777 F Configuration to LHR
After much consideration and wanting to try the flagship suite, heavily advertized on AA.com I've decided to upgrade to F using miles, only to discover that it was 2x2x2 configuration. I did fly in F last year from GRU and the configuration was 1x2x1, with swiveling seats, etc... Is this configuration not available on flights to LHR? only certain ones, how can I find out apart from calling or checking each flight seats on aa.com?