Documents / Analysis
Special Report No. 14 was issued by the U.S. Air Force's Air Technical Intelligence Center on 5 May 1955. It is a statistical study of about 4,000 reports of unidentified aerial objects from June 1947 to December 1952. The reports were reduced to IBM punched cards and analyzed with methods including chi square tests. The report concludes that the reports it examined are very unlikely to represent technology beyond present scientific knowledge, and it notes that no case produced valid physical evidence.
“US Navy”1 page
Observer's Data Sheet Question Punched Card Column Code Description 6. 7. a. 1 0 . Ui* U2* U3* Where observer was Moving - Stopped Hovr observed 12. 12a. liU* 12c. US* 12e, 1*6* 12g. hi* 12i. lUb. k&* 12b. 19 U9* 12b. 19 50* 12d. lite.20 51* Sound Color Number Light-color Speed Shape a / b Size 2U. "6"2* 63 2U. 65* 66* 67* Appearance Description h. 12h. 15. 1 3 . 1U. 17. 1 2 1 . 1 8 . 12f. 1 1U. 1 8 . 16 2 1 . 19. Uf. 52* 53* 19 5<U* 55* 56* 57* 58* 59 60 61* Light brightness Angular velocity Angular acceleration Describe appearance Describe disappearance Initial elevation Final elevation Altitudej_1000 ft. Object orientation Motion Elevation Altitude Civilian occupation Observer Service occupation 68 69 70 71 72 73 7U 75 76* 77* 7a* 79* 80* Observer Report Preliminary Final Evaluation Identification * Denotes separate code key i s needed. 300
Analysis, from the classic collection. The PDF is mirrored here; the original link is under it. 309 pages are in the text index: search them above, or from the library's search.