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65 HS1-834228961 62-HQ-83894 Serial 164

Federal Bureau of Investigation · 137 pages · text from the file's own layer

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
DEPARTMENT OF THE Affi FORCE
HEADQUARTERS UNITED STATES AIR FORCE
DlRECTORATE OF INTELLIGENCE
WASHINGTON 25, D. C.
16 Febr uary 1949
AIR INTELLIGENCE REQUIREMENTS
MEMORANDUM NUMBER 4
UNCONVENTIONAL AJRCRAFT
PART I - GENERAL
1. PURPOSE
The purpose of this memorandum is twofold:
a. To enunciate continuing Air Force requirements for information pertaining to sightings of
unconventional aircraft and unidentified 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 transfer red to Air
Force agencies for action, a r e herewith superseded.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 r eports should be forwarded as available by the most expeditious means
consistent with the importance of the information reported.
b. Major Air Commands (Overseas) and Air Attaches
(1) Initial and supplementary cabled reports wlll be transmitted to the Dir ector of Intelli
gence, Headquarters United State:s Air Force. Cables will contain the phase, " Pass to
COMGENAMC WRIGHT-PATTERSON AFB, DAYTON, OHIO, ATTN: MCIAX0-3."
RESTRICTED C9-H92, AF

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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.