What was found
AIR TURN BACK - FOR ECAM: FLIGHT CONTROL Y SERVO FAULT. POST FLIGHT SHOWS "FCPC3 (2CE3)/Y RUD SERVO CTL (40CS2) SV XDCR" PER TSM 27-24-00-810-807-A OPS CHECK OF RUDDER WITH GROUND SCAN SHOWS NO FAULTS. PRECAUTIONARY CHANGE OF FCPC 3 PER AMM 27-24-51. SWAPPED PCPC 3 WITH NEW PCPC FROM SUPPLY PER AMM 27-93-34. CONDITION SAME. REINSTALLED ORIGINAL FCPC 3. PER TSM 27-24-00-810-807-A NEED TO REPLACED SERVO CONTROL RUDDER, T (40CS2). NEED TO ALSO OPS CHECK FCPC 3 FOR THE RE-INSTALLATION OF ORIGINAL FCPC. REMOVED RUDDER SERVO YELLOW SYSTEM REF AMM 27-24-51. INSTALLED YELLOW SYSTEM RUDDER SERVO CONTROL PER AMM 27-24-51-400-801-C. OPS/LEAK CHECK OK. OPS CHECK OK FCPC3 OK REF AMM 27-93-00-710-801-C. (LAND CAT III CAPABILITY TEST OK PER AMM 22-97-00).