Originally Posted by
EBiafore99
I am not sure it's so out of date...they may have just not changed the name to D1 yet. It has the Premium Select fare code(s) in there.
It is rather out of date. S is now a Comfort+ fare (along with W). Delta no longer users P/A/G for first class since they switched to business class fare codes (J/C/D/I/Z) for all domestic first products. P/A/G are now exclusively aligned to Premium Economy fares.