ACR X LANDED ON OCCUPIED RWY HAD LTSS FROM ACR Y. PLT DEV. SYS ERROR.

Narrative

ACR X LANDED ON RWY 29 OAK JUST AS AN ACR Y CLRED THE RWY. ON R BASE I WAS CLRED TO LAND ON RWY 29 BEHIND JET TFC. AS I TURNED FINAL; TWR COULD SEE THAT I WAS CLOSER THAN THEY WOULD LIKE AND ASKED ME TO DO S-TURNS. I RESPONDED WILCO AND BEGAN MY S-TURNS AND ALSO REQUESTED A LONG LNDG BECAUSE I KNEW THE JET HAD MISSED THE NORMAL TURN AND WAS MOVING SLOWLY TO THE NEXT TXWY. ON SHORT FINAL; I MADE MY REQUEST FOR A LONG LNDG WHICH WAS APPROVED. DURING THIS TIME; I LEVELED OFF 10-20 FT ABOVE THE RWY AND FLEW SLOWLY OVER IT WAITING FOR THE JET TO CLR AND FURTHER INSTRUCTIONS. AS THE TAIL OF THE JET CLRED THE RWY; THE TWR CTLR; IN A SLIGHTLY PANICKED VOICE; YELLED 'OFFSET L; CLR TO LAND' AT WHICH TIME I REDUCED PWR; LANDED AND CLRED THE RWY. AS I TAXIED; GND CTL ASKED ME TO CALL THE TWR ON THE PHONE AFTER I GOT IN. ABOUT 45 MINS LATER I DID CALL THE TWR AND HAD A FRIENDLY YET INACCURATE (ON THEIR PART) DISCUSSION. THEY INFORMED ME OF AN ATC RULE THAT REQUIRES OTHER ACFT TO BE AT LEAST 500 FT ABOVE THE RWY IF OVERFLYING THE RWY WITH A JET ON IT. THEY ALSO TOLD ME THAT THEY HAD TOLD ME TO OFFSET L PRIOR TO REACHING THE RWY. I TOLD THEM THAT I DID NOT KNOW OF SUCH A RULE AND THANKED THEM FOR THE INFO; HOWEVER I EXPLAINED THAT THE OFFSET L INSTRUCTIONS CAME TOO LATE AND WERE NOT CLR.