As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT CABIN EMERGENCY LIGHTING CIRCUIT BREAKER (H5) TRIPPED. CREW RESET PER COCKPIT OPERATING MANUAL AND CIRCUIT BREAKER TRIPPED AGAIN APPROXIMATELY TEN MINUTES LATER. CIRCUIT BREAKER WAS LEFT TRIPPED FOR REMAINDER OF FLIGHT. MAINTENANCE TEST OF EMERGENCY LIGHT SYSTEM DISPLAYED UNIT AFT LT. MAINTENANCE REPLACED AFT LEFT EMERGENCY POWER SUPPLY UNIT. OPERATIONAL CHECK OK.