Project Blue Book Special Report (second copy)

This is Project Blue Book Special Report No. 14, "Analysis of Reports of Unidentified Aerial Objects," Project No. 10073, dated 5 May 1955. The study reduced about 4,000 sighting reports received by the U.S. Air Force between June 1947 and December 1952 to IBM punched cards and analyzed them statistically, including chi square tests comparing knowns with unknowns. It concludes that the reports very probably do not represent technological developments beyond present scientific knowledge, and it notes that no case produced physical evidence.

Observer's
Data
Sheet
Question
WORK SHEET
Punched
Card
Column Code Description
2
3
h Serial No,
Serial No.
Incident s e r i a l
number
Insertion
1.
7
8
9
10
32*
33
3U
35
36
37
38
39
UO
Day
Month
2.
3.
li.
11
12
13
1U
15
16
17
18
19
20
21
22
23
2U
25*
26
27
28*
29
30
31
Year
Day
Month
Day
Month
Hrs.
Min.
Time Units
Duration
Latitude
Observed
Reported
Rec'dATIC
Time of observation
Greenwich C. T.
Duration of
observation
Location
Longitude
Cosine latitude
* Denotes separate code key i s needed.
299