Documents / Official release
This FBI file serial from case 62-HQ-83894 holds several copies of Air Intelligence Requirements Memorandum Number 4, "Unconventional Aircraft." Major General C. P. Cabell, Director of Intelligence at Headquarters United States Air Force, issued the memorandum on 15 February 1949. It sets continuing Air Force requirements for information on unidentified flying objects, including "Flying Discs," and tells commands to send reports to Air Materiel Command at Wright-Patterson AFB. It also includes a detailed checklist covering sighting details, observers, radar data and physical evidence, and the FBI Director appears on its distribution list.
From the source: Release of 2026-05-08 Incident: N/A, N/A. The FBI's 62-HQ-83894 case file includes investigative records, eyewitness testimonies, and public reports concerning Unidentified Flying Objects and flying discs documented between June 1947 and July 1968. The records include high-profile incident accounts, photographic evidence from sites like Oak Ridge, TN, and technical proposals regarding potential propulsion systems. Additional topics include convention programs, researcher accounts, and extensive media coverage from the period. This file is partially posted on FBI vault with more redactions and some pages missing. Included here is the complete case file with several newly declassified pages and only minor redactions.
RESTRICTED DEPARTMENI' OF THE Affi. FORCE HEADQUARTERS UNITED STATES Am FORCE DmECTORATE OF INI'ELLIGENCE WASHINGTON 25, D. C . 15 February 1949 Am INTELLIGENCE REQUIBEMENI'S MEMORANDUM NUMBER 4 UNCONVENTIONAL Arn.CRAFT PART I - GENERAL 1. PURPOSE The purpose of this memorandum ls twofold; a. To enunciate continuing Air Force requirements for information pertaining to sightings of unconventional aircraft and un1dent1f1ed flying objects, including the so-called "Flying Discs. " b. To establish procedures for reporting such information. 2. RESCISSION Department of the Army Collection Memorandum Number 7, dated 21 January 1948, and letter, CSGID 425.1, dated 25 March 1948, both subject as above, which have been transferred to Air Force agencies for action, are herewith superseded. 3. REPORTING a. General (1) As complete an answer to the requirements enunciated in Part II, as may be procur able, should be dispatched by means of electrical transmission immediately after sightings. (2) Supplementary reports should be forwarded as available by the most expeditlous means consistent with the importance of the information reported. b. Major Air Commands (Overseas) and Air Attaches (1) Initial and supplementary cabled reports will be transmitted to the Director of Intem gence, Headquarters United State:s Air Force. Cables will contain the phase, "Pass to COMGENAMC WRIGHT-PATTERSON AFB, DAYTON, OHIO, ATTN: MCIAX0-3." RESTRICTED
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Official release, from the pursue collection. The PDF is mirrored here; the original link is above. 137 pages are in the text index: search them above, or from the library's search.