What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO CLT DUE TO A LOUD ELECTRICAL ARCHING SOUND IN FLIGHT. RESET GALLEY AND CABIN SWITCH WITH MOC. SOUND WENT AWAY AFTER RESET AT ABOUT 26,000 FT. NO SMOKE NO FLICKERING NO ECAM MESSAGES NO CIRCUIT BREAKERS POPPED. NOISE CAME BACK LOUDER AT AROUND 4,000FT ON APPROACH THEN WENT AWAY AND EVERYTHING WAS NORMAL. THE AIRCRAFT LANDED SAFELY AT CLT WITHOUT FURTHER INCIDENT. **SUPPLEMENTAL REPORT FOR AALA202312195778: MAINTENANCE FOUND CONTACTOR 27XN WOULD RELAX INTERMITTENTLY WITHOUT COMMAND AND REPLACED IT PER AMM 24-51-55. A SATISFACTORY OPERATIONAL CHECK.** (CLOSED)