I carry several CX jumpseaters out of SFO on a regular basis.Since you are not in CASS,you are unable to have cockpit access,but more than happy to give you a seat in the back....AWA pilots(the company that saved USAirways backside)are more than happy to accomodate jumpseaters,just make sure you have all the proper ID.....if possible try to talk to the Capt/FO as gate agents tend to be "prickly"if they dont see you on the designated jumpseat list in the computer..if its my flight,youll always get a ride....welcome aboard