What was found
AIRCRAFT WAS GROUNDED: DUE TO REPEATS OF LANDING GEAR DISAGREE ECAM,AND TO AVOID FUTURE DELAYS, CANCELLATION ,AND LENGTHY OTS EVENTS ACCOMPLISH TSM 32-31-00-810-888-A. MAINTENANCE FOUND MISSING SCREW THAT HOLDS TARGET. REPLACED TARGET AND SCREW INSIDE UPLOCK ACTUATOR FOR 27GA PER AMM 32-31-14. OPS CHECK GOOD.