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.

Open the PDF at page 259 Original source ↗

“R.G.”3 pages

  • p. 245 …P _/) - 7 P P 3 ?% ToUl •6 'r? g_ 0 70 '0 5L3fy Per Cent . Certain…
  • p. 256 …c Doubtful 2, g- 0 0 ?• /g >//r/ ?G//> Total f // / /0 0 & ? 6/ /P6 S…
  • p. 258 …9 0 $ / 'i a 2£ -L 43 r/?g(. Certain / / f2> 2. I? ?; •2V 1 7…
Eviration
0-Balloon
1-Astjono«iol
2-AircraR
3-Light Phenom.
4-Binb ,
5-Clouds, Dust, etc
frlnnffic Info.
7-Psydnlo|ioi
J-Unknown
M t h e f
Total
Number
Certain
g
,/
24
/
O
17
__&_
$3
Doubtful
7
£_
/
£
£
£_
Q_
£
2.2,
Total
ff?
/7
2,
0
0
17
/ /
g-
/Of
r-r A/
'£
'IF
vr* 0
H\ Cent
Doubtful
9$
9*
/4J
00
0.0
0^P\
0.0
0./?
l¥.¥
Total
2/-3
2i-2
2fCk
fi>
0.0
/•(•
/ / • *
/00.
c
1ST /(
T//V
0/V
..7?/? .
h/.4S////r 6 r~/?/>/
Nunbci
Certain
/&
/ $ •
20
0
/0
39
/03
Doubtlul
g
1
2^
0
_£_
_£_
ff
4s
Total
23
zz
2,
/
_£_
/0
3?
, f
/¥fr
Certain
ffl-3
tf.3
0.0
07
as?
/ « • $
00
z/
•fas
erCent
Doubtful
ȴ
f-¥
00
ao
2?.
/• ?,
•3 £
2 i?
3¥C
Total

/ 2
;'- 5
2 6
s¥.£
C rtfc~/9 S
yi*£n
Percent
Certain
7-9
MS
79
0.0
//..4
3.0
20.7
#•4
ft 7
Doubtful

Doubtfu
3
r
0
0
0
z,
0
2./
Total
2/
//
22
0
0
0
3
ft
3
93
Percent
Certain
ff t
t i .
/a./
0.0
0.0
0.0
\/i,/
/./
/?.¥
Doubtfu
~2JL
00
00
0.0
00
2..2,
00
Total
HA
/It
31A
00
0,0
00
16./
73
/?,¥
3.3
too,'
r,
±326.
Certain
3
a
/)
0
y
¥
27
Number
Doubtful
3
0
0
0
0
0
0
Total
(>
/4
0
/
0
¥
0f
~fi/r/
Certain
4" 3
J2.j>
0.0
0.0
0,0
/0.S-
?•£
/ / /
- 0
PetCent
Doubtful
£3
79
(3 ?.
0.0
00
?,ff
00
0-0
0.0
00
ZZ.f
£7 S/6//T/A16 V 'A/ 7/SF #77?6 /C Fr)S
Total
3L.9
2.6
0.0
t.i.
ft. 4
0-0
£.6
/00.
Number
Certain Doubtful Total
PerCent
Certain Doubtful Total
Number
Certain Doubtfu Total
PerCoit
Certain Doubtlul Total
252

Cited by

Cases discussed

About this file

Analysis, from the classic collection. The PDF is mirrored here; the original link is above. 309 pages are in the text index: search them above, or from the library's search.