The first training class of "original" A-10C pilots (though who are brand new to the Hog) just started last month. The only active squadron that currently has A-10C's is the 357th at Davis-Monthan who are the initial A-10C training unit. The Maryland ANG has A-10C's now, so any A-10C's that find themselves in combat next month will probably be from that unit. Most of the training is simulator based, because the airplane still flies the same, but there is a significant upgrade in avionics capability.
-10A's are used for the forward air controller mission (FAC-A), but the designation is somewhat misleading. There is no physical difference between an A-10A and an OA
-10A. The OA
-10A designation is mainly used on an Air Tasking Order (ATO) to identify an aircraft tasked for the FAC-A mission. The only difference are the weapons that are carried. A-10's flying the FAC-A mission will be loaded with several pods of "willy pete" rockets for marking targets. Some A-10's were designated as OA
-10's by the Air Force when they left the factory, and so to this day, regardless of what mission is being flown by the aircraft on any given day, the pilot logs OA