As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI OUT, A PASSENGER IN ROW 23 REPORTED AN ELECTRICAL ODOR. ODOR WAS CONFIRMED BY FLIGHT ATTENDANTS. AIRCRAFT RETURNED TO GATE. AIRCRAFT GROUNDED. MAINTENANCE FOUND A LIGHT SOCKET BURNED ABOVE SEAT 17B. REMOVED AND REPLACED THE SOCKET IAW AMM 33-21-03.