Aviation encounter — Heathrow, Airport — 1998-06-12

A McDonnell Douglas MD81 two pilots reported an aerial observation at or near Heathrow, Airport on 12 June 1998. A metallic-gray object reportedly passed about 20 ft from the aircraft. Source: Dominique F. Weinstein, Unidentified Aerial Phenomena: Eighty Years of Pilot Sightings (NARCAP TR-04, February2001), PDF page56, table row3.