Belgium's Air Component holds the 1989–1990 wave records, including the March 30–31, 1990 F-16 radar intercept data; the Lambrechts and De Brouwer technical assessments were released through SOBEPS and are catalogued in Belgian defence archives. Open the full archive at Belgian Air Force F-16 file ↗
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Auguste Meessen's technical study of the Belgian F-16 radar recordings from the night of March 30–31, 1990, reconstructing the Glons/Semmerzake ground-radar detections, the Beauvechain F-16 interception, and the analytical search for a conventional explanation.
Belgian Air Force radar trace charts from the March 30–31, 1990 Eupen/Wavre F-16 interception, presented publicly by Col. Wilfried De Brouwer at NATO headquarters in Evere on July 11, 1990.
Belgian Air Force radar trace charts from the March 30–31, 1990 F-16 interception over central Belgium, presented by Col. Wilfried De Brouwer at NATO headquarters on July 11, 1990.
Belgian Air Force radar trace charts from the March 30–31, 1990 F-16 interception over central Belgium, presented by Col. Wilfried De Brouwer at NATO headquarters in Evere on July 11, 1990.
Belgian Air Force engineering report directed by Lt. Col. Salmon analyzing the 13 radar contacts recorded by F-16 interceptors over Belgium on the night of 30-31 March 1990, concluding that Kalman filter artifacts inside the F-16 fire-control radar can generate the extreme target maneuvers without invoking an unconventional craft.
SOBEPS Volume 1 is the Belgian civilian study group's primary forensic dossier on the opening phase of the 1989-1990 Belgian UFO wave, documenting the November 29 1989 Eupen cluster and SOBEPS's formal cooperation with the Belgian Air Force and Gendarmerie.
SOBEPS Volume 2 is the Belgian civilian UFO study group's 1994 follow-up report on the 1991–1994 phase of the Belgian wave, including the formal write-up of the F-16 radar engagement of 30–31 March 1990 and the joint SOBEPS / Belgian Air Force radar-tape analysis.
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