As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE TAIL SECTION WALKWAY, LOWER EMERGENCY LIGHTS ARE INOPERATIVE. MAINTENANCE FOUND THAT THE B5-200 POWER SUPPLY AND BATTERY PACK ARE BAD. REPLACED THE B5-200 POWER SUPPLY AND BATTERY PACK REF AMM 33-51. LIGHT OPERATION NOW CHECKS GOOD.