What was found
INSPECTION TYPE:N/A**EMERGENCY DECLARED**ECAM L/G NOT DOWN LOCKED PROC: L/G GRAVITY EXTENSION. CREW FOLLOWED ECAM AND PROCEDURE UNSAFE RIGHT MLG ON ALL THREE INDICATION SYSTEMS. VERIFIED MLG DOWN WITH TOWER. AS A PRECAUCTION WE REVIEWED PROC: LDG WITH ONE MAIN L/G ABNORMAL L/G *NOT REPORTABLE SDR*RETRACTED/EXTENDED LANDING GEAR PER AMM 32-31-00-501. R MLG WILL NOT FULLY EXTEND & LOCK. T/S PER TSM 32-30-00. SUSPECT FAULTY MAIN GEAR SEQUENCE VALVE. REPLACED BRACE STRUT ACTUATING CYLINDER PER A300 AMM 32-31-55-0401, OPS AND LEAK CHECK IS GOOD.