AIRBUS 300 FLC ENCOUNTERS TURB CAUSING DUTCH ROLLS WHILE ENRTE.

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MY ACFT WAS TAKEN AWAY ABOUT 30 MINS PRIOR TO DEP AND I WAS GIVEN ANOTHER WHICH HAD BOTH YAW DAMPERS INOP AND BOTH AUTOPLTS INOP. THIS WAS DONE WITHOUT ANY DISCUSSION OR BRIEFING WITH ME BY DISPATCH; SJU MAINT OR THE CREW THAT BROUGHT THE ACFT IN. ON THE LATTER; I WILL STATE THAT THE CREW THAT BROUGHT THIS ACFT IN AND WAS TURNING IT OVER TO ME MADE NO ATTEMPT TO BRIEF ME ON THE CONDITION OF THE ACFT. THE FO STOOD RIGHT NEXT TO ME AT THE GATE I WAS LEAVING AND THE CAPT; PRESUMABLY; WALKED PAST ME AS I WAS LEAVING THE GATE. THIS WAS BEFORE I KNEW ALL THE FACTS INVOLVING THE ACFT. WHEN I FINALLY FOUND OUT WHAT WAS GOING ON WITH THE ACFT; I EXPRESSED MY EXTREME DISPLEASURE CONCERNING THE LACK OF PROTOCOL WITH MOD. I TOLD HIM I WOULD LOOK INTO THE MEL LEGALITIES AND DISCUSS THE ISSUE WITH MY FO AND GET BACK TO DISPATCH AND LET THEM KNOW MY DECISION. I FOUND THAT; VIA THE MEL; MY PAST EXPERIENCE AND ULTIMATE OPINION; THAT THE FLT MET THE BASIC MINIMUMS OF SAFETY OF FLT. I DECIDED TO TAKE THE ACFT WHICH WAS COMPLETELY LEGAL. I THEN ATTEMPTED TO GO TO THE CAPT THAT BROUGHT THE ACFT IN. HE HAD TAKEN MY ACFT AND THE DOOR HAD ALREADY BEEN CLOSED ON HIS FLT TO BOSTON. SJU MAINT NEVER ATTEMPTED TO COME AND BRIEF ME. 2 FLT ATTENDANTS LEFT THE FLT DUE TO CONCERNS ABOUT SAFETY. MY #1 RECRUITED A DEADHEADING FLT ATTENDANT SO WE COULD MAKE THE FLT. RIGHT AT LEVELOFF; THE ACFT WENT INTO SOME MILD TURB AND STARTED TO DUTCH ROLL +/-5 DEGS. I IMMEDIATELY WENT TO A LOWER ALT; PUMPED THE TRIM FUEL FORWARD AND SLOWED UP. THE DUTCH ROLL WAS REDUCED TO A MINIMUM TOLERABLE AMOUNT AND I PROCEEDED TO MIA WITHOUT FURTHER INCIDENT. THE FLT WAS NEVER IN DOUBT REGARDING SAFETY. BOTH MYSELF AND THE FO FELT FINE WITH THE ENTIRE SIT; THOUGH IT WAS TAXING TO PUT SO MUCH EFFORT INTO MONITORING THE FLT WITHOUT AID OF AUTOPLTS OR YAW DAMPERS. THE NEXT DAY I BRIEFED MY CHIEF PLT ON THIS INCIDENT AND MY DISPLEASURE THAT NO ONE INVOLVED SAW FIT TO BRIEF ME OR SEEK MY INPUT. I ALSO SENT THE PARAMETERS OF THE FLT; AS I EXPERIENCED IT; TO THE A300 FLEET MGR.