As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT 185 - DURING CRUISE, RED EQUIPMENT ACCESS ON OVERHEAD PANEL ILLUMINATED WITH ASSOCIATED EICAS MESSAGE. SOUND OF ELECTRICAL ARCING WAS NOTED BY CREW. LIGHT ALSO ILLUMINATED NOSE UNSAFE GEAR LIGHT. LANDED ORD WITHOUT INCIDENT. REPLACED LEFT UNIT. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)