Tnis r:)port sho'..lld b~' so~lj t..o ::r. A rlt.E, for A!IC r~d~r ar.nly~i3 as soon as pho~o~ arriva. Cb:i cc~ ou!lcrvcd on A11/ /J-'0-l~ rada r ncop"~ or n~ J~o,ooo or. decant to 15,occ, \7h~ra it d!.u:\ppoart'd fror.t scopn. Objoet -..:!ls obcorved ir.t.ol?litit.~ntly for rs-r.iod of 30 7:inut.otl. ~!o vinuul s ! f'l'htinC'I' ;:.'ls r:.~d9. no air t.r~!"flc 2. Lt has C:irst-hr.nd info .:tnrt should bo intcrro~at.cd upon r\l- 't~rnin;~ t.o '."iADC V:rJS Oboervad clurin(.' r.tlcctronic sieh liinz. 3. Co:a~....ic:t in r~r~ort on W\J.:rt.her Jot -~Lv,l~e RR JEPHQ JEDWP JEDEN 333 DE JWFAF 6B F1 AF PLANT RZPP. tNTATIVt: CONVAIR FT{I1 TO JEPHQ/DIR Ct TELLIGENC~ HQ USAF WASH JEDWP/AIR TECHtll(:AL INTELLIGENCE CENTi:R \1RIGHTTTESO AFB OHO . J~DEN/CG ENT AFE COLO JEDWP/CG AMC WRIGHT PATTERSON AFB OHIO INFO JWFAF/CO SOA?D FTW SORF-12-149-E ATUNCLASSIFIED A-2C. SOAPD FOR SOF SUBJ FLYOBRPT. THE FOLG INFO IS SBMD lAW AFL 2 -5 29 APR 52. /1/ OBJECT NOT SEEN VISUALLY. /2/ PHENOMENON SIGHTED AT 1215 24 Di:C 52 IUT~.R1:ITTE.NTLY FCP. PD OF APRX 3l MIN. /3/ P ENOMENON DETECTED BY RADAR Si::T SI!1ILAR TO AN/APG-41 \J( Al..O INSTLD CN NOSE OF B-36 EQUIP FLT TEST ACFT PHENOMENOt: DETECTED AT ALT OF 4JC0' FT ACFT SPEED 180 MILES PER HR It~DICATED. PP.ENOMENCN JOINT MESSAGEFORM I COMMUfUCATIONI CIIIITI'It NO 1--------SI'ACa A80Vai'Oit COitiMUifiCAnolfS CUf'D Olf'1 ,_ . .. '!~!! FROM: (Orlfl,..eer) DAn-n OMIUI' SECURITY c PRECEDENCE 0 IOOIC MIIIMJI B OIRII'Cll. ML .... CRYPTOIIAICAUTIDII REfERS TO ME!!IAGI: CU.IIIPICATIOII DOWNGRADED AT 3 YEAI~ IN'J';Jl\' J}. U ,: DECLASSIFIED AFTP.'R 12 YEARS. oniCIAL TITU lliPLMD WD AGO POIIM Il-l .. II .MI 1-. AIID WD AGO FORM ... I APR 1-WIIICM MAY U.D. I:lFO J~'F .\FICO S G!tPD FTJ o: ~ /1/ PtJS I TIV S tr-:-:sro FIL.~ 'JILL C\.i Alit: PRB:tDENCI 0 800tC MISSAOI 0 MULTIP\.1 AODit!SI CRYI'T~f.CAUTION 0 YES 8 HO REFF.AS TO MF.SSAGE: DOWNGRADED AT 8 YEAR i~\'T~f-(\ ~ 1..0; DECLASSIFIED AFT;;:n. 12 ~-;_._;,"\HS. DOD DlR i)2llv.10 11.~tberr t~ta ;:au ~.aw Cr))lC:ia~ \l) t.;o alt.i- olou4 dectk below t~ ... ~t~ht.i='tt o/cJ (..::) tea ';.i-.)u r.JJ: the oJ.oua b~.k Ll Relle tJIHOI/ft IYNM'% \rs ' ..UNCLASSJFt!D PRICIOINCI 0 IODIC MIUWI 0 OIIUGIM. 0 MULTIPU MW<.. D YD 0 ftO REF'IM TO M,-\01: DOWNGRADEU AT S Y I~\ T! r~, . DECLASSIFIED AFTER 12 Y t:: CIPICIAL. TITU TO CG ATIC U lGdT PATT~:~SO.-J AF;j 0~11::> S0:1F21-1ll5-Z FG.~ P.~OJE:Cf ~LUC: .JOC:\. U~:!SG AFOI~i-ATIAA-1-32 /1/ CLOUD t::CK .;:LQJ SlGit'li1~G FT ALT. 121 I NFO NOT AVAL O:J failS IT:::-: /J/ F-3:iS .:.:: \t~ i"i{ a;~;!GST:tO:i 0 IOCIK MIIU81 0 MULTtPLI ADIIII CllfFIOPRI!CMITIOH REFERS TO MmAGI: tlat befON a o be r.wle 1 t vW. lJe ~ d tJw.w ot the DltAPTIIrS NAMI e-M .. ,. .. .,., A Nfl .... ) 0/I"CIAL TITLI f-173 iliii'UC:aWDMOfiOIIMII-t .. IIJUIII ... MDWOMOPOIIM... .. 111a1 1\-U. I.IOWMUIIIMfiMU .. QJIICiaiiH 011 ... I IIAY 41 I All .... WIIICM MAY U.O. ,r:JF Af :31 Fi! AF PLAL'!T R~PJ.:sz.:TATIVZ CO Vf~It{ FTH SORFi:-2-22-!: FOK P410JSCT ._jLUF.:~OOl~ t;R;lsG AfJI.~-ATI.'\.'\-1-)-Z 3 X 10 GLOSSY Piil4lTS OF 0-15 FILi: F0:~;1A.-{DSD 1';-iiS Di' AIR FORCE PLANT CONVAIR FORT IOUTHIIN All FORT TIIAI IR RIPLI &DIRIII I"M IIIYILON Ae Cl08a.aa. CATIOM to AIR I'OIIC 9 January 1953 ATriMTIOih Soutbea A1r t Diatztict . A'l'tlf I SOI 3309 W!Dthrop, P. o. Box 9038 rcrt th 7 Cammand1na General Air Uateriel C~ci Wright-Patterson AP Base, Ohio Dheotor ot Intelligence Headquarter USAr Waehingtan 25, D. c. Attached hereto, as Inclosure 1, accordance with per 7, Al'L 200-5. 1a FLYOBRPT Report subaitted in JQl THI AP PLANT R"&fftSSSNT!TIVEa ACl u. ROGDS Air IDtelligeDce Information Report, Al F 112 w/ 4 Inola Lt. Coloael, USAl' Deput7 AP Plant Representat1"18 Chief, ATIC, W-PAFB ~-~A\11 II MM I C. lWit , o Sl. Hq, SOAPD, 3.309 ~\'inthrop, TO: Conmending General, Base, Ohio 1-'. 0. Box 9038, Fort ~'o'orth, Texas 13 Jan 53 Ai~teriel Co~d, ~lrigtlt-Patter3on AF DOWNGllAT>'Im 'AT S YEAR INTERVALS: DECI.ASSIFIED AFTER 1! YEARS. UNCL.ASSIF1ED ( .i FDI~. Jll 'PAITI AOFRO\IID I CIIUift'ltf AIR INTELLIGENCE INFORMATION REPORT 1. .r..t 121.5 h\Jurs CST, 24 Decramber 1952, '.ihlle conduct:.l."'l:~ 3 i'li~ht test o!' n.:1 _\uto:natic C.unla:ring P.adar set ~imilar t:,o one hall' of ; n l\.:'i/APG-hl equipped vli th : ut.omatic target acquisition ( short title is either ATA or ALO) installE:Id .Ln the aose ;,f u~e ar:nament l'li6ht test B-J6 !Io. 44-92054, an unseen phenomenon l1:lS cietected and tr:1cked interrnittently by the A TA of the A.GL rtadar set for a period of' approximately 3u :ninates. The nhenomenon :.ras :1lso detected at the same t ime and a:l-:Jroxi.nate po::dt.ion ln space by the .-Ui/1\PS-23 navigation radar installed on the 3-)6. '!'ha 3 - 3 6 Jir~rL:t had completed a po~tion of a flight test plan which called for ~imulatad at tacks h:l :!n r'-CJh i'i[.hter. Cn 2h December t..ro fighters (!:-BL s) ! :!.rt.ici_?a ted ln the :.:ir.t'.J.latt:!d attac:-:, o.nd t.he;r l.:ld le.fr. tne area a fo~ r..lnutt:~ f:arller to rutu:-n +.o th~ir ~a.3e. The fignter3 t;ere ':)elng us~d t,:, cv~luat.e the 1\.':'A porti.r>n of the Avl. ~adar ::e~. Tne AGL radar operator had compl~iaed oi ~hat he thou~nt ti~S n0is~. It l~ter became apparent .that this "n~ise l-:as r-ne .3ame ph~;.momenon as ;-:as detected and trac:ted a few 1ninutes'later by both radar sets. The flight pl~n ~1d report a~e attached as ir.closures 1 and 2. 2. Although notning could be follow::!.ng facts di~tated t i1at this seen by any of' tr..e n~r.1bers reoort be subnitteu: of ";.he crew, the a. The phenomenon was detected by both radar sets. b. Its behavior of attempting to remain 2000 to 4000 ~rds in front of the B-J6 during descent from 40,000 to 15,000 ~eet r.rr1s unexplainable, and seemed to indicate that something intelligent was guiding it. DOWNG'RADED 'AT 3 YP.!Alt TNTERV AT. DECLASSIFIXD AFTER l:t YBARS. l. Flight Test Plan dtd 12 Dec ~2 2. Report of Test Flight dtd 24 nee 52 J. 5tat8lllent by A."J/APG/41 operator u. Statement by AN/.,\PS-2) operator UNClASSIFIED CCNTAI .. INIOIUIATION AH&IINCITHI NATIONAL DIPINSICWTH! UNIT!OsrATCS WITHIN THE MEANING O,THE ESPION4GEACT.BO U. S .C.- ITS TRANSMISSION OR THI RIYILATION 0# ITS CONT!HTS IN ANY MAM"ER TO AN UNAUTHORIZED PERSON IS PROHI81TEO BY LAW. Olt IN PART. AGiNCifS, XCEPT BY POMISSION 0, THE DIRECTOR OF Mlllf (UNCIASSll'IED) ATTNt Ur. J ICATIION '* Ai-rborne Elaotronic Slghtin~ of Unknown Phenornenon Project, 10073 Lt" Ol.sson/.1os 1. ATIAA-5 requesta tl'\at. the inclosed incident of 24 Dec 52, Ft. 'llorth, To.~x3a, be reviewed and that, if possible, either an analysis or, if the to~al information is too inadequate, an opinion be given as to the oaus8 or this electronic sighting. 2. One positive transparency copy ot o-15 film picturing some of the phenomenon encountered b,y the B-'6 is also inclosed ' If inclosure 1 is wit.hdra'ifn (or not; at-tached} the classification of this correspondence will he downgraded to m:CLASSIF!ED in accordance ,n, t h paragraph 253, Propulsion Dranch r~L.,; ence Cent 9r lr.&l~ ..., :AT I YEAR INTERV.A , DECLAssiFIED AFTER 12 YEARS LS: UNCLASSIFIED DO I m-.. 96 ~-IIOIIMa.IOCf .. WIICMMAY ....... UMCt.ASS1F1ED t\Y?a, G .. ru INFORMAnON REPORT .J.. Object nJt seen visually. tfnancv?r the ,\t~/APG-ll rado.r '.T0'..41d '~ot>k 01 ( f\1i.1ction or t.l~c A?.\), and track the phe nomenon, nll available N~'~w. :rel then .rv11l d rllly ::Jt:!~roh ~ r~e srea ln front of t hr.: :1lrcraft in the dl!.cction .nd d Ln t~utce t.ndicat.cd by th~ At~/APG-41. i!othinf~ could ever be sc~n. ri1a Aif~.Ps-?..3 vnC!":'.I 'J!' ~:~ul~1 tncm r.o~r:~h t:1c ~pa~e in front of tha n-36, nr~d .1ould fll,;'J.:;: de :c.~.;t t ':l. :;J'l,~r.)nert:>n. Tho ::i~;nod st.ate~ent.:. c!' r.oth r adar O.'r:rn-4:.ors art; ;t.t.'l~r.H'l :1~; ind.or.u r:.! per od o!' approY.irr.~tely 30 r.luutcs. T~c eY.nct ti.I.1e ( CS T) sho~-1:-. on ~!1':: (hot.u.Jr1.~r.s rc: .. .'t-rcnced in ;Jara~raph 8 is 12:52: 39 to 12:53:07. 'ri:ese pho::.o.;ra)r.s .h~rc t.akcn o~ t.hc !.7:/AP'l-41 tndlcator " 5" and " C" ~copes durlnr, one ot' the periods whtm the A './APlr-41 !tad.ar s~t '/\as tracklr.g t.~f' phe:no::-,enon. . -3. Phen.llrtenon detectr;d b;, !'{:\dar set. s L!:Lilar to .~:;/A.PG-hl -.-1/ALO im:;t::.lled on nose or l -J6 ~ulpJi4ent i'lir.n:. to!.~ ai.r~ra.l.'t. Prwno:nt:no:: .Jas detected at !;:ll'le re~tive posit.ion by A.N/.t\PS-2). For de.scrlption o~ A:JAPC-l.l and !'~..T_O (t:-~99/f'~PG E'~o!..<in!la control) see TO No. CO A.71 16-JO.i.PG-41-J. 'l'LC t\:'/APG-!.:.1 lnulcator ~-ias cqu_ipped with an o-1$ camera which photor:;rac:-tcd the .. \ and c cco;)c3, a data ca=-d , a frbne cou.~ter, and a clock. The data cD.rd contains !JtX Jir::1ts, on~ inuir:.;:-.1~i.r:g ,,,ru..n ..... he r.a.dar set detects a tarGet. A.no~.:;.::r is energized i!hen Lhe r ?.da=-set loc~s on a tarr;et, and another is ene!"giz:cd HrKn t h e t'iiLcl".el r~o,,ic cr:; .E-ra i: tat.ing l) i c ::.ures The Hltchel camera was mounted on thtl no:Je tt:.rret, a!lCi ~oresightr.!d to t~o tra.ckine l.ina of the AU/APG-41 anten:!Cl. The turret is slaved t o the :1nter:::;:1 anti fo:~lm:s in azii:lUth and ele\ation. t~lthoup.h ~he li .::nt on t~c 0-15 f llrn imllca ::.cd t!-'a'!. the 7~itcpcl camera was running, ur.fort.unately the ~ iitch.el :i l m wa~ developed thrOli.[;h no l channel~ and the frames 'ti1-aich o,rcro taken at tho t.b:P. the ohencr1enon uas r:~ tracked ,.,ere rendered usel~::s by po.2_.r developing tcc::niques and :1othing dls.tinctl ve could be found on thf: fil.l'T!. - 4. PhenOlTlenon observed 40 F1iles East of Dallas, Texas, to UJ r,l.les ~:ortheast o! Dallas on both !!ortt and South headings at 40,COO ft., and on descent LO l5 ft. in the area surrounding Lake Dallas. Phoncnenon \;a:> no long~r detected below altitude of 1~ 000 ft. Phenonenon was tracked at di~t:!.:-tce of 2,008 t o 4,000 ya:-ds range appearing intemlttently at differcmt azimuth locations plus or ;n:!.n.l:J )0 and ninus SO to ninus 15 elevation. Although !tn inter.~i Ye visual search Has rr.ade phcnom~non H:lS not seen by the pilot or any crow menber. The phenomenon l-Ias present durine the period of time 'trhen the F-eu fj zht~rs were making simulated attacks against the B-.36. It ,1a~ detemined late:r that the inferior performance fran the A~!/APG-41 was obviously due, at least partially, t.o the sa.11e type of phenomenon that \-zas detected and +.racked for 30 ;1inutes after th9 fighters le!t the area to return t o their base ( Ser zstrorn .\FB). 'l'hc MI/APG-41 operator ~ siened statement ( In~l. 3) aud t.he M:lt~-23 operator's signed statEment (Incl. 4) gi.ve further details. 5. aotr. radar operators have been operatin~ and