A B737-800 CAPT RPTS CONFUSING AND CONTRADICTORY OPERATING INFO REGARDING THE AIRWORTHINESS DIRECTIVE PROC TO MAINTAIN 1000 LBS OF FUEL IN THE CTR TANK.

Narrative

VERY EARLY DEP AND READ SUPPLEMENTAL OPERATING PROC AND THE AIRWORTHINESS DIRECTIVE BUT WAS CONFUSED BY THE SUPPLEMENTAL OPERATING PROC BECAUSE IT SEEMED CONTRADICTORY. FUELERS PUT 1000 LBS IN CTR TANK AND THE FUEL SLIP STILL SHOWED STANDARD FUEL LOAD EVEN THOUGH WING TANKS WERE NOT FULL. WHEN I CALLED LOAD FOLKS AFTER I LANDED FROM THE SECOND LEG; THEY SAID THAT WITH THAT FUEL LOAD IT WAS STILL SUPPOSED TO SAY STANDARD AND THAT THE LOAD COMPUTER LOGARITHMS HAD BEEN CHANGED EVEN THOUGH NONE OF OUR MANUALS OR THE SUPPLEMENTAL OPERATING PROC INDICATED THIS. I READ THE SUPPLEMENTAL OPERATING PROC AND COULD HAVE SWORN IT SAID I COULD BURN THE CTR TANK FUEL IN CRUISE; SO THAT IS WHAT I DID. AFTER READING IT A FOURTH TIME; I REALIZED I READ IT WRONG. I WAS TOLD IT WAS USABLE SO I USED IT. THE BULLET #4 ON THE SUPPLEMENTAL OPERATING PROC STATES THAT IF THERE IS NO REQUIREMENT TO OPERATE CTR PUMPS YOU DO NOT NEED CTR FUEL; BUT WE STILL RECEIVED IT. WE DID NOT HAVE FULL WING TANKS SO THERE WAS NO NEED TO OPERATE THE CTR PUMPS UNDER THE CIRCUMSTANCES.