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

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QQDE 43 OBSERVATION METHOD
CODE 44 SOUND
X Variable
X Variable
y
y
0 Naked eye
0 Motors
1 Eye glasses
1 Jet or rockets
2 Window
2 Explosion
3 Windshield
3 Unlike aircraft
4 Binocular
4 Hiss, swishing, whining
5 Telescope
5 Rumbling
6 Theodolite
6 Humming or buzzing
7 Radar
7 None
8 Photographic
8 Not stated
9 Other
9 Other
CODE 45 COLOR
CODE 46 NUMBER
CODE 47 LIGHT-COLOR
X Variable
X
X Variable
y
y
y
0 Metallic
0 - 1
0 White
1 Light-glow-luminous
1 - 2
1 Black
2 Red
2 - 3
2 Grey
3 Orange
3 - 4
3 Red
4 Yellow
4 - 5
4 Orange
5 Green
5 - 6
5 Yellow
6 Blue
6 - 7 - 10
6 Green
7 Violet
7 - 11 - 20
7 Blue
8 Black
8 - 20 - 30
8 Violet
9 White
9 - 31 or more
9 Other
CODE 48 SPEED
CODE 49 SHAPE
X Variable
X Variable
y
•
y
0 Hovering, stationary
0 Ellipse
l
Less than 100 m.p.h.
l
Rocket
2 100-400 m.p.h.
2 Conventional aircraft
3 More than 400 m.p.h.
3 Unconventional aircraft
4 Meteor like
4 Meteor, comet
5 Not stated
5 Lenticular
6
6 Conical
7
7 Tear drop
8
8 Flame, tails, fire
9 Other
9 Other
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