Originally Posted by
benjybl
UPDATE:
Sorry to resurrect an old thread, but it seems (and I'm probably not the only one to have noticed this) that SeatCounter is now actually showing AP inventory. D and W classes, for purely AC flights, are showing (and, from my experience, fairly accurate).
It seems that it does not show all classes for all flights, though. For instance, GCM-YYZ shows A B C H I J L M Q S U V Y Z but no D or W.