lfPEllUil rl I. DrSCRIPTION OF INCIDE~'T On the nicht or 24 ~cbrunry 19~2, at 2315 local Korean tL~e, the na'll- gator or a B-29 observed an unidentitied a erial object. The B-29 ~as pic up b7 scarchl1fhts and nbout 45 seconds later tho navlntor niehted ail otject approaching troa 7 o'clock. The object wns ~stimutec to b e over L~tung at this tiNe. The object appeared to be cylinclricul in sl:a!)C end hoi! a r a riCJ.y pulnntine gaf;eous type or exhaust trail. Tho e:v..ha u s t trail wa s appro;d.~ . ..!lt.cly three times the length or the object with both tho te.il blnst and the o~!ect bld.sh in color. \-Jhen first ol)s crvcd the object appoarc:d to l:e cli:.:::inr, nt 45 : l<o\r~.cr it leveled off approx i mately 4 000 ft. fror.t the B-29 a:.:! turn(;d to.:ard t B-~9 os if tnkinc u p an interception course . 1be ob j ect continu~d to cl e on the B-29 at high velocity for npproxiu~tcly 15 s econcls after vhich ti=e it broke orr level night and beaded down, passing under the 13-29 at a era~ual nnele. ~ the ob j ect began t~ de~cend t he fla=e diLunished in size and eot brlehter. ~be navigator estimated that the obj ect ce.r.te within 3CJO tt. ot the aircraft and i t appeared to be the size of an automoLi l e (Assuncd to n ean the same size as an autoznobile vie wed frorn 3 The B-.29 vas fiyine at 22,000 ft. ttJ ti tudP-en d at a spee d of ~0 kl:!:>ts. The searchlights stayed vith the aircraft for approximately f our ~tes am veak inaccurate flak \lt\S encountered durine t.~e entire incident .. Weak electronic sienals were picked up by the electronic c ounter- measures operator for a short time. II. STATUS 0? ItmSTIGATIO~l Y~re details on the sighting have been requ~sted fron F& Sinc e t~s object resembles a surface-to-sir guided missile the incident has been re- texred to the ATIC guided missiles group DOWN GRAD:8D A'"r 3 Y f.j:\1\ nn'ERV/~ .- DECLASSIFIED AF~J.'i:R 12 YEARS Ul~cflsslFIEQ F.ZFI:::~S TO CYLINDRICAl. C}'JECT \ilTH BLUI~H mA:::L TR,\ 'JELLING AT HIG!t SPESD S IGHT:i:D 'uY iJ- 2:) OVEH l~OR~A. SINCE CG ANC IS ONE CF f\DD~ES3Zf~5, f..SSlii1E YOU Gt OBT4\ NCOPY. C1 f,DVISf.. AND HE \JI LL FU:Cl NISH YOU \1ITH EXTRt-\CT. r:nD CSA.P ITEM Tokyo, Japan JOINT MESSAGEFORM ' StCUiUT'I' ClASSoriC.\TI:'JN ! ... : 1 PRECt::DENCE D nooK i-ltSSAGE D f,IIJLTIM.! A DORES3 INF(,W 'oli\ T 10~ uontl..'"l.e D Oi>.IGINAL :.~(SS~GE CFlYPTOr':' EC \ UTION Rl FERS TO Ml:.'iSAC.E: lflFO: Director of J.ntalllg ence Washington 25 ne.rerence your message A2671 elated 262J35Z Feb 52. r.eaues!:; that rcsul ts of rointerroeatlon of crew bo on~arded in moa li expedious u anner as nore <letails are needed to ovtlluate-incident. ~llmlnarJ nnalys 1;~ indlca~s t b:t t.)bJdc ~ t,.J.'f 'til a :;ubsc~rlc.: :~u,l\l~u-tc-;.,.lr ORAF1 C:R'S t iAME (11n!l ligM,I'Tt, 111/ltll rttulr"") nU.:.\SihG OffiCER'~ SIGr-.ATUHE I,t. E . J. Ruppelt/peg ATJ'.A.A-2a Ri':rt.ACFS liME fOR~ 17!, I """ Cl. WHICH MAY 81! liSE~ OfFICIAL TITLE . Al9l.I-A UNCLASSif J=:D: dated 26 Fabra.ar.r 1952 on Jdebt ot 2lr FebruaJ7 . Basad oa pert ox-aanc deduced !ro .the npo~:tcd in.i'o'I"'I&Uon, objae~ appears a nb8oni.e mrlace-to .air" gn:lc!~d possih17 ot the Germazt Schll8t.terl1JJgt7Pt. Currant estimates the So+iew with the c:apabiliq ot' haYing m operational surfacs-.to-- air 1Qida4 ~salle of this type acw al t.bougn until thJ.a t..i llfl there thu .. a capabt 1J.t7.- .l on which to crsdi t. tbe Soviata wi tb co.plete rn.luatioo or UNClASStFIEO AF fORM 1i2~ARt I A,_,.POVE.O I JU,.. l)ff AIR INTELLIGENCE INFORMATION REPOR I prma.u """ lk .. ~ applatoflk l SUM .. MY: (~ ~M ,. _,of ,,ac. OiH '""'~-I jliMl oou .. """"*' perll#fept.. L"' m:t.,., , Gli.Jtur l t{t . Btf'A tut of rtpert a.. A F Fur.,. llf-l"'rrC /1.) A navi;~tor on a E-29 la.f~t drop rd.3!li on l'l o-vn on t h , nie;;ht ol' /.3 Fnb ::1out.;,.~..1~1t ot Sinuiju obs~trvd a gro'.md to air rccket with flight guidin,g charact.~ri.Jt.ic3. UNCLASS1ElEQ, AP?aOV ::!>: ;m:.r.r:!ll B. UElt'=till,. JR. ( !.t. Col., US:\F D~?lty for Int.t lllgnc.- o. UITCft::U Captain, USA Interrogating Officr UNCLASSlFlEQ , Or~i.nal -~:\P .. G'fl; THI'i OOCU.,.t.NT CONTAINS IN,OR .. ATION AffECTING THl NATIONAL DEFO.SE Of THE UNITED 5T4TCS WITHIN THE MF.ANI~Ci Or THE E:Sl'IOSAGE ACT. 50 U. S C.- JI ANU lZ. AS A .. ~ND0 ITS TRANSfo41SSION OR TH RlVLATION Of ITS CONTENT'S IN ANY lo4AN:otER TO AN UNAUTHORIZED p(R$('N IS PPOHIIIIT0 BY LAW. IT MAY NOT Ill .,JIROOUCl0 IN WMOL Oil IN P'AWT, IY OTHER TH.\N UNIT!O STATD AIR FORC AGENCIES. EXCEPT BY PER~ISSION Of' THE DIRf.CTOR Of INTEU.IGL~E. USN', AIR it I fELLIGENCE IN:=c:~; ... tc\TIOi'l tioc 1,..') lntr.rc~nt, ~ft at P. prndjr~l,~c.l fviltto 'l'r.n O~)Jnet co~:t.::_,,l n ' to ,,tl ~nt,..r~".>t.:i.(ll :;:.>irt on l r!Vr>1 \ii.t!l deft for ~Lout 1. t~il dir:uni.h~d j_op'l.dly i n nl z"' <LC1d b"'c-~;.., lHi;~hl .... r in ~olor.., 'fh:.; '~'.ic.d.'' \ ;1j1~ r~lL.:)l~ nnd r~tionalo Jepttty 1..'or Int~llie,..nco ti',tt, 'lA,, t \J .>C ,IlC ITF.l1 ''~ FRO:J ATIAA-2C/ LT t. J. RUPPF.LT TO,AFOlNV/iCB CAfXAIN FOURNF.r t nr;rnr.NcF. Is MADF. TO voun ITnJS 'NFOR nnATIOf'r' IN :L'f.LF.CON OF 27 /FF.B '1. ATIC liAS lllllFS ON DOTif liORN\t lVI V II~CIDF.N't OF 24 FF.D AND IRI\NIAl-: IHC :LDFJ~l' OF 1 ~ FF.B. i I~OnF..'\N lNCIDF.NT ,'HilS BEEN TUnNFJ> OVF.R TO AI1C GUIDED t2ISSlLF.S GROUP_, DUi t-:o F.VIlLUAAIO~I J(.'lS/ BFEN t1ADF. 1.3 Yr.:r. llFSCRif>l'-ION IRANIAN INCIDENt INDICI\TrD ~;.;5: POSS!DILI'i:Y ~F A Nt:rron, ALiiJOUGU llll~'OllNAT I O~l U f. S J lrEl'CliY . DOWNGRADED AT 3 YJMR lN''i~RV ALS: 1 ).1_ I DECI,A.SSIFIED AFl'ER 12 YEARS.