“Mystery of Heathrow jet near-miss with UFO”,
20 October 2008 (Evening Times, Glasgow, UK)
An Alitalia McDonnell Douglas MD-80 airliner had a near miss
with a UFO near Lydd in Kent, UK, on 21 April 1991, at about
8:00 p.m., the Evening Times reports:
http://www.eveningtimes.co.uk/mystery-of-heathrow-jet-near-miss-with-ufo-1.963834
The UFO incident is detailed in one of the UK MoD UFO files that were released on 20 October 2008.
The Civil Aviation Authority (CAA) and UK Ministry of Defence performed an extensive investigation of the incident.
Alitalia McDonnell Douglas MD-80 (flickr.com photo)