What was found
AFTER TAKEOFF AND PUTTING THE LANDING GEAR HANDLE UP, LANDING GEAR RETRACTED. WHEN PLACING THE LG HANDLE TO THE OFF POSITION, RECEIVED AN ECAM FOR L/G DOORS NOT CLOSED. HAD ASSOCIATED LOUD NOISE WITH THE INDICATION. NLG DOOR AMBER LIGHT ILLUMINATED. COMPLIED WITH EO A300-5230-70836-A, AND CONFIRMED THE RT FWD NLG DOOR STAYED CLOSED WITH HYDRAULIC PRESSURE.