COMMUTER ACFT ON RWY 24R. ACR WITH SIMILAR CALL SIGN ON 24L. COMMUTER CLRED FOR TKOF; THEY THOUGHT. DEPARTED; TOLD CLRNC FOR OTHER ACFT.

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WHILE IN POS FOR TKOF; AS COMMUTER-EBC ON RWY 24R. ACR- ICC WAS CLRED FOR TKOF ON THE PARALLEL OF 24L. WE AS COMMUTER EBC UNDERSTOOD HE CLRNC A TKOF FOR US. WE READ BACK THE CLRNC AS CLRED FOR TKOF FOR COMMUTER EBC AND WE PROCEEDED TO DEP. WHEN SWITCHING TO DEP FREQ TWR ADVISED DEP CLRNC WAS FOR ACR-ICC. THEIR WAS NO CONFLICT FROM ICC WHO ALSO THOUGHT THE CLRNC WAS FOR US; UPON ARR AT MRY; CA; TELEPHONED LAX TWR TO CONFIRM OUR POS. WE WERE TOLD THAT NO DISCREPANCY WAS NOTED AND ALL WAS WELL. THE CAUSE WE CREW MEMBERS BELIEVE IS THE CONTINUOUS PROBLEM WITH SIMILAR SOUNDING CALL SIGNS. LAX TWR WAS EXTREMELY BUSY AND THE WORKLOAD FOR TWR OPERATORS AND FLT CREW MEMBERS SHOULD NOT BE INFLUENCED WITH THIS INCREASING HABIT OF SIMILAR CALL SIGNS. CALLBACK PHRASE. RPTR STATES HE CALLED AFTER LNDG AS THE SPECIFICS WERE NOT CLR. HE DID NOT WANT TO FIND OUT A PROBLEM EXISTED AFTER THE FACT. HE FELT SUPVR HE TALKED TO WAS NOT DISTURBED OR UPSET. RPTR FEELS CTLRS AT LAX ARE VERY OVER LOADED AND DO A SUPERB JOB UNDER THE EXISTING CONDITIONS.