Originally Posted by vasantn
I'm no expert on BA tier points, but I seem to recall reading that A fares will not give you the same tier points as F fares (although I may be completely mistaken). Be sure you have done your research!
YUP fares on AA 2 class service give F level BAEC tier points. The only potential caveat is if you don't get seated in F (which technically could happen but has never happened to me) you may only get coach level tier points.