PROJECT 10073 RECORD CARD :z. LOCA TIOH CONCLUSIONS Was Balloon 0 Probably Balloon 3. DATETIM! GROUP TYPE OF OBSERVATION Possibly Balloon XX Ground Visual 0 GroundRodar Was Aircroh 0 Probably Aircrolt GMT 23Ll630Z 0 AI,. VI auol 0 Air-Intercept Radar Possibly Aircraft 0 Was Astronomical 0 Probably Astronomical Possibly Astronomical LENGTH OP OIS!RVATIOH HUMBER 01' OBJECTS 0 Insufficient Data for Evaluation 10. BRI!P SUMMARY OP liGHTING shaped like toy top. Jlad Possible balloon observation. rudder underneath. ATJC PORM 329 (REV 26 SBP 52) AF FORM 112-PART II APPROVED I JUNE 1941 AIR INTELLIGENCE INFORMATION REPORT F~ight . 3..JI HO. Jb-UFOB-9-55 Part T\'lo TT MSQ. GPCY.t 2968 .FM CCMDR 82ND FTR OP DE:F .NCCA WIIM DEL DE. RJEPNY ll . . FM CCII1DR 2(.(rH :AIRDIVDEl ROSLIN AFS NY T 0 RJEPNB/DIR INJ:EL FA Dr STE.Wf\RT. AFB . NY . . . .:. . . . RJEPNB/!IQ 46o2ND AISS lADB' STI!:iTART. -AFB NY . . . FM OOIDR -82ND Fl'R OP DEB' NCcA WIW DEL o~ To RJEDEN/CCJ;1DR AOO ENr 1\FB OOLORADO SPRINGS COLORADO RJEPNY/COv\m 26TH AIR Dtv rnr.r RQSLYN ~s NI . I RJEDWP/CQ,1DR AIRTECH Ir.trEL C.EN WPAFB OHIO , . RJEPHQ/COADR DIR OF ItiCF.t ll(J USAF WASHDC I ... /UNCIASSIFD:D/ OPar 29n~, H~PCr CF UFCB /J./ DESCB.IPl'ION .CF OBJEG'.ra . B SIZE OF Ec\S~LL F RUDD'f'R UNDERN!ATH WJ!G'r }ir DESCRIPl'ION CF COURSE Ol!' CBJJ!Xl1. . A LIOHr AIRCRAF'l! (PIPEI\ GUB) . F THREE /3/ TO FIVE /5/ MINUTES /3/ t/1\ti!'TER CF OBSERVt\Timf: A G~OIDID-.VISU\L .. B BINOCUIAns . . . /1./'ril.lF. AND n\TE OF SIGHriHO: A 1230 EDsr /5/ LOCf\..TimT CF OBS'ffi~R: A n;) r:r~ 5 Lfm~\PE rA. P1\ nourE l00-52 /6/ IDFlfJ.'FYit:G Il!FORi:tt\TION W ALL OBSERVFRS fiS. DOffi'H!'.\ lULI.Jm C!\m'Y, fLGE 33, 11'"'\ILU:G ADDRESS \'/FST CllfSTER PA. HOUSE'.'IIFE AIR INTELLIGENCE INFORMATION REPORT i ~tiooRTIIO. JH -UFOB-9-55 Part Three Flif.':ht J-H, l~60?.d AISS COMl>fENTS of Prena.rinr, Officer: P-R-0-B-A-B-L-E 1. In the ooinion of the Preoaring Officer, the UFOB sighting reporte~ by-the observer at '!{est Ch.~.~.t.er, P~lll'!.3ylvan1.a at 2J/16)0Z Seo 55 wae 9robably the result of ala~m upon seeinr, a raaonde weather balloon caught in a fluotu- ,... ating current of air. a, The aonearance of the UFOB from the observer's descriotion and : .memory eke tch seemed to bear a s tronp.: resemblance to a radiosonde weather b. The wind d11ta collected fron1 the Greater Pittsburg Air9ort seem to extend the noesibtlity or there having been a radiosonde balloon in the vicinity of Weet Chftetftr, ?ennAylvania at the aooroximate time of the sighting, providing thftre wae a l~akap,ft in the ballcon which was released at 0400 EST o. The fao t that th~ object 'lla~ no.t T>icked uo on radar in the vicinity suggests that it 9 n o t fL m~tal object as believed by thn observer. d.-The ne~r r:o! nc ldence in time that t he Swarthmore balloon was re- leased and the ohan 1(1ur, 1dndn whlch it encountered during ita assent doea not '9reolude the oouiblllt.v of lts havine; drifted t oward the vicinity of West Chester at the a~9roxlmut.., t.Lme tha t tho UFOD wa s sighted The abseno111 of nnund uasocintncl wit.h t he rbject se~ml! to negate the chan~ of ita havinR bn~n aelf-nrooellod, simultaneously increasing the chance that it was ~robably a friendly obj~ct. COMMENTS of Approving Officer: Concur lrl.th the opinion of probably caused by a radiosonde CHESTER B. HANSON Captain, USAF Officer in Charge the Preparing Officer that this s type l-Teather ba:loon. ghting was Furt '1'\:o r li.GF. THtlf.E R.E?lJL )~i\. /7/ \,',\'ffll=R i\tm \UHDS ALU!~l' B Il.G 2500 SCD, 4000 SCD, lOCOO DY.ll, 25000 I!DI 15 UILE VIS 1 \'ill-IDS C PilL />000 oosr, VIS 8 RW--'/IINDS SE 9 soooo ll4'-.. /S/ NEC'ATIVE' / 9/ NECt\TIVE RF.PORT FR04 CGI Sfl\.TIONS /10/ OUE AIRLINER UlfKtWriN JDEm' IFICATION /11/ GROUP OPEMTIONS CF~'IGElt r32.tfD FTR GROUP, AIR DEFENSE. NO c a. .unrr /12/ NEGl\TIVE 2.3/2ll2Z SEP RJEPNL CHEsrER B .' .HANSON captain, u~ ICIHE: THIS OOCUMEN r CONr A.,I'> INfORMATION AFFECTING TilE NATIONAL CEFENSE OF THE UNITED STATES WITHIN THE MEANING OF THE ESf'IONAt>E A r . " I U. S. C.- 31 AND~. AS AM EliDED II:; TRAII$MI ION OR THE REV!::LATION OF ITS CONTENTS IN ANY MAN tiER TO AN Utii\UTHORIZ!:O PERSON 1$ f'ilOIIII'II fl I OY LA \'I. IT ~.11\Y IIU r m .. flEP::vLi\:C0 IN \\HOL.E OR IN PART, llY OTHER THAN UtHTEO STATES AIR FORCE AGCNCIES, EXCEPT OY PEmIISS I) tl OF Tltt: I"II<C.;TO!l OF EJ i)I:JP/ C0::Di1 :d,1T::.c :r Ii:T::L C~:t: UPAFB CHIC CF :O:AS::::E/\LL lll~.::sc:.::I?TICt. CF c:-:CUi.D- V I SUI'.L r' t't.G"-r-v- /~/ ;::GATIVZ ~:::?CRT FRGt. CGI STATIC1~S /ll/ GRCU? C;J;::'RATIOl'S GFFIC.~R, 32 i'D FIG;n~:~ GRCUP, i\IR DZFZNSZ. AF FORM 112-PART I ~PI'ItOVIO I JUHI 11141 (C:USSI,.CATIOM) 'AIR .. INTELLIGENCE iNFORMATION. REPO.RT ::. .: . . \lEST CHIJ:STER,. PA . o o I o o o Sept SSJ Conversation between 1-.iaj. Thro.sherand Lt.Derrier, SUMMAkY1 (lnll4r Hllflff ,.IIIIIICtf ll{rfiN&. OIH ,.,.1,/lltiWIIIIt /IIIII 01ttoftfllf!lit ,_,.,a,,, LUC lr~tfor.rtt ollovff lt/1. Btlbt lm 0/ ,.,_,. O;ft A' /'WM Ill-:'arl //.) . .. PAR'l' O!lE: . n'escripti~n.' of 'si8htirig' by' Hrs. , . .' Lenape Road,. nFD#S ,.. \le~t Chester I rennsyl.vania. (u"IL.J PAnT TWO a\ Supp~Clmentart Inv<,.:$t.i'ge.~ive .Efforts . .. II. stn tAUYz An uu~dontif'ied .f'l.yirie objoct was reported to tho Operations Oi'.t'icer on duty He Cantle . '(OeoHo.r GJQK 251~0) oho:&:tly n.f't.Jr its sis}lting by 1-'lre. at 2.3/16JO Sopt0l4lbor 1955 nc.:Ll' \verlt Chester Pennsylvania. Tha .t.-nlloHl.nu roport is the result of an iJ:rl:.crvioJ wich t llo nbovu- . mentioned observor Rntl VlH'ious other agencioa in the vicinity of' the riir;htinu \'lhoso asaistanoo was souaht:. J.n det.ormining tha probable causo o'f' tho tlight:J.nt.;. III. ItlVESTIGAWllJ 2/Lt Charles L. Borrior, AO ,3019014 (Soo individu<ll parts) . CIIS!JT.:.::U b1 .!lAUSON . APPR:>'VitDt JOtal H HHIT E JR Colonel, USAF Corrmander D/I, USAFJ Comdr, ATIC; D/I, 26 ADiv; Comdr, 4602d AISS; OIC AIR INTELLIGENCE INFORMATION REPORT FROM (Aptnc,) IIEI'O"T NO. .3-H-U .l"OB-9-5 5 .Flight .3-H, 4602d AISS SOURCE: Hrs. GeoRe.f: GJQK 2557 . Ocoupaliion: , Education f College Qualifications: .20/15 .v.:L~ion, Jncorr.ected RELIABU.I'rY: GoOd. .SOURCE was c t~cteJ persorullly. o o o o o t o I III~ SOURCE'S DESClUPTION OF -SIGH~G: ~OUR stated that on 2.3 September 1955 at l2:30.EDST a sound aindla.r to the sputtering of a light plane's engine drew her attentionto tho skyo SOUUCE dashed around to.the a de of her house in order to scan the horizon but 'Has unablo t.o nee the aj rcraft. She I began scanning the slcy suddenly f!he noticed t.h a appa:uance of ~ strange flY-l.ng object, oval-shaped and char- coal. gray in color mov:ing ucro~s the sky. . . . . SOURCE watullo<l the object perfonn a oo ter.:..Cloclcwise rotational ~ovemon which. continued as. the ohJ<"d, moved away and out ot' i:ght. The time of. sichting \-las between :two and!.five r.d tllll'.f~s. I-ts course seemed to e . due uest. . .SOURCE o01ll.tl tllscern no sound being c ted by the UFOB during tho time she observed it, even t.hough it was the sputtering sound ithich had first drmm her attention to the sky. .l>url.ng the UFOD sighting an tm.:!-dentified air]jner, flyillB lou at what SOURCE estimated to have been 1 000 ft.' flew below and to the right of tho In addition to the oval-like cohfieu,rc;Lti'on of tho U i'()~ already noted, SOURCE described that afte r she had dashed inside; to eet a ~t of 7 x 50 binocul.:Lr:J, she uas able to diotinguish a smal 1 blister oh the ventral ce'lte r of the object a s \'Tell as a circular object j ust off the right 'side of the UFOI3. ~ iUfiCE l'tas ccrtai..'1. that tho s mall cr object '\'la s movine independent of the larger ox;w. SOURCE described the UFODts physical 'o.ppcarancc to tave resembled tho cover of an aJHcator sldn purse uith slichtly irreGUlar protrusi ms visablc. The condition of tho s!cy-lras ovcrca::.t \lith an appro :ir:utc 3500' ccili:1c. !!o pllotocraphs i':cre tcl(cn of the .UFOB. HOTE: THIS DOCUMENT CONTAI NS INFORMATION AFFECTING THE NATIONAL DEFENSE OF THE UNITED STATES WITHIN T HE MEANING OF THE ESPIONAGE ACT. 50 U. S. C- 31 AND 3Z, 1\5 AMENDEO ITS TRANSMISSION OR T HE REVELATION OF ITS CONTENTS I N ANY MANNER TO AN lJNAUTHOR11EO PER!';ON IS PROHIAITFO RY ' Af fORM 112-PART II APPROVED 1 JUNE 1941 AIR INTELLIGENCE INFORMATION REPORT Pl!OM (AifttCf) F. light 3-H 46o2d A ISS .SUPPI..!MENrARI INVEsriGATIVE l'FP'CRl'sa 3H-tiFOJ3-9-55 Part Two .. \ 1. The ottice: on dut~ .. at the Ne1! Castle, Dela llclre; C cn.inty Airport Weather . t Stati'on (OeoRet OJQK 2640) 1'81 contacted and turnished th& tollOtting intoi'Uation. Hie station release ~eillng 'talloone at .irregular intervals. lnr~ted, this type: ot tal- loon meaaurea approxi118tel7 18" in diameter, is trail and us\ally bursts before reach- ing 5,000 rt . No l:alloons bad been launolied on 23 Septc.Dber, bO'Ifever, on the.24th ~eve~Sl ceUing l:alloona were released at one hour intervale throughout the ch;r. and liould have tloated in the direction at Weat Chester, Penns)'1van1a.\ The latter report, how8'1er, o.ftered no conti111e.tion on the eighting ot a UFCB on 23 September. . . 2. The US Weath~r Bureau at Philadelphia Interrational Airport. (OeoRet GJQK 4653) 11111 telephoned and queried about 'talloon releases an\23 September. The forecaste~ on dut7 stated that no lallooria had been 'released by them o~ the 23rd or. September. This agency referred the AISS investigator to the field unit which aupplJS them with til~ weather data, this "elng the 24th AA Gp. \_. \ 3. A cheolc with ll<tll BAtt, 24th M Gp located at Swarthmore, Fa., (GeoRet GJ~ revealed tlat their nolil&l dch edule for releasing radiosonde l:alloons is 1000 EI1r, F.Dr, 2000 EUr, arad ~/tf)(l Eur a nd this schedule 1'1Bs adhered to on the 23rd Septem- ber, ~id:tb\..the-;exceptionocir~t.hf)~ ILOOO~Utt:~relbase blcb li$!J~D'Qde at 1016 EDr. The ba