The pilot, co-pilot and flight engineer of Japan Airlines flight 1628 from Paris to Tokyo saw the lights of an unidentified object flying parallel to them while passing over eastern Alaska.
Capt. Kenju Terauchi, the pilot, stated he briefly saw an object in silhouette and described it as being twice the size of an aircraft carrier.
Besides appearing on the plane's radar, it was also detected by the FAA and Air Force.