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This FBI file serial 164 in 62-HQ-83894 holds several copies of Air Intelligence Requirements Memorandum Number 4, "Unconventional Aircraft," issued 15 February 1949 by the Directorate of Intelligence, Headquarters United States Air Force. Major General C. P. Cabell signed it. It sets out continuing Air Force requirements for information on unconventional aircraft and unidentified flying objects, including "Flying Discs," and tells commands and outside agencies to send reports to the Air Materiel Command at Wright-Patterson AFB. It also lists detailed reporting questions on sightings, observers, radar data and physical evidence.
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RESTR I CTED
3, Local flight schedules of commercial, private and m111tary aircraft flying in vicinity at the
time. {Check Canadian activity if close to that border.)
4. Possible releases of testing devices in vicinity sent aloft by Ordnance, Navy, Alr Force,
Army, Weather Units, Research Organizations or any other.
6. If object contacted earth, obtain sou samples within and without depression or spot where
object landed {and then presumably departed) for purpose of making comparison of sol.ls.
6. If object came sufficiently near other aircraft or known objects check surfaces with Geiger
counters for possible radioactivity. Make comparisons with other unaffected aircraft objects, etc.
7. Obtain photographs {or original negatives) where available; if not, secure sketches of:
a. Object.
b. Surrounding terrain where observed.
c. Place where it contacted earth (if this happened).
d. Maneuvers.
e. Formation if objects were more than two.
8. Secure signed statement.
9. Obtain fragments or physical evidence where possible.
10. Was any radio antenna to be observed, l..e., {any projections or extentlons that mlght presum
ably be construed as such).
cl?~C. P. CABELL
Major General, USAF
Director of Intelligence, Office of
Deputy Chief of Staff, Operations
DISTRIBUTION:
Commanding Generals, Major Air Commands,
ZI and Overseas
All United States Air Attaches
Dir ector of Central Intelligence
Special Assistant for Research and IntelUgence,
Department of State
Director of Intelligence, GSUSA
Chief of Naval Intelligence
Commandant (INT), United States Coast Guard
Director, Federal Bureau of Investlgatlon
RESTRIC TED - 7 - Document, cited by the archive. 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.