As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS FAILED OPS TEST. TROUBLESHOT IAW FIM 33-51-00-810-804 AND FOUND ESPU BATTERY PACK NR 3 & NR 4 TO BE UNSERVICABLE. REPLACED BATTERY PACK IAW 33-51-17-400-801. PERFORMED OPS CHECK TASK 33-51-17-710-801, OPS TESTED GOOD OK TO CLOSE PANEL 273ALC. INSTALLED PANEL 273ALC THAT WAS SERVICEABLE IAW AMM 25-26-05-400-804. PERFORMED OPS TEST OF EMERGENCY LIGHTS IAW AMM 33-51-00-710-802.