Documents / Report
This August 1949 technical report from the US Air Force Air Materiel Command presents Project Grudge's investigation of unidentified flying objects through January 1949. Drawing on consultants including Dr. J. A. Hynek, Rand Corporation, the Air Weather Service and Dr. P. M. Fitts, it explains most of 244 incidents as balloons, aircraft, astronomical phenomena, hoaxes or psychological errors. It concludes the objects pose no direct threat to national security and recommends reducing the investigation in scope.
# LEADQUARTERS AIR WASHINGTON BALVIGS Andrew Air Force JAS Washington 25, D. C. In Supply Refer To: AFS DB$ SUBJECT: Unidentified Flyin; Obj.404 TO Commanding General Air Interior Command Bright-Pattern Air Force Base Dayton, Ohio ATF: BC [AID-3] 1. Reference is made to letter from your headquarters, CIAIS, dated 9 March 1947, subject "Unidentified Flying Objects," and first indulgence thereto by this headquarters, dated 31 March 1948. 2. The inslodent surmaries 173 through 233 have been enclosed against routine weather-balloon incidents done by the Air Force, Navy and Weather Bureau. Concerns based on this review are disclosed. 3. It is recommended that the "Guide To Investigation Of Unidentified Serial Objects" be charged as follows: Item 13, "Direction of Flight of Object," should be clarified so that vertical and horizonal notions are distinguished if possible, and so that notion is specified as the direction towards which the object appears to move. "Relative to Radar Settings" should include a statement of the type of radar set used. FOR THE CHIEF, ALL EXPLORER S.34133 2 Imple: 1 - Incident Summary 2 - Comments 173 thru 233 /4/ W. A. West B. A. JUST Lt. Col., U.S.A. Adjutant General
Report, from the classic collection. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 413 pages are in the text index: search them above, or from the library's search.