What was found
AFTER EXTENDING THE LANDING GEAR IN PREPARATION FOR LANDING, CREW REPORTED MLG DOOR OPEN LIGHT ILLUMINATED. ACCOMPLISHED QRH PROCEDURE AND PERFORMED AN ALTERNATE GEAR EXTENSION RESULTING IN BOTH MAIN GEAR DOORS CONTACTING THE RUNWAY DURING LANDING. MAINTENANCE FOUND THE RT MLG DOOR PROXIMITY SENSOR TARGET DAMAGED. REPLACED TARGET SUPPORT AND INSTALLED & ADJUSTED TARGET ON RT GEAR DOOR. REPLACED RT & LT GEAR SKIDS AND SPACERS.