DISCLOSURE / FILEProject Sign Final Report (Technical Intelligence Report No. F-TR-2274-IA), Project Sign Microfilm Reels (archive.org)
Final report of Project Sign, the U.S. Air Force's first formal UFO investigation, delivered to the Pentagon in February 1949 as Technical Intelligence Report No. F-TR-2274-IA.
Brief
Project Sign was the U.S. Army Air Forces / Air Force Air Materiel Command's first formal program to investigate unidentified flying objects, running from late 1947 through early 1949. Its final technical intelligence report, designated F-TR-2274-IA, was delivered to the Pentagon in February 1949. The report concluded that some reported objects may be of foreign origin but did not determine their nature. The document is preserved on the Project Sign microfilm reels held at archive.org.
Metadata
- Agency
- U.S. Army Air Forces / U.S. Air Force Air Materiel Command
- Release
- 1949-02-01
- Type
- PDF • .html
- Length
- 274.8 K
- Programs
- Project Sign
- Tags
- Project Sign, 1949, Air Materiel Command, UFO investigation, technical intelligence report, Pentagon
Key points
- Project Sign was the U.S. Air Force's first formal UFO investigation program.p.1
- The final report was issued as Technical Intelligence Report No. F-TR-2274-IA.p.1
- The report was produced by the Air Materiel Command and delivered to the Pentagon in early 1949.p.1
- The report concluded that some reported objects may be of foreign origin but could not determine their nature.p.1
- The document is preserved on the Project Sign microfilm reels archived at archive.org.p.1
Most interesting
- Project Sign predated and was the direct institutional ancestor of Project Grudge (1949) and Project Blue Book (1952-1969).
- The F-TR-2274-IA designation places this report in the Air Materiel Command's technical intelligence series at Wright-Patterson Field.
- The report's conclusion that objects may be of foreign origin reflects the late-1940s framing in which Soviet aircraft were the dominant alternative hypothesis to extraterrestrial origin.