COUNTRY USSR DCD REPORT NO. SUBJECT Aerial Observation of Intense Source of Light DATE DHTR. NO. PAGES DATE Or !NFQ. September 2976 REFERENCES T H I S7I S UNEVAl CrAT D INF ORMAT 10 N DCD Case : 1. An unusual incident was observed during. a- 10. September- 19/6 British European Airways (BEA) flight (number 31) fror Me scow to London. Between 1800 and 1900 hours, the aircraft was cruising at- an altitude of approxi- mately 33 thousand feet (9,900 meters), apparently inside the border of Lithuania, when a blinding, single source, constant intensity, and stationary light was" observed off the starboard flight path of the air- craft. The light's distance was estimated to~be appro"Xi mat ely 10 to 25 miles (16 to 24 kilometers) off of the. aircrafts path and approximately five to six thousand feet (1,500 to 1,800 meters) below the aircraft, somewhat above a lower cloud layer; The lightp which resembled a sodium, vapor lamp (yellowish in color), and which was too intense to view directly for any period of time, completely lit the top of the lower cloud layer, giving it a gloving cast. 2. The light was of such interest that the BEA pilot came onto the aircraft's intercom network, stated that he was somewhat concerned over its presence, and said he had asked the Soviet authorities for an Identification of its source. Tie Soviet authorities came lack with a negative identification response, suggesting that he should not ask questions. The light was observed for approximately 20 to 25 minutes, until the aircraft had flown past and left the light source behind. SUBJECT Ac-rial Observation of Intense Source of Light DATE DIETS. 1 S NOV 137$ NO. PAGES 1 DATE G? INFO. September 1976 ~ ' _ ' THIS IS UNEVATUATcD IN F Q R M ATI O N'~ 1. An unusual incident vas observed during a .10 September 1976 British European Airways (BEA) flight (number 831) f rorT Me scow to London. Between 1800 and 1900 hours, the aircraft was cruising at an altitude of approxi- mately 33 thousand feet (9,900 meters), apparently inside the border of Lithuania, when a blinding, single source, constant intensity, and stationary light was" observed off the starboard flight path of the. air- craft. The light's distance was estimated to be- approximately 30 to 15 miles (16 to 24 ki loner fers)r of f- of- the- aircrafts path and approximately five to six thousand feet (1,500 tc 1,300 meters) below the aircraft, somewhat above a lover cloud layer. The" 1 iyh t , which Tbs er.b led a sodium vapor lamp (yellowish in color), and which was too intense to view directly for any period of time, completely lit the top of the lover cloud layer, giving i t a glowing cast. 2. The light was of such interest- that the BEA pilot came onto the aircrafts intercom network, stated that he vas somewhat concerned over its presence, and said he had asked the Soviet authorities for an identification of its source. The Soviet authorities came back with a negative identification response, suggesting that he should not ask questions. The light was observed for approximately 30 to 15 minutes, until the aircraft had flown past and left the light source behind.