frpm Truk Atoll to Guam.	Possible extraterrestrial craft.

This page was last updated on November 29, 2023.