65_HS1-834228961_62-HQ-83894_Serial_164, Air Intelligence Requirements Memorandum No. 4, Unconventional Aircraft, 1949
- Date
- February 15, 1949 (as stated)
- Location
- Washington, D.C. (letterhead)
- Agency
- FBI
- Release
- Release 01 (May 8, 2026)
- Type
- document
Summary
A copy in the FBI file of Air Intelligence Requirements Memorandum Number 4, "Unconventional Aircraft," issued by the Directorate of Intelligence, Headquarters U.S. Air Force. It sets out "continuing Air Force requirements for information pertaining to sightings of unconventional aircraft and unidentified flying objects, including the so-called 'Flying Discs,'" and establishes reporting procedures, with detailed observer and object checklists. It supersedes Department of the Army Collection Memorandum Number 7 of January 21, 1948.
Note
A reporting-procedure document, not a sighting.