As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EXTENSION AND RETRACTION EICAS MESSAGE GEAR DOOR DISPLAYED AND DOORS AMBER LIGHT ON WITH LANDING GEAR INDICATING DOWN. RT GEAR DOOR ONLY. CYCLED MAIN GEAR DOORS IAW AMM 32-12-00. NO EICAS MESSAGE PRESENT. MAIN GEAR DOORS OPERATE NORMALLY ON THE GROUND. NO DEFECTS NOTED.