PROJECT BLUE BOOK

Prores WIACE on *as Astrom.
x 4s Probubiy Astoromucnl
Ni.. Radar Cperators OcssAstonomy
A LaTURrS
CASERY 2 CO06SE y
nicient Oaa lor Evoloaton
.
30 min One
10. . SAEF SUNMARY O5 EGTG 11. COMNENY .
Coject observed on AN/APG-/1 radar scoce of 1. This roport should be sont to lir.
-36 a/c 40 ATIAE, for ATIC rador analysis
as soon as scope photos arrive.
disappoared Object was observed 2. I.t has first-hand info
intormittently for period of 30 ninutes. No and should be intcrrogated upon re-
visual sighting was mnds. Ho air traffic .. turning to WADC.
was observed during electronic sighting.
-

RR JEPHQ JEDWP JEDEN 333 -
•
DE JWFAF 6B 0 0
R 352030Z ZNJ
FM AF PLANT
0 TO JEPHQ/DIR CE INTELLIGENCE HQ USAF WASH DC.
JEDWP/AIR TECHNICAL INTELLIGENCE OHO
JEDEN/CG ENT AFE COLO
JEDWP/CG AMC WRIGHT PATTERSON .
INFO JWFAF/CO SOAPD FTW :
PD OF APRX 33 MIN.
INSTLD CN NOSE OF B-36 EQUIP FLT TEST ACFT. PHENOMENON DETECTED AT
PER HR INDICATED. PHENOMENCN
AN/APG-41 AND ALG°SEE TO NO CO-16-3E-APG-41-3

RONITING COMMUNICATIONS CENTER NO.
JOINT MESSAGEFORM (
wie
SPACE ABOVE FOR COMMUNICATIONS CENTER ONLY DATE-TIME GROUP SECURITY
FROM: (Originator)
0513302 JAN 52
PRECEDENCE ACTION INFORMATION
CO ATIO FOR: MOUTIR
TO: APLAT RR HTATIVE ORIGINAL MESSAGE
COMER FTW I TXAS BOOK MESSAGE
CRYPTOPRECAUTION
MULTIPLE ADDRESS YES NO
REFERS TO MESSAGE:
IDENI TICATION CLASSIFICATION
INFO:
FROM
.
.
unidentified aerial object. Projeot alue Rook desires T set
In raply poit
,
- Cheke
DOWNGRADED AT 3 YEAR INTERVALS:
DECLASSIFIED AFTER 12 YEARS.
DOD DIR 5200.10 UNCLASSIFED
SECUR
1 PAGES
DRAFTER'S NA sigmature, when regusired) RELEASING OFFICER'S SIGNATURE
IR.M. te
SYMBOL TELEPHONE OFFICIAL TITLE MANN.
ATIAL5 65765 ALR ALJUTAT T GESRAL
DDMA 9173 REPLACES WD AGO FORM 11-168, 15 JUN 1945, AND WD AGO FORM 0990, I APR 19M, WHICH MAY BE USED. 10-593-9  U. S. GOVERNMENT PRINTING OFFICE : 19%0-O-875946

FH AF PLANT REPRESENTATIVE CONVAIR FTW
B OHIO
T
INFO JWFAF/CO SOAPD FTU
- IP. URNSG
AFOIN-ATIA OF 0-15
cyl
-

MULTIPLE ADDRESS CRYPTOPRECAUTION
YES NO
REFERS TO MESSAGE: :
IDENTIFICATION CLASSIFICATION
INFO:
FROM,
DECLASSIFIED AFTER 12 YEARS.
DOD DIR 5200.10
.
S-WIIAV
Toxes, area 24 leo 5a. Wo find ineident extrenely Lnteresting anl apreciate your
a radar enalysia t OALNI ucual
.

ROUTING COMMUNICATIONS CENTER NO.
JOINT MESSAGEFORM
UNCLAS FIED
SPACE ABOVE FOR COMMUNICATIONS CENTER ONLY
FROM: (Originator) Al 53 SECURIC
CO ATIC PRECEDENCE ACTION INFORMATION
FOR:
TO: BOOK MESSAGE 0 ORIGINAL MESSAGE
CRYPTOPRECAUTION
YES NO
. REFERS TO MESSAGE:
IDENTIFICATION CLASSIFICATION
INFO:
-
Ia reply Rook.
.
#
UNCUASSIFIED
SECURITY
PAGE OF PAGES
DRAFTER's NAME (and signature, tohen regtsired) RELEASING OFFICER'S SIGNATURE
LP R.M. OLSSON/vB
ROALRT E. LLOR, USA
SYMEZL5 TELEPHON OFFICIAL TITLE ALR AN
FORM REPLACES MME FORN 171. 1 MAY 49 16-53933-3 U. B. GOVZRMMENT TING OPFICE

FN AF PLANT RE
/R
AFOIN-ATIAA-1-3-E. /i/ CLOU SIGHTING . A/C APRX 13 2DD

ROUTING COMMUNICATIONS CENTER NO.
JOINT MESSAGEFOKi
UNCLASS
HO.A
SPACE ABOVE FOR COMMUNICATIONS CENTER ONLY DATE-TIME GROUP SECURI
FROM: (Originator)
11930Z JAN 53
PRECEDENCE ACTION INFORMATION
CO ATIC FOR: POU.IND
TO: MPA ORIGINAL MESSAGE
GONSOLILALD VUL A/C CORP BOOK MESSAGE D
PT WORTH TCXAS CRYPTOPRECAUTION
MULTIPLE ADDRESS Y N
REFERS TO MESSAGE:
IDENTITCATION CLASSIFICATION
INFO:
Ill
FROM:
.
OTTI SVILV
from the original 0-15 f1 ately
laoks onough detail.
-
. ATIM-
-
ATIA
SSIFIED
INCL
PAGE 1 oF 1 PAGES
DRAFTER'S NAME (and ignature, whem required) RELEASING OFFICER'S SIGNATURE
LT R.M. OLESON/T
SYMBOL TELEPHONE OFFICIAL TITLE RODERT B. KLMELY, MAJOR, USA7
65365 ALL ALJUTANT CENARAL
DDA9173 REPLACES WD AGO FORM 11-18, 15 JUN 1945, AND WD AGO FORM 0990 I APR I9M6, WHICH MAY BE USEO.

RR JEDWP
DE JUFAF 2
R 0417402 .
FM AF PLANT REPRESENTATIVE CONVAIR FTW
TO CG ATIC VRIGHT PATTERSON AFD OHIO
SORFE-2-22-E F PROJECT DLUESOOK - URMSG

Fort Worth 7, Texas .
i THRU: THIOY Commanding Commanding General General
Air Materiel Command
Wright-Patterson AF Base, Ohio Wright-Patterson AF Base, Ohio
.
TO: Director of Intelligence Intelligence
Headquarters USAF
Washington 25, D. C.
Attached hereto, as Inclosure hereto, as Inclosure l, is 1, au mitted in itted in
accordance with par 7 accordance w h par , AFL 200-5.
FOR THE
AacecnRay
1 Incl JACK M. ROGERS
Air Intelligence Information Lt. Colonel, USAF
Report, AF Form 1l2 w/4 Incls Deputy AF Plant Rep entative
(in quad)
Cy to:
Chief, FE
…… 1st Ind soIs/sw/sw
DITHORAWW (OR NDT AFTAGMEO THE CLASS!- FYCATION :
Of IMIS CORRESPOMDENCE MTLL UF
AFN 235-1. CAMCHLLED IN AGSDRDANCE MITH PAR. 25E
x 9038, Fort Worth, Texas 13 Jan 53
TO: Commanding General, Materiel Command, -.
Base, Ohio UNCLASSIFIED
DOWNGRADED AT 3 YEAR INTERVALS; z
DECLASSIFIED AFTER 12 YEARS.
DOD DIR 5200.10
C2319

apparent that this "noise" same phenomenon as was detected and tracked a few-
mninutes'later by both radar sets plan and report. are attached as
inclosures 1 and 2.
2. Although nothing could be seen the members
following facts di tated that this report be submitted:
a. The phenomenon was detected by both radar sets.
b. Its behavior of attempting to
dunin 000 aat
DOWNGRADED AT 3 YEAR INTICRVAYR:
DECLASSIFIED AFTER 12 YEARS.
DOD DIB 5200.10
INCLS.
2. Report est Flight dtd 24 Dec 52
3. Statement by AN/APG/41 operator
4. Statement by AN/APS-23 operator
DISTRIE NGINATOR
UNCLASSIFIED
NOTE THIS DOCUMENT CONTAINS INFORMATION AFFECTING THE NATIONAL DEFENSE OF UNITED STATES WITHIN THE MEANING OP THE ESPIONAGE ACT. 5O U. S. C.—
31 ANO 32, AS AMENDED. ITS TRANSMISSION OR THE REVELATION OF ITS CONTENTS IN ANY MANNER TO AN UNAUTHORIZED PERSON IS PROHIBITED BY LAW.
IT MAY NOT BE REPRODUCED IN WHOLE OR IN PART. BYO UTCDASINTESA VORCE AGENCIES, EXCEPT BY PERMISSION OF THE DIRECTOR OF
INTELLIGENCE, USAF.
C-3319
(CLASSIFICATION) 18-566

2. One positiv ansparency copy enomenon
closed.
3. If inclosure 1 is this
correspondenc UNCLAS in accordance with paragraph 25E,
AFR 205-1.
.
Incls L Il, Major, USAF
a/s Chief, Airorant an Propulsion Branch
TechnicaY Aneysis Division
Air Technical Center
UNCLASSIFIED
DDR9 REPLACES NME FORM 96. 1 OCT 16-54801-3 U. S. GOVERNMENT PRINTING OPPICE :1952 0 · J96975

distinctive cou found on
4. Phenonenon observed ho miles East of Dallas, Texas, miles Northeast
of Dallas on both North and South headings at 40,000 descent to 15,Coo
ft. in the area surrounding Lake Dallas. Phenomenon was no longer detected below
altitude of 15,000 ft Phenomenon was tracked at distance 2,000 4,000 yards
range appearing intermittently at different azimuth locations plus minus 30
was made
have and flight testing their
respective equipment several years. Radar set AN/APG-41 was instrumented with
an 0-15 The O-l5 film was not clear, but does
indicate presence an nomenon.
.
DOWNGRADED AT3 YEAR
DECLASSIFIED AFTER 12 YF
DOD DIB 5200.10
NOTE: THIS DOCUMENT CONTAINS INFORMATION AFFECTING S THE NATIONAL DEFENSE OF UNITED STATES WITHIN THE MEANING OF THE ESPIONAGE ACT, SO U. S. C.-
3I AND 32. AS AMENDED. ITS TRANSMISSION OR THE REVELATION NOF ITS CONTENTS IN ANY MANNER TO AN UNAUTHORIZED PERSON IS PROHISITED BY LAW.
IT MAY NOT BE REPRODUCED IN WHOLE OR IN PART AMTGO.STATES AIR FORCE AGENCIES, EXCEPT BY PERMISSION OF THE DIRECTOR OF
INTELLIGENCE, USAF.
.
16--56570-1
.

descended at the same rate as the B-36 and maintained a dista to 4000
yards ahead of he B-36. Whenever the B-36 established a ne heading that the
phenomenon was entirely out of th search sector of the G-41 antenna, the G-hl
would not detect anything for a period of several seconds up to 3 minutes.
Then suddenly the phenomenon would reappear an d the G-4l would again detect and lock
cl.No.4for details.
10. No
electronic sighting.

T
IV $F$ od or AR.6 Radte fewube Fanai Anteaid ( T 1
920
Ty
vI Evaon Rabie Amdtton Boxs (F.2.7 126).
.
200
te
T
4 .

2
1500
* 2500
3500
Contimuatio Retato-hiaial
816 Vio: 150 MPH Wire mucodes
Coutery Mitahell Catbrs
a

2
335 +
T 370 ?5
335
3.

rrird bitrss; fare mile sraaktes
d4y00012y
1A1. Mn bet; ire wtle tra:kieg
2600J37.
7AL Pier ip tovet Prod atn ponikion
Rith aigat at broafeidr. Han tuvas
ino aft osi then torserd asiaath .
th/ts, thew Iot tuerat stov fron.
broudelds. broudeids. Punyet shouid bo at -30 Punet should bo at -30"
durtog rud. durtog ruc.
6"7 LAA LAA Piek up turret froa stor gositlon. Piak up turret froa stor gositlon.
Aih sighe at Droudside. Kua daide
turret ibco uoper and dhse iotar
B:rsatlolAiatte, chan let turret
dto fon lover elevatioe Iinit at.
Droudside poatelon
27 YAL Plei up turrvt at stoy positloe uish
slgnt at acoy positiob. Pxorsad to .
sun the turret dp ths Sorbard sontour
ttatt to the broddside poditton. Taice
sa'ert to bhd afe tirfe and rue threat
to the mour sontour iimde1 Lst turet
ney fron bxcadeide. T
28 LAL teke burrst uo doutour Jete  tigh
RO20 popir 3u.
26 CAL Pake turrst to brondsid ooaitduer and
Anproneatelg-3o 1A -teletion ard
proyera to Mdrg tley oe
Bighs should be noed rapitly in d
sm3/t eireniet notton.
4 Rnkre the Lt bueok
40 "STARDEh

TECE
ubeitts
Phirtorta(i-s 643 .
.
SAT fron atoy usition
sight t broadaide futurrel
17 71 wih
..
FAL Miu ap trret ars
itt a stos
eu roe taet y thetarekd gente
71i5 to th- 3rat62id- gei1ti0n
so ta thte oni to tuyt
up tne Yedt caonr aiss Let Caree
ator feoa boalosde
OAL Ta st doonooAitgttgh
3C VAL Iake purgat to brgadatde gonitien aid
apootXoatoly 430 In oletaticn and
Puoed 6 trg ty ay A dut,
siohitoildbe

10 7
PART C 66 60,.000 26. 4
Afterds F PAy -gpend compxesrnt
of ammuidtio
COA2 2 S heury ar1ed th 04
barst
T dreatNiagAtt
ahrse ad ahrgeand
gwx stospagr nesers gux stopaty neney cos aurel tie gia batore attapiteg cos auraitie gia batore attepsteg
anyh * 9.
at 20e: as 20e: n
the gu fo luti zs Sranhs the LAs Ak And NAd RA go Sasds the IAS Ak And NAt E gon
$egrata(ai Cak)
. PARTD.EDO +
Ar510 90 0,000F 0A -4 LSR
Epged de tei bar anitton at ho. ooo . 7A wot. roand
sounters sloe ijo or more kotnds miaialog i0 eauh win. Descerd
to 10 000 to 4 yne aseiitlon abcard to the gtd,
+
and cocdnat a trut12a To s0 O0) 6 PA.tt 40,000 f7
AE2
. configuratton at the tollngng Sniitald teigeed. Vha Lbs
1
Opasd in Ndolsd ae ta
42=5-
PMNO.
165

0 yOuTE pN 1
C
4
pover
PARTC Smita 06611a830.000 1t
Afbec a tid 3t 90 003 Tt FA; etpanX domplemeot
of amucition &edordlog to tho in-kiisot gunnety proeedure vich
burata Brewd Makoaliy at ih thy gooner atth the g
mustiee rather th th sgota duri E aetdat CLsing- Au onafte
ahargow Dd aswiti ahargow Dd awtt lesrtlk Coere lve un okt. turrca turrcn
gun atoppage srue gun atoppage erue ris o the gperatlee gud bafore asteepilg . .
any hodb gties aby hodbgties The holdlas sien wila De oporuted The holdles sien aila de opsrutsd
the gues fow fosther Nete the guns fow fosther Petng MeASU'e thn EAR AB and NAR BH CU
tomperatere (wnite Siedeg).
PART D- Enlatix of Bpabe Cnnilo Bore at 0, 0o0 8. 21
Expand the tall Eurketlavabitiod at ho, Ooo tt. PA watid rount
counters gnoy i5o or more rounde romalnlog in each gun. Deatend
and cocdart a routiee atab zo bd, 000 at. Pt. at ho,00n rt..
expand ahi the tal tar: awnttlos.
U
Deswend ko 10, Oo0 tt. e and Ahalilise 2e airpiant in sise
configuration at tpe fotloning indinasel airped. Whas the
apaed 1o stabi1d, eedd th a1x ters ad  on th
dra3
RUE RO. MMELAAA
165

.
:
+

.
0

.
Andrews .
.
.
Johnson
.
. ..
1
ElRd
7

pooitlen., In aoy ovedt, ponfowende of tho sysser ral not
20 --
on the controllerd. He dats waile Pivdng vore obteiued. Dats
tore obtatned foe the CAL turret euly, aS the DAL turrat veth4
not extund, +
DOORSONL
uooatiatsesoeg Teather
Gondlelono at
OCULOORATON
AOTEE
letotiyo end ecatuord
whlea.
CONFIDENTAL
SECURITY INFORMATION

PROET & 24 Deocmbav 1950
COPORATON PA (Cont'a)
ANAR
The uppep art Stn besters gove diescmeeted aad g03 lubrleated
With 5peo1al od1 55019.
Tall radar ALo and O-15 saaer was reloved and Installed in
Sot ehsone guno vare inotallod,
Sine to obtain tasa line duta at high ropor apesd,
Nose redar inntzrertatien taa colttrobod.
SEERAL
B
SECURITY INFORMATION
a

or left of the hose assure I asked the pilot to
maneuver the ship after ] trackability. This showed
target to be very stable trackable.. At this time we had spent
sone 30 minutes with the target and when we started to descend the
target stayed with us dowm to about point ground
return was triggering my system, and longer seen. .
This target did not look like normal retul other
aircraft. The only thing that I have eve er seen to resemble it was
spent 20 M I shell cases which I have tracked before the APG/41 )
tail system in
L-63E

indicated, I di ange In almost every instance I would
see the target tine the AN/APG-4l had detected and
locked on. APG-L1 operator would call out range of lock on, and -
my range would mparable to his. On one occasion I detected a
second target farther approximately one mile), and on several
occasions I could se another target 30 to 45 degrees either side of
the one he was locked one occasion I switched back to search
picked up the target the airplane, and followed it out of 4.5
mile range. These ta very sharp and with RF gain could
be tuned very bright. However, they were unusual in the fact that
they did not track in fre the edge of the scope but would appear on
the scope at a range of two to four miles. They also might remain
C-635

.
.

Ac
: 2
0728

A

HE
A
-
NE
T

Ad
- 5
N
A

Aeser
Poceteon

5
1 E
0741

16
8
-
0744

8
a
0747

6
18
12 10
0750

2
Ad
0750

-

8
B
12 10
Act 0
M
AiArM
0759

8
12 10
nct C
0762

24 2
9
6 al 85
Act
R4
0765

to lelt tha
return baxe
.

e
6
8
0768

18 P6
Act M
t
0771

18
ACt

8
i2
0777

6
8
is Act

Act Act
i
FIU 42
0788

Act G2
51 -
110
0788

2
Act -
0792

18
.

- 7.3
the
61 Manin
20I
.

coull
.
+
.

T
PAGE 6P
/4/ PHENOMENON OBSERVED 40 MILES E OF DALLAS TEX TO 80 MILES NE. OF
- DALLAS ON BOTH N AND S HEADINGS AT 422SE FT AND ON DESCENT TO
15000 FT IN THE AREA SURROUNDING LAKE DALLAS. PHENOMENON WAS NO
C LONGER DETECTED BELOW ALT OF 15O00 FT. PHENONENON WAS TRACKED AT DIS
C OF 2000 TO 4E20 YARDS RANGE APPEARING INTERMITTENTLY AT DIFFERENT
AXIMUTH LOCS PLUS OR MINUS 3% DEGREES AND MINUS 5 TO MINUS 15 DEGREE AXIMUTH LOCS PLUS OR MINUS 3% DEGREES AND MINOS 5 T
ELEVATION. ALTHOUGH AN INTENSIVE VISUAL SE ELEVATION. ALTHOUGH AN INTENSIVE VISUAL S MADE PHENOMENON
(. WAS NOT SEEN BY THE PLT OR ANY CR/M.
/5/ BOTH RADAR OPRS HAVE BEEN OPRG AND FLT TESTING THEIR RESPECTIVE
J J EQUIP FOR SERVEAL YRS. RADAR SET AN/APG-41 WAS INSTRUMENTED W/ AN
0/15 CAMERA. FILM WAS NOT CLEAR B 0/15 CAMERA. FILM WAS NOT CLEAR BUT DOES S INDICATE PRESENCE AND CE AND
TRACKABILITY OF PHENOMENON. .
J WAS CLEAR NEAREST CLOUD
/6/ WEA CONDITIONS. IMMED AREA
C WERE APRX 4 MILES DISTANT.
/7/ AN/APS-23 PRESENTATION OF PHENOMENON WAS SIMILAR TO RECENT AF
( C.
RELEASE OF PPI PHOTOGRAPHS OF SIGHTINGS MADE OVER
/8/ PHOTOGRAPHS OF AN/APG-41 SCOPE ARE AVAL..
/S/ MANEUVERS WERE MADE BY THE B-36 ACFT TO PROVE TRACKABILITY OF THE
(
PHENOMENON. BY OBSERVING THE AN/APG-41 ANTENNA PSN WHILE TRACKING
THE PHENOMENON IT WAS DETERMINED THAT DURING THE E-3S MANEUVERS S THE
PHENOMENEN REMAINED ON ITS SAME APPARENT CRSE AND SPEED.
( /1S/ NO AIR TRF WAS OBSERVED IN THE DALLAS AREA AT THE TIME OF F THE
ELECTONIC SIGHTING.
3/2200Z DEC JWFAF I
©
.

. DE JWFAF 6B
C ( (
R_30203EZ_ZNJ :
6 FM AF PLANT REPR SENTATI
(
TO JEPHQ/DIR CF INTELLIGENCE HQ USAF WASH DC
6 NTELIT CDNCE
( INFO JWFAF/CO SOAPD FTW
SORF-12 ATUNCLASSIFIED
A-2C. SOAPD FOR SOF.
SUEJ FLYOBRPT. THE FOLG INFO IS SEMD AFL 200-5 APR 52.
/1/ OEJECT NOT SEEN VISUALLY.
/2/ PHENOMENON SIGHTED 24 DEC 52
2
RADAR
TXNT ACFT. PHENOMENON DETEC AT