PLT ACCEPTS VFR CLRNC NOT KNOWING FOR SURE WHAT HE IS SUPPOSED TO DO AFTER TKOF BUT GUESSING ON THE BASIS OF PAST MEMORY.

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IT WAS A CLR MORNING WHEN I DEPARTED BURBANK. I CALLED CLRNC DELIVERY AND TOLD THEM I WAS DEPARTING VFR NW 330 DEGS AND WANTED TO CLB TO 7500 FT. (N OF CTLED AIRSPACE I PLANNED TO TURN E TO MY FINAL DEST.) I WAS TOLD I WAS CLRED VFR DEP NW VIA 'HOLLYWOOD FREEWAY' DEP; GIVEN SQUAWK AND DEP FREQ. NO HDG OR ALT WAS IN THE CLRNC. I DID NOT HAVE A WRITTEN OR VERBAL DESCRIPTION OF THE PROC; BUT FELT IT WAS NOT A PROB BECAUSE I HAD BEEN IN BURBANK A COUPLE OF TIMES BEFORE AND HAD THEN ASKED ABOUT THE PROC AND WAS TOLD TO EXPECT VECTORS TO A NW HDG AND THEN I WOULD 'KEEP THE FREEWAY OFF MY R WING.' UPON BEING CLRED FOR TKOF; I WAS TOLD 'CLRED FOR EARLY R TURN;' FROM RWY 15. (THERE WAS A B737 BEHIND ME.) AFTER LIFT-OFF; I TURNED R TO A WESTERLY HDG; AND AFTER CLRING THE ARPT TURNED R TO A NW HDG AND WAS GETTING SET TO KEEP THE FREEWAY OFF MY R WING. STILL NO INSTRUCTIONS ON HDG OR ALT; I WAS FLYING THE DEP THE WAY I REMEMBERED IT IN THE PAST; BUT THEN WAS WITH VECTORS/ALT INSTRUCTIONS. CLBING THROUGH ABOUT 2400 FT MSL; BURBANK TWR CALLED ME AND I THOUGHT I UNDERSTOOD 'UNTIL ABOVE 3000 FT OR CLR OF CLASS D; KEEP THE GOLDEN STATE FREEWAY OFF R WING; CALL DEP.' THE RADIO HAD BEEN BUSY; SO I QUICKLY READ BACK 'I'LL KEEP THE FREEWAY OFF THE R WING; GOING TO DEP; THANKS.' WITH THE DEP FREQ ALREADY SET UP; I WAS WITH SOCAL APCH IN A PUSH OF A BUTTON. JUST AS I WENT TO DEP; THE INSTRUCTION 'CLASS D' DID NOT MAKE SENSE; SINCE I WAS IN CLASS C. I TOLD DEP I WAS AT 2400 FT (OR THEREABOUT THE BEST I CAN REMEMBER) CLBING TO 7500 FT. EVERYTHING SEEMED FINE AND THE REST OF THE TRIP WAS UNEVENTFUL. THE ONLY THING WRONG WITH THE REST OF THE TRIP WAS I KEPT WONDERING IF I HAD FLOWN THE DEP PROC CORRECTLY; AND DID I UNDERSTAND THE LAST INSTRUCTION FROM BURBANK TWR CORRECTLY. THE ANSWER MIGHT BE YES OR NO; AND NOT KNOWING FOR SURE IS THE PROB. NEXT TIME I WILL ASK FOR MORE SPECIFICS ON A PROC; AND TRY TO READ BACK ALL INSTRUCTIONS; NOT JUST PART. IT HAS BEEN MY EXPERIENCE THAT LCL APCH/DEP PROCS (NOT SIDS/STARS) CAN BE REAL TRAPS FOR ASSUMING EVERYONE UNDERSTANDS AND IS FAMILIAR.