DOW-UAP-D163, Informe de Información de Inteligencia Aérea, Suecia, 1953
Datos del expediente
- ID oficial del expediente
- DOW-UAP-D163
- Tipo de documento
- Documento
- Agencia
- Department of War
- Publicado en
- R07 · 2026-10-23
- Fecha del incidente
- 12/17/53
- Lugar del incidente
- Suecia
- Coordenadas
- 59.6749712, 14.5208584
- Páginas legibles
- 3/3
- VIRIN
- 260508-D-D0360-1155
Descripción oficial
Este AIIR registra un incidente ocurrido el 17 de diciembre de 1953 cerca de Hässleholm, Suecia, traducido de una nota de prensa local. A las 14:37, el piloto jefe de Transair, capitán Ulf Christiernsson, y el jefe de tripulación Olle Johansson informaron haber observado un objeto que se acercaba a su DC-3 en dirección contraria, unos 600 metros (1.969 pies) por debajo de su aeronave, que volaba a unos 2.150 metros (7.054 pies). La tripulación describió un «objeto metálico brillante, esférico y elíptico» y estimó su velocidad en aproximadamente la del sonido. Christiernsson describió el objeto como marcadamente metálico, casi redondo y ligeramente elíptico. Informó que permaneció visible entre seis y siete segundos, que no produjo escape ni estela de condensación visibles y que al principio le pareció un avión a reacción o posiblemente un «robot» no tripulado. Según el informe, el Estado Mayor de Defensa sueco no identificó ninguna aeronave sueca en la zona en ese momento y afirmó que examinaría posibles observaciones de radar. El informe también incluye una breve semblanza de Christiernsson basada en el relato de un contacto personal, que lo calificó de «muy poco confiable», y señala que las autoridades suecas habían abierto una investigación sobre el incidente. Todo el lenguaje descriptivo y estimativo contenido en este informe refleja la interpretación subjetiva del observador en el momento del evento. Dichas caracterizaciones no deben interpretarse como una indicación concluyente de la presencia o ausencia de características intrínsecas del objeto o de su desempeño.
Sobre este tipo de documento
Este documento es un Informe de Información de Inteligencia Aérea (AIIR), un formulario estandarizado de la Fuerza Aérea de EE. UU. que se usaba para registrar información en bruto de posible valor de inteligencia para su análisis posterior. El formulario fue uno de los principales medios de recolección de inteligencia de campo de la Fuerza Aérea de EE. UU. durante los primeros años de la Guerra Fría, hasta que a comienzos de la década de 1960 se establecieron normas de reporte para todo el ámbito de la defensa.
Ver el glosario →✦ Resumen IA
Se trata de un Informe de Información de Inteligencia Aérea de la Fuerza Aérea de EE. UU. fechado el 13 de enero de 1954, de la oficina del agregado aéreo en Estocolmo, titulado "'Flying Saucer' Sighted by Swedish Pilot". Reenvía la traducción de una nota de prensa sueca sobre un objeto "desconocido" visto el 17 de diciembre de 1953 a las 14:37 sobre Hässleholm (Suecia) por el capitán Ulf Christiernsson, piloto jefe de la aerolínea Transair, y su jefe de mecánicos Olle Johansson, mientras volaban un DC-3 de Bulltofta a Bromma a unos 2.150 metros. El piloto describió un objeto metálico brillante, casi redondo y ligeramente elíptico, que viajaba en sentido contrario unos 600 metros por debajo de ellos, justo por encima de las nubes, a lo que estimó que era la velocidad del sonido, visible durante seis o siete segundos; dijo que no podía haber sido un meteoro y que le pareció "una especie de robot". El Estado Mayor de la Defensa sueco declaró que no tenía noticia de aviones suecos en la zona y que estaba investigando, y el jefe de la Fuerza Aérea dijo que se estaba verificando qué podrían haber detectado las estaciones de radar. El informe añade una semblanza del piloto de una fuente de la Real Junta Aérea de Suecia que personalmente dudaba de su relato, y dice que la oficina del agregado intentaba obtener más información.
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▸Transcripción(3 de 3 páginas legibles)
[PAGE 1] UNCIASSIFIID AF FORM 112 (CLASSIFICATION) APPROVED I JUNf-~ COUNTRY REPORT NO. Sweden AIR INTELLIGENCE INFORMATION REPORT SUBJECT nny1ng Saucertt Sighted By S1red1sh Pilot AREA REPORTED ON FROM (..49=CV) SWeden IOAirA, Stockholm, Sweden DATE OF REPORT DATE OF INFORMATION :A:ATION 13 January 1954 IDecember 53 January 54 l.o-c. PREPARED BY ( Office,) SOURCE BURT R()VEN Ma or USAF MC IPress and P rsonal Contact REFERENCES (Cbnt:ro nu1nbn, dir i", prni011..J rtport, dt., a, applicabl•) BAm 3A SUMMARY: (Ellter omcise ~mmar11 of report. Gwe •lgnlftcanu Infinal 0110-,ente11« paragraph. Li& lnclorure• at lower le/I. B<glntat ofreport 011 AF Form JJI-Part II.) This report f'o:rwards information on the "unknown'' object sighted on 17 December It 1953 by Captain Ulf Christiernsson, near Hassleholm, Sweden. Included is a translation of captain Chr1st1ernsson•s description of the incident, as reported in an interview with the loca1 press. There is also a brief character sketch of cap~in Christiernsson. APPROVED: Authority: ~Ll~ NND 57597 Acting Air .\ttache LJBRARY SUBJECT & AREA CODES ~ tP ---INCL& DISTRIBI/TION BY ORIGINATOR A-2 USAFE; USArmA. Stockholm NOTE: THIS DOCUMENT CONTAINS INFORMATION AFFECTING THE NATIONAL DEFENSE OF THE UNITED STATES WITHIN THE MEANING OF THE ESPIONAGE ACT. SOU. S. C. 31 AND 32. /lS AMENDED. ITS TRANSMISSION OR THE REVELATION OF ITS CONTENTS IN ANY MANNER TO AN UNAUTHORIZED PERSON IS PROHIBITED BY LAW. IT MAY NOT BE REPRODUCED IN WHOLE OR IN PART, BY OTHER THAN UNITED STATES AIR FORCE AGENCIES. EXCEPT BY PERMISSION OF THE DIRECTOR OF INTELLIGENCE. USAF. UNCIASSIFIEO (CLASSIFICATION) [PAGE 2] UNCIASSIFIED AF FORM 112-PART II (CLASSIFICATION) APPROVED 1 JUNE 1948 ... r • 'AIR INTELLIGENCE INFORMATION REPORT FROM (Agencu) REPORT NO. OAirA. Stockholm. Sweden IR-J2 PAGE 2 OF 3 PAI.ES 1. On Thursday, 17 December 1953., while flying near HHssleholm, SWeden, Captain Ulf Christiernsson sighted an 11 unknown" object. The follorring is the translation of a newspaper account of the incident: "The chief pilot of Transair, Capt. Ulf Christiernsson, and his crew chief, Olle Johansson, had a strange meeting over HHssleholm at 1437 hours Thursday. A shining metal spherical elliptical object came toward them traveling in the opposite direction from their machine at an estimated speed of sound and approximately 600 meters below their DC-3, which was on its way from Bulltofta to Bromma. It was visible six to seven seconds; Capt. Chris tiernsson, who had good silhouette recognition, stated that what he saw was something absolutely new, possibly an unmanned robot. 11The Transair plane was automatic controls when the meeting occurred. Capt. Christiernsson did not have time for any measures other than to report to Bulltofta and the Defense Staff, which later sent out the following com munique: " •'rhe air crew of a civil aircraft observed on Thursday at 1437 hours over the area of HRssleholm an unknown object moving in the opposite direction from the airplane. The object was observed for six to seven seconds. At that time and altitude the weather was clear. Because of the low lying cloud for mations the object is not thought to have been seen from the ground. The De fense Staff does not know o.f any Swedish plane that was in that area at the time in question. An investigation is being conducted.• "Previously I have been extremely skeptical about all the stories of mysterious objects -- called flying saucers -- that have been seen at diverse points, said the Captain. Now I don't know exactly what to think; but it did seem to me that we had seen a robot of some kind. When I first caught sight of the object, which like us was in the civil air corridor, I thought it was a jet. We had, however, received no word that any such thing was on the way. "The object came toward us at what I would say was the speed of sound; we were flying at an altitude of approximately 2,150 meters and the object was around 600 meters below us. It was going in a southwesterly direction and disappeared after six or seven seconds. •tThe object had a strong metal shine; the crew chief, Johansson, who coulc see it longer than I, thought it was almost phosphorescent. The flying weathel was excellent above the clouds, which were at an altitude of about 1500 meters, and the sun was shining brightly. The object was proceeding just above the clouds. "The first silhouette I got diagonally from the right was narrow. When it was nearly directly under us, however, I saw that it was nearly round, just slightly elliptical. "The object, which could definitely not have been a meteor, gave off no waste gases or condensation traces. 11Was I afraid? No, but curious, very curious, concluded Captain Chris tiernsson. ItChristiernsson has seen just about everything in aviation and has very good silhouette recognition. From 1942 to 1946 he was a volunteer serving in NOTE: THIS DOCUMENT CONTAINS INFORMATION AFFECTING THE NATIONAL DEFENSE OF THE UNITED STATES WITHIN THE MEANING OF THE ESPIONAGE ACT. 50 U. S. C. 3I AND 32. AS AMENDED. ITS TRANSMISSION OR THE REVELATION OF ITS CONTENTS IN ANY MANNER TO AN UNAUTHORIZED PERSON IS PROHIBITED BY LAW. IT MAY NOT BE REPRODUCED IN WHOLE OR IN PART, BY OTHER THAN UNITED STATES AIR FORCE AGENCIES, EXCEPT BY PERMISSION OF THE DIRECTOR OF INTELLIGENCE. USAF. UNCLASSIFIED IR-J2 (CLASSIFICATION) 16-56670-1 U. S. GOV£JUOtENT PlltlHTING o,JPtC:t [PAGE 3] UNCIASSIFIED AF FORM 112-PART II (CLASSIFlCATION) APPROVED I JUNE 1948 - .. GJ 'AIR INTELLIGENCE INFORMATION REPORT FROM (Aomcr) OAirA. Stockholm, Sweden REPORT NO. m.-12 PAGE OF 3 PA~ES the Royal Air Force. He finished as a captain in the British Air Force, after making some thirty raids in a Mosquito against enemy territory, in both North Africa and Italy. "Air Force Chief, General Nordenskiild, announced that it had been ascer tained that the object could not have been any Swedish aircraft. •• 'We are now investigating/' he continued, 'what our radar stations might have spotted.•" 2. Captain Christiernsson is 41 years of age and was born in sl<Rne in the souther part of Sweden. An extremely reliable source in the Royal Swedish Air Board, who was born in the same town and who is a life-long acquaintance of Capt. Christiernsson's, has stated that Christiernsson is charming and well-liked, but that he is also most wi trustworthy and was dismissed from a former position for "financial difficulty''• Dur ing the last war, Christiernsson tried to take a Swedi.sh Air Force B-18 and fly to Eng land, but was intercepted at Gothenburg and was put in jail. Although it is generally agreed in the Swedish Air Force that Captain Christiernsson is one of the best (and most discussed) pilots in Sweden today, he has never served with the RSAF except as a reserve captain. ;. Although the source above personally doubts Christiernsson•s story, the news papers report that the Defense Staff is continuing its investigation of the incident. This office is attempting to obtain further information on the occurrence. ~ Major, USAF Assistant Air Attacbe NOTE: THIS DOCUMENT CONTAINS INFORMATION AFFECTING THE NATIONAL DEFENSE OF THE UNITED STATES WITHIN THE MEANING OF THE ESPIONAGE ACT. SOU. S. C. 31 AND 32, AS AMENDED. ITS TRANSMISSION OR THE REVELATION OF ITS CONTENTS IN ANY MANNER TO AN UNAUTHORIZED PERSON IS PROHIBITED BY LAW. IT MAY NOT BE REPRODUCED IN WHOLE OR IN PART, BY OTHER THAN UNITED STATES AIR FORCE AGENCIES, EXCEPT BY PERMISSION OF THE DIRECTOR OF INTELLIGENCE. USAF. UNCIASSIFIED IR-l2 (CLASSIFICATION) 1 8-66670-1 U. S. GOYHHMl!NT PRINTING OFl'I CI
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Comentario de AARO
Según la altitud reportada de la aeronave y la separación relativa, la altitud reportada del objeto era de aproximadamente 1.550 metros (5.085 pies). En condiciones atmosféricas estándar, la velocidad del sonido a esa altitud es de aproximadamente 748 mph.
Traducción automática — el documento original está en inglés. Ver en inglés →
Fuente: Departamento de Guerra de EE. UU. / AARO — dominio público · war.gov/ufo