Some related threads:
http://www.flyertalk.com/forum/Forum71/HTML/007765.html has a list of the configs of various flights to LHR (accurate as of at least a couple months ago)
http://www.flyertalk.com/forum/Forum71/HTML/007805.html is a thread I started re what compensation (if any) is due to a passenger who booked F on the basis of the AA website promise of F Suites on Atlantic routes (see
http://cyber.law.harvard.edu/people/...inks/aa-fs.asp ) but then got the Pacific config.