What was found
(CAN) ON APPROACH, FLIGHT CREW REPORTED A FLIGHT CONTROL PROBLEM WHICH REQUIRED A GO-AROUND. AS A PRECAUTION, THE CREW DECLARED AN EMERGENCY WITH ATC (PAN-PAN) AND LANDED SAFELY. ON FLAP EXTENSION TO FLAPS 1 DURING APPROACH S-LOCKED. UNABLE TO CLEAR BY RECYCLING FLAP LEVER. COMPLETED QRH AND ECAM LAND FLAP 3. LOCKED DURING INITIAL ECAM. LT WTB (35CV) FOUND BREAKOUT TORQUE, OUT OF LIMIT (MORE THAN 0.5NM). LT WTB REPLACED AND TESTED IAW AMM 27-81-51PB 401.