As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE CREW REPORTED SMOKE IN THE FLIGHT DECK AND CABIN. MAINTENANCE PERSONNEL PERFORMED A BORESCOPE INSPECTION AND FOUND NO DISCREPANCIES, DURING AN EXTERNAL VISUAL INSPECTION OF THE TURBINE SECTION THE NR 1 CARBON SEAL WAS FOUND TO BE LEAKING AND WAS REPLACED. A SATISFACTORY ENGINE RUN AND LEAK CHECK WAS PERFORMED. AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE