Originally Posted by
corporate-wage-slave
It may work on the BA App, but look at the seating area on BA MMB to get the AA PNR and then use the AA App in guest mode, it's just better for AA operated services.
+1 for the AA app, its not the best US airline app but its useful especially for the domestic legs in the US, often gate info is displayed a day in advance and there's a handy counter for things like boarding time. The maps feature is also quite helpful especially for somewhere massive like LAX.