A BA32 RESERVE CAPT FLEW THE WRONG DEP HDG AFTER FAILING TO RECOGNIZE THAT A NEW SID WAS IN EFFECT. THE SID REVISION WAS IN THE RPTR'S MAILBOX AT HIS BASE; BUT HE HAD BEEN ASSIGNED TO ORIGINATE THE TRIP FROM ANOTHER ARPT.

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WE WERE GIVEN A SID FOR DEP FROM LAX. UNFORTUNATELY WE HAD THE WRONG SID ON BOARD; THEREFORE WE FLEW THE WRONG SID. WE FLEW RWY HDG WHEREAS THE NEW SID SAID TO TURN L TO A HDG OF 200 DEGS; AT THE SANTA MONICA 154 DEG RADIAL. SLI3.SLI IS THE NEW SID THAT WENT INTO EFFECT ON JUN/XA/96. WHY DIDN'T I HAVE THE NEW SID ON BOARD? MY NORMAL BASE FOR MY AIRLINE IS ONTARIO WHERE I HOLD A RESERVE LINE. SINCE I AM ON RESERVE; I FLY OUT OF OTHER STATIONS QUITE OFTEN. THEREFORE; THE FIRST THING I DO WHEN I GET TO ANOTHER STATION IS CHK THE CURRENT REVISIONS SINCE I AM UNABLE TO GET TO MY MAILBOX. THE COMPUTER (VIA FLT CTL) HAD THE CURRENT REVISION AS #23. UNFORTUNATELY THE CURRENT REVISION IS ACTUALLY #24. ALSO; #24 REVISIONS WERE NOT YET DISSEMINATED INTO THE PALM SPRINGS MAIL BOXES (WHERE I STARTED MY MORNING TRIP). ALSO; THE FLT DISPATCH FORM WHICH INCLUDES OUR CLRNC FILED BY FLT CTL HAD THE OLD SLI2.SLI SID. NEXT TIME I BETTER LISTEN TO THE CLRNC A LITTLE BETTER WHEN TALKING TO CLRNC DELIVERY. IF I PAID MORE ATTN I WOULD HAVE HEARD SEAL BEACH 3; SEAL BEACH TRANSITION RATHER THAN SEAL BEACH 2; SEAL BEACH TRANSITION.