Thanks all. Have tried all suggested options. Unfortunately the lhr-lgw archive files wont open on my laptop. They come as .mht files and I'm struggling with them. Then on BA Source the only day missing from the May 2012 archive is the one I'm after! Have tried jet tracker, route tracker and flight tracker and there is no data for that day. If anyone is able to help I'm trying to find out the reg of flight BA0289 LHR - PHX on 29th May 2012. Cheers.