SCT LAX COORD LIGHT ON. SF34 DEPARTS LAX CLBING TO 3000 FT VICE 2000 FT REF COORD LIGHT AND HDG 270 DEGS. RPTR STATES THIS DID NOT ENSURE SEPARATION FROM SMO DEPARTING RWY 21 AND THAT THE 270 DEG HDG OFF LAX SHOULD HAVE BEEN STOPPED. RPTR SAYS TRACON MGMNT DID NOT INVESTIGATE THE INCIDENT FOR POSSIBLE LOSS OF SEPARATION.

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THE AA5 DEPARTED SMO ARPT'S RWY 21. ON INITIAL CONTACT I RADAR IDENTED THE ACFT AND TURNED THEM R TO 260 DEGS AND CLBED THEM TO 5000 FT. THE SF34 DEPARTED LAX ON A 270 DEG HDG CLBING TO 3000 FT. THE 270 DEG HDGS WERE 'STOPPED' FOR THE SMO DEPS AND THE RESTR LIGHT WAS ILLUMINATED. THE RESTR LIGHT BTWN LAX TWR AND SCT RESTRICTS ALL LAX DEPS TO 2000 FT. THE UNEXPECTED HDG OF 270 DEGS AND ALT OF 3000 FT ON THE SF34; PLACED THE ACFT ON A COURSE THAT DID NOT ENSURE SEPARATION FROM THE SMO DEP. I IMMEDIATELY TURNED THE SMO DEP FURTHER TO THE R (AWAY FROM THE SF34). AT THIS TIME IT IS STILL UNKNOWN IF SEPARATION WAS ACTUALLY LESS THAN PRESCRIBED IFR SEPARATION. SCT MGMNT DID NOT INVESTIGATE THIS INCIDENT OR POSSIBLE LOSS OF SEPARATION. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR SAID THERE IS AN AGREEMENT BTWN SMO TWR AND LAX TWR FOR COORD OF SMO DEPS -- METROLINERS TYPE AND ABOVE -- WHICH REQUIRES SMO TO COORDINATE THE RELEASE OF THESE ACFT WITH LAX. WHEN LAX APPROVES A RELEASE; THE RWY 24 DEPS ARE HELD AND THE RWY 25 DEPS ARE GIVEN A HDG OF 250 DEGS VICE 270 DEGS. RPTR INDICATED THE TRACON/LAX TWR COORD LIGHT REQUIRES THE TWR TO RESTRICT DEPS TO 2000 FT FOR OVERFLYING VFR TFC WHEN IT IS ON. SINCE FILING A UNION RPT AND A UCR; RPTR ALLEGES THE INCIDENT IS NOW UNDER INVESTIGATION.