As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ROC - DURING TRANSIT CHECK WHILE ACCOMPLISHING OPERATIONAL CHECK OF EMERGENCY LIGHTING SYSTEM, MAINTENANCE FOUND THE FORWARD ENTRYWAY EMERGENCY EXIT LIGHTS DIM AND AFTER 30 SECONDS OF OPERATION, LIGHTS WENT OUT. MAINTENANCE REMOVED AND REPLACED THE BATTERY PACK IN THE M1133 POWER SUPPLY. OPERATIONAL CHECK GOOD. (M)