As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: UPPER EMERGENCY LIGHT AT ROW 12DEF INOPERATIVE. TROUBLESHOT ROW 12DEF UPPER EMERGENCY LIGHT AND FOUND CONNECTOR LOOSE AT THE LIGHT. RESECURED CONNECTOR AND PERFORMED A SATISFACTORY OPERTIONAL CHECK. PER B737-NG AMM 33-51-03-960-805.