Declassified UFO / UAP Document
PROJECT 10073 RECORD CARD — Brooklyn, New York, 29 August 1958
AI-Generated Summary
A civilian in Brooklyn reported a triangular, wingless object in August 1958. The Air Force concluded the sighting was an aircraft in a climb, creating an optical illusion.
This document consists of a Project 10073 record card and associated correspondence regarding a civilian sighting in Brooklyn, New York. The witness reported observing an object approximately ten days prior to their report, which was filed on September 8, 1958. The witness described the object as a delta-shaped or triangular craft, illuminated like an ordinary electric light, moving slowly toward the South by West. The witness explicitly noted the absence of wings and stated that the object moved slower than a jet. The witness observed the object for five to six minutes from a rooftop. The Air Force investigation concluded that the sighting was likely an aircraft in a climb, which created an optical illusion that led the witness to believe the object lacked wings and was moving at an unusual speed. A memo routing slip dated September 24, 1958, from Ted Hieatt of AFCIN-4X3 to Major L. J. Tacker, confirms that the original letter from the witness was retained for the case file.
It was a triangle precisely like an Isosceles triangle; the base less than sides; it was up perhaps 3 or 4 miles and not going very fast.
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Official Assessment
Delta wing configuration a/c in climb gives the appearance as described. Witness indicated that the obj was a plane or something & the fact that it had no wings & appeared to fly slower than jets caused him to make a rpt ten days after the sighting.
The object was identified as an aircraft in a climb, which created an optical illusion of a delta-shaped, wingless object.
Witnesses
- [illegible]Civilian
Key Persons
- Major L. J. TackerRecipient of memo routing slip
- LarryRecipient of memo