★Historically significant

This 1955 SECRET CIA intelligence report is an early Cold War-era collection of a potential Soviet experimental triangular aircraft test near a known military airfield in Azerbaijan, with active Soviet MVD suppression of observation, representing rare direct human intelligence on possible Soviet unconventional aerospace programs.

CIA-UAP-006, Sighting Of Unconventional Aircraft

CIAPDFIncident ReportSECRETNo redactionsPURSUE Release 3

5/10

solid newsworthy item

UAP Insight significance score

Location: Baku, Azerbaijan
Incident date: November, 1955
Duration: Several minutes (observed spirals, climb to high altitude, searchlight followed it 'all the way')
Witnesses: Multiple witnesses
Released: June 12, 2026

UAP Characteristics

▲ TriangleErratic movementHypersonic speed

Evidence Types

Testimony

Official Conclusion

Unevaluated information; no official conclusion stated

Official Description

This CIA information report from November 1955 describes a US national's eyewitness account of triangular aircraft with wing lights launch at a steep angle from an airfield near Baku, Azerbaijan on October 4, 1955. A redacted version of this report has been available on CIA's public website.

Key Findings

→A triangular, equilateral-shaped object comparable in size to a US jet fighter was observed on the ground at a Soviet airfield near the Caspian Sea coast, approximately 50-65 miles south of Baku.
→The object was launched — not conventionally taking off — making 3-7 fast spirals in the air before climbing at approximately 45 degrees at extreme speed, tracked by a large searchlight.
→A companion of the source reported this was the second such launch in rapid succession, suggesting a test or operational sequence.
→Soviet MVD personnel on the train ordered the blinds drawn as soon as the observers began watching, indicating deliberate concealment of the activity.
→The CIA collector noted the source revised his distance estimate from five miles to two miles, and explicitly flagged the source's lack of aviation technical training.

UAP Insight Analysis— AI generated, not official

A CIA SECRET information report dated November 15, 1955, documenting an eyewitness account by a 41-year-old US national (publicity/advertising executive) who observed a triangular aircraft being launched from an airfield near Baku, Azerbaijan on October 4, 1955. The report describes the object as equilateral-triangle-shaped, jet-fighter-sized, with three lights, ejected from a launch site with spiral maneuvers before climbing steeply. The CIA explicitly labels this 'unevaluated information' and notes the source had no aviation technical training.

Analyst Notes

Single civilian witness with no aviation technical training; source initially misjudged distance (revised from 5 miles to 2 miles), reducing precision. Observation was made from a moving train at dusk ('dark but clear'), limiting accuracy. No corroborating sensor data. The object's behavior (spiral launch, steep climb) is consistent with experimental Soviet rocket or missile test rather than anomalous UAP. CIA explicitly labels this 'unevaluated information.' The deliberate closing of blinds by Soviet MVD suggests a classified Soviet military test, which is a plausible mundane explanation.

Extracted Entities

Agencies & Organizations

Central Intelligence Agency (CIA)MVD (Soviet Ministry of Internal Affairs)INTOURIST

Locations

Baku, Azerbaijan SSRCaspian Sea coastTiflis (Tbilisi), Georgian SSRAzerbaijan SSR

Aircraft & Objects

Triangular equilateral-shaped object, size comparable to US jet fighter, squat shape, three lights (one on each point of the triangle), launched from airfield with spiral maneuvers

Dates

4 Oct 55 (date of sighting)15 Nov 55 (date distributed)

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AI analysis by claude-sonnet-4-6 · July 20, 2026