As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IND - FLT 4390 - EN ROUTE TO ORD FROM CVG CREW DIVERTED A/C INTO IND DUE TO SMOKE IN CABIN. CREW LANDED A/C SAFELY. FOUND READING LIGHT AT 7A BULBS AND TRANSFORMER BURNED. DEFERRED READING LIGHTS PER MEL AND A/C WAS RETURNED TO SERVICE. R/I'D READING LIGHT ASSY FOR SEAT 7A. PERFORMED OPERATIONAL CHECK SATISFACTORILY. REMOVED MEL AND RETURNED A/C TO SERVICE. (M)