Originally Posted by MisterNice
In 2 class service where an airline does not offer its former F/C, it now now offers an "enhanced" business service noted as "J" ie CO B/F, DL B/E, NW WBC etc.
lots of 3-class carriers use j as well (usually instead but sometimes in addition to c). in fact i can't think of a single OW carrier that codes business class as c (though i'm not thinking very deeply).