As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUPPORT TASK EMERGENCY LIGHT INOPERATIVE AT RT WING AFT LIGHT WHILE TROUBLE SHOOTING FOUND EMERGENCY EXIT LIGHT BATTERY PACK AFT TO BE INOPERATIVE. REMOVED & REPLACED BATTERY PACK IAW BOEING 7 37-700/800/900 AMM TASK 33-51-06-960-805. OPERATION CHECKED GOOD IAW BOEING 737-700/800/900 AMM TASK 33-51-06-960-805