As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS INTERMITTENT ODOR NEAR CEILING. SMELLS LIKE RUBBER. HAD FLIGHT ATTENDANT TURN OFF ALL LIGHTS, ODOR NEVER CAME BACK. REMOVED AND REPLACED AFT GALLEY CEILING LIGHTS BALLAST ASSEMBLIES IAW AMM:33-24-11. OPS CHECKS GOOD.