Documents / Analysis

Project Blue Book Special Report No. 14: Analysis of Reports of Unidentified Aerial Objects

United States Air Force, Air Technical Intelligence Center · 1955-05-05 · 309 pages · text from the file's own layer

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.

Fo/t /ILL. S/jN P^RNfc
S-
;•
t-
M T H E R
NOT 5TflTED
Total
JAIV !//)£.!/
Const
£
7
Number
Variable
/
0
(5
0
0
1
Total
q
1?
7
o
IS
59
Percent
Const
JU
m
M i
Variable
1-1
0,6
O.b
0,0
00
0-0
Total
15,':
3d\
n>a
00-
Number
Const
o
2.
j
Variable
0
0
0
(3
0
0
Total
J
3
0
,
2
1
Per Cent
Consl
ML
Jil
0.0
m
J#.r)
Variable
AD
0.0
04
0.0
0.0
0.0
6.6
Total
111
IU
w.
Number
Const
x.
1
1
Q_
$1
Variable
1
0
0
0
0
0
1
Total
21
j/
7
0
X
Per Cent
Const
_Jt
1,11
JU
Jll
o.o
35
(¥.\
Variable
1.1
o.c
oo
OA
04
0.0
/ • *
Total
i
49.2.
11
0.0
3.1
106.
AP#IL
Number
Const
9
1
*/
0
II
Variable
1
1
o
o
0
0
I
Total
3/)
2
%l
0
II
H7
Per Cent
Const
m
*y 3
I.'j
0.0
Variable
7 1
0-0
M o.oiOO.l V . S
Total
3/7
V3
(0.O
10/3.
Jt!>t;rpooRS
'•IN pLftNE
«-/NRLDG.
5-
6-
7-
8-
9-OTHER.
MOT STflTEO
Tom
M/)i/
Number
Consl
3
Variable
0
3
0
0
o
o
3
Total
)
33
3
0
Per Cent
Const
j n
J*A
-0£
J>JL
us93.1
Variable
o.b
Q.L
M
CO
Total
n
0-0
(\.O
11.1
Ji//l/£
Number
Const
3
1?
__L
6
__&
3
Variable
0
0
0
o
o
o
0
Total
3
ifi
0
0
.?
Percent'
Const
12.0
MA
JLO
O.b
Variable
0M
ol
0-C
0.0
0
fit
Total
\M>
111)
u0.D
at
\u
Jc/i-V
Hunter
Const
1
1
0
Variable
0
0
o
o
o
o
0
Total
V
9
/
0
0
1*
Percent
Const
ML
0-0
0.0
3ttA
100.0
Variable
0.1)
fl-C
0-0
0-0
0.0
Total
H.U
U
0.0
6.0
Number
Const
/ /
31
0
0
&
_ i
JL
Variable
0
0
0
o
0
0
0
Total
II
o
o
0
9
Percent
Const
1L2
O.O
o.o
0.0
/7.3
IQO.O
Variable
fi-0
0.0
0.6
0-0
0.6
OA
c.o
Total
us
no
n-s
106-
10-
'-IN CftP
hlM PI-RNE
•-IN RUDG..
5-
6-
7-
8-
9-OT1+ER.
NOT STATED
Total
SE(>TEM8E/£
' Number
Consl
1
0
o
O
Variable
o
0
o
(J
0
0
0
Total
I
2,
o
o
0
o
3
PetCent
Const
U.I
0.0
Variable] Total
_M332
fi.h
OJ) 01
u
ox
oi oi
Number
Const
1
3
_ ^
0
_ 4
13
Variable
o
O
O
Q
o
o
Q
Total
1
0
o
1
i3
Percent
Const
JA
Mi
J i l
_^5
0.1
2bA
100.6
Variable
0-0
cfi
0,0
0,d
0,0
Total
r\
A0
^.7
/06.
A>G>i/£Wff£ie
Hunter
Const
JL
_ J L
.
I
IS
Variable
r>
0
O
O
o
o
0
Total
•P
I1
1
15
3H
Per Cent
Const
5.
100-
D&e.£mg£/e.
Number
Const
_ 1
_ i
_i2
-1
Variable
o
3
o0
0
0
3
Total
7
0
0
1
V\
PnCent
Const
05.9
M.2
\H$
O.0
o.O
m
Variable
II. I
0.0
Q.O
0.0
0.6
II-1
Total
, ? * *
0.0
15.9
216

Cases discussed

About this file

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.