A B737-300 WAS DISPATCHED IN NON COMPLIANCE WITH THE AFT CARGO COMPARTMENT FIRE LOOPS 'A' AND 'B' INOP AND THE COMPARTMENT LOADED IN CONFLICT WITH THE MEL REQUIREMENTS.

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DISPATCHED TO ZZZ1 WITH BOTH AFT FIRE LOOPS INOP AND THE B LOOP OF THE FORWARD PITS INOP. MEL #2623R. THE MRD REFLECTED THE ACFT WAS CLRED TO FLY. WE FLEW TO ZZZ1 AND ON ARR WAS MET BY AN FAA INSPECTOR THAT STATED THE FORWARD AND AFT PITS WERE NOT AVAILABLE FOR LUGGAGE OR CARGO. I CALLED MAINT. WAS TOLD BY 1 MECH THAT IT WAS OK TO FLY AND BY ANOTHER THAT IT WAS NOT. THE FAA INSPECTOR STATED THAT THE MEL ITEM INDICATED THAT 4 FIRE LOOPS WERE STANDARD AND THAT 2 FIRE LOOPS WERE MINIMUM. SINCE WE DID NOT HAVE THE MINIMUM NUMBER OF LOOPS WE COULD NOT USE THE PITS WITHOUT VIOLATION. THE MEL ITEM IS EXTREMELY DIFFICULT TO INTERPRET THESE NUMBERS BY A PLT. THE FAA INSPECTOR STATED HE INSPECTED THE SAME ACFT LAST MONDAY. I COMMUNICATED THIS TO DISPATCHER; MAINT AND FLEET CAPT. I FEEL WE SHOULD NOT HAVE TO GO INTO THE DEPTHS OF MAINT DOCUMENTS TO INTERPRET DIFFICULT NUMBERS TO DISCOVER WHETHER OR NOT OUR ACFT IS LEGAL TO FLY! I LEARN THAT IN THE FUTURE I WILL QUESTION MAINT ON EXOTIC DEFERRALS A LITTLE MORE IN-DEPTH. THE LABOR PROBS AT ACR HAS CAUGHT UP WITH US! THE INSPECTOR STATED HE HAD INSPECTED THE SAME ACFT FOR THE SAME INFRACTION EARLIER THIS WK ON MONDAY. HE EXPERIENCED THE SAME REACTION THEN AS TODAY.