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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.

Open the PDF at page 10 Original source ↗

“Headquarters”35 pages

  • p. 1 …HQ - HEADQUARTERS . Class / Case # Sub Vol. Serial # 0062 83694 1 164 ONLY 8/11/1274166 I11…
  • p. 2 RESTRICTED r DEPARTMENT OF THE AIR FORCE HEADQUARTERS UN1TED STATES AIR FORCE DIRECTORATE OF INTELLIGENCE WASHINGTON…
  • p. 3 …be forwarded to the Director of Intelligence, Headquarters United States Air Force. (3) Commanding General, Air…
  • p. 10 RESTRICTED DEPARTMENT OF THE AIR FORCE HEADQUARTERS UNITED STATES AIR FORCE DIRECTORATE OF INTELLIGENCE WASHINGTON 25…
  • p. 11 …be forwarded to the Director of Intelligence, Headquarters United States Air Force. (3) Commanding General, Air…
  • p. 18 …FORCE HEADQUARTERS UNITED STATES Am FORCE DmECTORATE OF INI'ELLIGENCE WASHINGTON 25, D. C . 15 February…
  • p. 19 …be forwarded to the Director of Intelllgence, Headquarters United States Air Force. (3) Commanding General, Air…
  • p. 26 RESTRICTED DEPARTMENT OF THE Affi FORCE HEADQUARTERS UNITED STATES AIR FORCE DlRECTORATE OF INTELLIGENCE WASHINGTON 25…
  • p. 27 …forwarded to the Director of Intelll.gence, Headquarter s Unlted States Alr Force. (3) Commandlng General…
  • p. 34 RESTRICTED DEPARTMENT OF THE AIR FORCE HEADQUARTERS UNITED STATES AIR FORCE DIRECTORATE OF INTELLIGENCE WASHINGTON 25…
  • p. 35 …be forwarded to the Director of Intelligence, Headquarters United States Alr For ce. (3) Commandlng General…
  • p. 42 RESTRICTED DEPARTMENT OF THE AIR FORCE HEADQUARTERS UNITED STATES AIR FORCE DIRECTORATE OF INTELLIGENCE WASHINGTON 25…
  • p. 43 …be forwarded to the Director of Intelligence, Headquarters United States Air Force. (3) Commanding General, Air…
  • p. 50 RESTRICTED DEPARTMENT OF THE AIR FORCE HEADQUARTERS UNITED STATES AIR FORCE DIRECTORATE OF INTELLIGENCE WASHINGTON 25…
  • p. 51 …be forwarded to the Director of Intelligence, Headquarters United States Air Force. (3) Commanding General, Air…
  • p. 58 RESTRICTED DEPARTMENT OF THE Affi F ORCE HEADQUARTERS UNITED STATES AIR FORCE DffiECTORATE OF INTELLIGENCE WASHINGTON…
  • p. 59 …be forwarded to the Director of Intelligence, Headquarters United States Air Force. (3) Commanding General, Air…
  • p. 66 RESTRICTED DEPARTMENT OF THE AIR FORCE HEADQUARTERS UNITED STATES AIR FORCE DIRECTORATE OF INI'ELLIGENCE WASHINGTON…
  • p. 67 …be forwarded to the Director of Intelligence, Headquarters United States Air Force. (3) Commanding General, Air…
  • p. 74 RESTRICTED DEPARTMENT OF THE AIR FORCE HEADQUARTERS UNITED STATES AIR FORCE DmECTORATE OF INTELLIGENCE WASHINGTON 25…
  • p. 75 …be forwarded to the Director of IntelHgence, Headquarters United States Air Force. (3) Commanding General, Alr…
  • p. 82 RESTRICTED DEPARTMENT OF THE AIR FORCE HEADQUARTERS UNITED STATES AIR FORCE DIRECTORATE OF INTELLIGENCE WASHINGTON 25…
  • p. 83 …be forwarded to the Director of Intelllgence, Headquarters United States Air Force. (3) Commanding General, Air…
  • p. 90 RESTRICTED DEPARTMENT OF THE AIR FORCE HEADQUARTERS UNITED STATES AIR FORCE DIRECTORATE OF INTELLIGENCE WASHINGTON 25…
  • p. 91 …be forwarded to the Director of Intelligence, Headquarters United States Alr Force. (3) Commanding General, Air…
  • p. 98 RESTRICTED DEPARTMENT OF THE AIR FORCE HEADQUARTERS UNITED STATES AIR FORCE DIRECTORATE OF INTELLIGENCE WASHINGTON 25…
  • p. 99 …be forwarded to the Director of Intelligence, Headquarters United States Air Force. (3) Commanding General, Air…
  • p. 106 RESTRICTED DEPARTMENT OF THE AIR FORCE HEADQUARTERS UNITED STATES AIR FORCE DIRECTORATE OF INTELLIGENCE WASHINGTON 25…
  • p. 107 …be forwarded to the Director of Intelligence, Headquarter s United States Air Force. (3) Commanding General…
  • p. 114 RESTRICTED DEPARTMENT OF THE AIR FORCE HEADQUARTERS UNITED STATES AIR FORCE DIRECTORATE OF INTELLIGENCE WASHINGTON 25…
  • p. 115 …be forwarded to the Director of Intelligence, Headquarters United States Air Force. (3) Commanding General, Air…
  • p. 122 RESTRICTED DEPARTMENT OF THE Affi FORCE HEADQUARTERS UNITED STATES AIR FORCE DmECTORATE OF INTELLIGENCE WASHINGTON 26…
  • p. 123 …forwarded to the Director of Intelll.gence, Headquarters United States Air Force. (3) Commanding General, Air…
  • p. 130 RESTRICTED DEPARTMENT OF THE Am FORCE HEADQUARTERS UNITED STATES Am FORCE DmECTORATE OF INTELLIGENCE WASHINGTON 25…
  • p. 131 …be forwarded to the Director of Intelligence , Headquarters United States Alr Force. (3) Commanding General, Air…
RESTRICTED
DEPARTMENT OF THE AIR FORCE
HEADQUARTERS UNITED STATES AIR FORCE
DIRECTORATE OF INTELLIGENCE
WASHINGTON 25, D. C.
15 February 1949
AIR INTELLIGENCE REQUIREMENTS
MEMORANDUM NUMBER 4
UNCONVENTIONAL AIRCRAFT
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 establlsh 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, ar 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 reports 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 Director of Intelll
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.