As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: MAJORITY OF THE EMERGENCY CABIN LIGHTS INOPERATIVE. (ONLY THE BACK EMERGENCY LIGHTS PARTIALLY WORK) REPLACED FORWARD EMERGENCY POWER SUPPLY UNIT BATTERY AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK OF THE EMERGENCY LIGHTING SYSTEM PER AMM 33-51-38 WITH NO ISSUES NOTED.