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 (ou:.TRY L'SSR                                      Oct) REPOT No          K-324/336f1-i6
 SUBJECT Aerial Observativo of .intense              DAi# Dt:TR. $ ~ft~~' 19Th
 Source of Light
 NO. PACES          1
 'P.EFERENCES ACD Case
 GATE OF INFO.  Sen ems?+er 116
 THIS IS UNEVALUATED INFORtdATIbU
 1.  An unusual incident was observed during a 10 Septenber 191'  British
 European Airways (BEA) flight (number 831) fror.. Moscow to London.  Between
 1530 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
 utatiorary light was observed off the starboard flight path of the air-
 craft.   The light's distance was estimated. to be approximmately 10 to 15
 niies  (16 to 24 kilometers) elf of the aircraft's pit' and approx:natc'i
 five to six thousand feet (1,500 to 1,800 asters) t?elow the aircraft,'
 so:wwhat above a ]owe: cloud layer.  The light, which reser:b)ed a sodium
 vapor lamp (yel;e.wish in color), and which was too intense to vie::
 directly for any period of time, completely lit the top of the lower cloud
 layer, giving it a glowing cast.
 2.  The light was of such interest that the BEA pilot ca,^c onto the aircraft's
 intercom network, stated that he was some hat concerned over its presence,
 and said he had asked the Soviet authorities fr'r an identification of its
 source.  The Soviet authorities cane Lack with a negative ideatificatior
 response, suggesting that he should not ask questions.   TIM! light was
 observed for approximately l0 to 5 minutes, until  the aircraft had floor.
 past and left the light source behind.

