What was found
LEFT MLG AMBER DOOR LIGHT REMAINED ILLUMINATED AFTER MLG RETRACTION, CYCLED GEAR IAW CHECK LIST, ALL INDICATIONS ARE NORMAL. PERFORMED PSEU TEST FOUND CODE 54 CARD FAULT. R & R PSEU,CYCLED GEAR OPS CHECKED GOOD. ALSO CHECKED RIGGING OF DOOR SENSOR, NO DEFECTS NOTED.