500mi SEof Newfoundland 43deg45N40deg47W radar-visual unidentified-object report — December 26, 1949

On or during December 26, 1949, at or near 500mi SEof Newfoundland 43deg45N40deg47W, the source reports the following sequence: RPT ------|------ ---- ----- | ----- (weather) ------|------ ----- ----- | ----- Unidentified object approached a/c from rear. LM references at lower left. Data sources at upper left areas DD Forms 1-112 and 1-115.) "On 26 December 1949, while on a routine training mission from this base to the United Kingdom, aircraft No. 48-299 Line 2-L-113 was approached for four minutes by an object traveling at a speed of approximately 600 miles per hour. The target was detected on the APQ-13 radar set and was not sighted visually. /s/ R.