AN A320 CAPTAIN REPORTS A SECOND TIME FINDING PREVIOUSLY DEFERRED ITEMS THAT ARE IN CONFLICT. THE MEL SPECIAL PROCEDURES REQUIRED SWITCH POSITIONS THAT COULD NOT BE ACCOMPLISHED WHILE COMPLYING WITH THE OTHER OPERATIONS PLACARD.

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ARRIVED AT OPS AND WAS REVIEWING PAPERWORK. SAW A LONG LIST OF MAINT ITEMS; SOME OF WHICH WERE SOP RELATED. IN CHECKING THEM; NOTICED THAT TWO OF THEM SEEMED TO BE IN CONFLICT WITH EACH OTHER. THEIR NON-STANDARD PROCS REQUIRED SWITCH POSITIONS THAT COULD NOT BE ACCOMPLISHED WHILE COMPLYING WITH THE OTHER OPS PLACARD. I CALLED MAINT CTL. MAINT CTL TOLD ME HE WOULD CALL BACK AFTER CONSULTATION WITH SOMEONE ELSE. I TOOK THAT OPPORTUNITY TO CALL DISPATCH AND SPOKE WITH SOMEONE WHO TOLD ME THE FLT HAD FLOWN FOR TWO DAYS IN THIS CONDITION. THERE ARE TWO ISSUES I HAVE WITH THAT: FIRST; THERE WERE MANY OPPORTUNITIES TO FIX AT LEAST ONE OF THE PROBS; SO AS NOT TO CREATE THE PROB. SECOND; AND OF MORE CONCERN; IS THAT THE ACFT APPARENTLY FLEW AT LEAST FOUR LEGS IN THIS CONDITION AND NO OTHER DISPATCHER OR CAPT DISCOVERED THIS PROB BEFORE I DID. I ASSUME THAT WOULD MAKE EACH OF THOSE FLIGHTS AN ILLEGAL DISPATCH? THIS IS THE SECOND TIME IN A FEW MONTHS THAT I HAVE BEEN ASKED TO DISPATCH WITH AN ACFT WITH ILLEGAL MAINT DEFERRALS...COINCIDENTALLY BOTH TIMES WERE IN ZZZ! THE CURRENT MAINT CONDITION OF THE A320 FLEET HAS GIVEN ME SOME CAUSE FOR CONCERN; ESPECIALLY GIVEN THE MINIMAL NUMBER OF STATIONS WHERE ANY MAINT ACTION CAN ACTUALLY BE ACCOMPLISHED. IN THIS INSTANCE; TWO DEFERRALS; WITH SOMEWHAT 'BUSY' NON-STANDARD PROCS BEFORE AND AFTER TKOF APPEARED TO NOT EVEN BE LEGAL.