1689 PROJT UNCLASSIFIEDAD DATE OF INPO 6 July 47 ATIC NO. LOCATION Clay Center, Kansas AF NO. SOURCE AF Pilot RPPORT HO. DATE IN TO ATIC 16 July 47 16 July 47 DATE OF REPORT COLOR very bright Estimiterx Estimater TIHE OF SIOFPING TTHE OF SIOFPING 1345est 210 mph 210 mph Measured SPEED RotiatJ RetimatJ SHAPE disc ! ALTITUDE 11,000' Masured 30' 50' dia 30' 50' dia LENGTH OF TIME OBSERVED SIZE COURSP E TYPE OF OBSERVATION from a/c NO. IN GROUP 1 MANEUVERS seem to accelerate to high speed Seemed to be flying a parellel course. SOUND Lisappeared when a/e turned into object. SKETCHES First observed "flash" low then noticed PhOTCO "disc" 1000' above a/c Calcecyion Tamporary ATIC Form 329 (2 Jan 52)
Incidont x89 - 100 mi. W of Kansas Gity, missouri -- 6 July 1947 There is no direct astronomical explanation for this incident. The striking feature of the ineident is that the "very bright" object travelled in the same direction and at the same speed as the obsorver did, and that it appeared at ll o'slock position at nis left, or approxinately opposite to the position of the sun at the time. It cannot be proved, of course, but it is probable that the witness saw a direct rerleotion of the sun on some con- that the witness saw a direet rerleotion of the sun on some con- tinuous object -- thin clouds, ice crystals, or the like, (Had the object appeared on his rignt, then this explanation would be untenaolo.) Its disappearance can be explained logically also, for turning altered the observer's angular relationuhip to the refleetor. It is further noted thut an apparent inconsistonoy exists in the report. The observer first stated that the object appeared to be the top of a water tank "low and to his left" after checking his position he stated that the objeet was at ll,000 feet. The inconsistency in altitude tnrows some suspicion on the observation. If the object was low, then a running rerlection along e river or railroad track would be a promising explanation.
CLASSIFI 10 Spaad 210 201 Dirdeer 15 0 7E 009 018 2 FA 2
UNCLASSIFIED (2i0) 1m
HEADQUARTERS AIR MATERIEL COMCIAND Wright-Patterson Air Force Ease Dayton, Ohio MCIAXO-3/ENS/rm Jan 5 1949 1 MCIAXO SUBJECT: ProJeot "SIGN" TO: Chief, Air Weather Service, Andrews Air Force Base, Washington 25, D. C. ATTW: DSS 2 1. Projeot "SIGN" is responsible for the colleotion, investi- gation and interpretation of data relative to sighting of unidontified flyirg objeots. Attached Inoident Susmaries 1 thru 172 from the files of Projeot "SIGN" are forwarded for study and recommendations as to whioh of the inoidents may be eliminated as balloons released on routine synoptio ascents by the Air Weather Servics, the Navy Aarological Servioe or the United States Weather Bureau. The summaries attached Sarvioe or the onitod Stataa Wsather bureau. iis sumries atcaoned way be retained in your headquarters for working and reference purpossa. 2. Yhe Air Weather Service is the only agonoy of its type that 2. Yhe Air Weather Service is the only agonoy of its type that has been asked to assist in the acoomplishment of Projeot "SiGn" except that the United States Meather Bureau has provided information on ball lightning. Research projeots in which balloons are used and whioh are lightning. Research projeots in whioh balloons are used and whioh are conduoted or sponsored by the Army, Navy or United States Air Force are oonduoted or sponsored by the Army, Navy or United States Air Force are checked by the Iatelligence Department of this Conmand. These cheoks mrausually made direct from the Project "SIGN" Office, MCIAkO-3. These mreusually made direct from the Project "SIGN" Office, MCIAkO-3. These wheoks are diatinot from the pheck of synoptic balloon flights made by wheoks are distinot from the oheck of synoptic balloon flights made by waather service stations of the Air Force, the Navy and the Departwent weather service stations of the Air Force, the Navy and the Departwent of Commerce. (U. S..Weather Bureau) requested of Air Weather Servioe. 3. It ls the opinion of this office. that the below listed inoi- dents are those having the greatest possibility of being balloons. This list does nos elimimate the possibility that many of the remaining incidenta are balloons. 6 24 50 91 213 155 m 25 52 92 115 156 28 72 96 126 157 11 30 73 104 113 159 1山 31 105 145 163 26 32 87 107.8,9 151 167 22 33 89 112(Sea122) 154 169 23 013 3-84481-A
Hq Ac, Chief, Air Weather Servioe, Washington 25, D. C. Subj: Projeot "SIGN" 4. The form used in interrogating witresses to sightings is inclosed as a matter of interest. Conment as to possible improvement of tha "Eseential Elements of Information" in regard to routine synoptio ballcon flights is invited. 5. It is requested that correspondence be forwarded to the Commanding Ganeral, Headquarters, Air Materiel Conmand, attention MCIAXO-3. FOR THE COLDIANDING CENERAL: 2 Inolas for H. M. MOCOY Summaries 1-172 ingl Colonel, USAF SEI Chief, Intelligence Dept Copios furnisheds AFOIR, Hq, USAF Capt Trakowski, Geophysios Lab Capt Trakowski, Ceophysios Lab Major Kodia, MCHEEP Major Kodia, MREEP Colonl Noal, ICLANS Colonel Noal, CLANS P-2LLS1-A
Dr HYNEK'S EVALUATIONS EXTRACTED FROM PROJECT GRUDGE REPORT. INCILENT INDEX 1. Astronomical a。 Eigh probability: 26，27，30，31，32，33，34，48，49，59，60，66，69，70，94， 95,96,97,98,101,102,103,104,116,119,132,136,140, 147,148,158,174,184,185,187,197。203,204,208,216, 219,238. b. fair or low probability: 19，20，23，24。28，35，35，46，50，63，67。80。82。93，100， 112,120,121,129,130,144,153,165,166,167,175,192, 199,202，205，220，230，240. 2. Non-astrononical but suggestive of other explanations B.0 A.. Balloons or ordinary airoraft: Balloons or ordinary airoraft: #3,11,22,41,42,53,54,73,81,83,91,92,113,114,115, #3。11,22,41,42,53,54,73,81,83,91,92,113,114,115, 126,131,138,141,145,155,156,157,159,160,161,163. 126,131,138,141,145,155,156,157,159,160,161,163, 169,171,173,178,180,182,188,190,194,195,196,198, 169,171,173,178,180,182,188,190,194,195,196,198, 200，201,209,210,217,222,235,237,239. 200，201，209,210，217,222，235,237，239. b. Rookets, flares or falling bodies: b Rookets, flares or falling bodies: #4，5，6，7，8，9，12，13，14，15，16，25，56。65,78，106，107， #4，5，6,7，8，9，12，13，14，15，16，25，56。65，78，106，107， 108,109，133，170,211,218. 108,109,133，170,211,218. 0. Miscellaneous (reflections, auroral streamers, birds, eto.): Misoallaneouz hindzote). 39,89,123,124,128,146,164,181,189,214,221,231,234. 3. Non-astronomioal, with no explanation evident 9 Lack of avidence preoludes explanation: #38,44,45,47，55,57,72,86，87,88，90,99，110，117，118。 125, 127, 137, 139, 149, 150, 177, 179, 191, 206, 212, 213, 229,232,233. ba Evidence offered suggests no explanation: 1, 2,10, 17, 21, 25,37,40,61,62, 58,61,62,64,88, 71, 75,76,77,79,84,105,111,122,135,151,152,154,162, 168,172,176,183,186,193,207,215,223,224,225,226, 227,236,241,242,243,244,134。