CIA PDF RELEASE 2026-07-10 INC. 1955 ⚠ REDACTED ⌥ 787 WORDS OCR

CIA-UAP-D021, Analysis of Unconventional Aircraft Sightings, 1955

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CIA-UAP-D021 is a Top Secret memorandum dated 1955, produced by the CIA's Assistant Director for Scientific Intelligence, Herbert Scoville Jr., and addressed to the Director of Central Intelligence. It analyzes reports of two lights observed rising vertically and passing over a train near Prague, referenced in a companion document, CIA-UAP-D020. Section 1 and 2 assess an interview with one of four witnesses, identified as "Mr. Elron," concluding his testimony alone is insufficient to confirm an unconventional aircraft given poor observing conditions, high altitude, and probable suggestion bias from a Senator Russell who had reportedly declared he saw a flying saucer. Section 3 cites the 1953 Robertson Panel conclusion that nearly all U.S. sightings posed no security threat. Section 4 describes Project "Y," a joint U.S.-Canadian program at Avro Aircraft Ltd. led by John Frost, developing saucer-shaped aircraft with projected ceilings of 100,000 feet and speeds of 1,500 mph.

The document is notable for linking contemporary UAP sightings to a known aerospace development program and for the explicit skepticism applied to witness testimony. The reference to Senator Russell situates the Prague incident within a politically sensitive context. Witness names beyond "Mr. Elron" and details from the Prague dispatch remain obscured by OCR degradation. The recommendation for further interrogation of the remaining three witnesses suggests follow-on reporting exists but has not been confirmed released.

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Redactions present in this record. Black bars protect identities of eyewitnesses, locations of facilities, or non-UAP-related sensitive material.

Sections 1 and 2 of this memorandum document a 1955 analysis of reports of “flying saucers” or “unconventional aircraft,” referencing the incident described in observer debriefings contained within CIA-UAP-D020. The memo summarizes the incident as consisting of two lights rising vertically, then passing above the observers. The memo contains caveating language that suggests the author concluded that the reports, as described, did not indicate the presence of an “unconventional aircraft.” Section 3 cites a previous finding by Dr. [Howard] Robertson (of the 1953 Robertson Panel) that “almost all the sightings […] represented no threat to the U.S.” Section 4 discusses the state of then-current research into “saucer-like aircraft” under Project “Y,” a contemporary joint U.S.-Canadian aerospace development program.

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TOP SECRET Approved for Release 2026 SIGNATURE RECORD AND COVER SHEET DOCUMENT DESCRIPTION SOURCH 19 C9- 1955 ASO - 49 6 ст REGISTRY CIA CONTROL NO. 11 5 гг вя DATE DOCUMENT RECEIVED DOC. NO. DOC. DATE 1. COPY NO. NUMBER OF PAGES NUMBER OF ATTACHMENTS 33 LOGGED BY HB This form will be placed on top ligence Agency or classified Top Secret within the CIA is downgraded, destroyed, transmitted outside of CIA. individuals whose official duties and/or release the attached Top Secret material columns provided. Each individual each Top Secret document received by remain attached to the document until such Top Secret matter is limited to the Top Secret document will sign and indicate the date of handling in the REFERRED TO OFFICE RECEIVED RELEASED TIME DA TE SEEN BY TIME SIGNATURE AND OFFICE DATE 0S/ soct 55 1150 180г 1i2s 12,50 IDEA Get 73 . 190 t 5x 19 let 5'5 1900T 55 28 ast ro 86m/33 × 30887 ApR 34 du 70 NOTICE OF DETACHMENT: When this form is detached from spaces below and transmitted to Central Top sachet Control Secret material it shall be completed in the appropriate for record. DOWNGRADED DESTROYED DISPATCHED (OUTSIDE CIA) TO BY (Signature) TO BY (Signature) WITNESSED BY (Signature) BY ( Signature) DATE DATE OFFICE DATE FORM NO. 26 1 APR 55 USE PREVIOUS EDITIONS. TOP SECRET (40 )

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VE/URANNA FOR: DirectOr of Castral Intellerace SUDHOT ¿ Flying Baucers or lnconventional Mireraft A dispatch fron Prague, c-103, dated 13 October 1055, reported the sighting of teo flying soucere or diac-lthe unconventional aircraft. An Interview with Me. EIron, one of the four obnervers of there alrerurt, tallos to confira in several respecte the inforation siven in tho dispatch. His observationa vre Linttad to sightine, two lights which Initially arcae vertically and then approached the train and poosed over bond at i high altitude. Se failed to obsarve the body of the object and had no feellag as to shether 1t mas rous, disc-llke or eves square. Nis only reson for describing in unconventional usture to the object nas that it rose vertically and appested to glide 1a a manner unlike any airerart he bad prevlously seen. However, n rev of the rect that it was dunk, that be thought ti ircraft quite high (9000 feet) and that his obscrvation vere undoubtedly cooditioned by serator hussell's reucks that be hud seen a flying asuber, too much confidence camot be givea to his observation. The fact that so polke usa heard asy also have talluced his opinion on the unconventional characteristie of the object. Do also fulled to confirm the exelterut of the train official tolloving the incident. It is my ballet that SEron's testinody alone could not confies the existence of uny untentionel aircrait. Fovever, he was not in s position to have as good a look as vere the other menbers of the party. A tery careru interrogation of the otber nenbars is in order. 3. To years sep, DX. Robertoon hended a group which investigated U.l. sightings of tying saucero. Thie grOup vas ablo to explain almont all the aightings und reached the conclusion that these phencheos represented so throat to the security of the U.3. Even 1f the present alettings

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- sart: lying incers ce Jaconvent lonal Aireraft la fusais are sontimed, it abould sot be sommes that these snoouvent lonal airerett hare actually been flyias arout the U,5, nad vere the souce cr J.5, publse apeeutailos. H. The USAF la supportine & Project "y" at Avro Airerait ltd, la Canda Tor tie developetat al merveilonel saucer-like aireraft, Honever, thia developont is stilli 1u tbe carly staturch and devalopent rtages with three or sore jeurs beine reguired befara ton protuction of a firat prototyya. II the developeut proves out succesatal, the calmilationa indiesta thes meh en atrerart sight bara a very high collise (up to 100,000 rent) with spence la to 1500 ALLOS DAR LONI, à MINgO DI TOO nileR sad JEtE or C110 ol 120,000 fest & munite. wuld, of course, be extremaly valenble. Project Y 1e being directal by Joha Frost. N°. Prest la reported to have Bottou his original idea for the flying schlas fros a proup or Germana just arter lorld Sar II. Tue Sortets asy also bava obtained tarantion Prom this Denin frong. (Il 11 mussentet that yoa est General Samford to report on the progress of the AiT force project at the IAC sont ing-) USABERT SCOVILLE, Ji. maistant Director cdentifle Intelligence ec: DD/I DISTRIBUTION arig & 1 - fai 1 - DD/I 2 - AD/SI 2 - ASD/SI -2- 7:.;:. 1.

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