PROJECT 10073 RECORD CARD 2. LOCATION 12. CONCLUSIONS 0 Was Balloon 3. DATETIME CROUP Thurmon~ Colorado 4. TYPE OF OSSERVATION a Probably Balloon - ---0 Possi l.lly Balloon 0 Ground Visual 0 Ground-Radar : ~ GMT 12/0106Z ~Air-Visuol 0 Airlntereept Radar Was Ai reraft Probably Aircraft Possibly Aircraft Wos A stronomical Prabobl y Astronontical Possibly Astronomical 7. LENGTH OP OBSERVATION Civilian (Commercial 8. NUMBER OF OBJECTS 9. COURSE 0 In sufficient Data for Evaluation ---=l::..!lnknown one 10. BRIEP SUMMARY OF SIGHTING Aircraft of unidentified type obser- ved by Am9rican Air Lines pilot flying 20,000 feet over the Sange de Cristo range. There were no vapor trails or other distinguishing characteristics observed which might assist in the positive identification of this parti- cular a/c type. ATIC F"O R M 329 (REV 26 SEP 52) 11. COMMENTS Immediate identification of aU6bject observe d by commercial pilot as b eing a type of uncec ognized a/c precludes investi- gation on basis of sighting bejng a UFO. Due to scattered cloud conditions at all altitudes & limited visibility it is.highl) possible that under better con- ditions this experience d pilot could have b etter determined tlte exact t v ne a/c. No Inveso UFOS INDEX CARD 2. LOCATION 0 Ground-Visual Air-Visual 5. PH.PTOS F SUMMARY OF SIGHTING .. \ircx:att or unidentified type oh~Mrvod b7 American Air pilot fiying at 20,000 tt. over the Sange de Qtisto r&noCP8 There were no vapor trails or other distinguishing o teriatics observed which mijbt assist in the poaitift tin.cation of this AlSOP Form 5 (15 Oct 54) 0 Ground-Radar D Air-Intercept Radar 112. CONCLUSIONS q..,. Was Aircraft tlA Probably Airc r aft 0 Possibl y Aircraft 0 Was Astronomi c a l 0 Probably A strono mical 0 Possibly Astronomica l 0 Insufficient Data for Evaluat ion Innediate ident1!1cation of object ob- S4r'led by cormnercia:L airlinea pilot as being a type of unrecognized aj rcra.f'~ udes investigation on the basis of this sighting being a UFOB. Due to scatt.red cloud conditions at all al- titudes and l1mited visibility it is bigttq possible that under Petter con- di tiona this e~erienced pilot co1tl,d hav. determined the e:xact. typ of tbis ai rcrart. No investigation authoriM<l.