As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L2 DOOR & LEFT REAR AREA EMERGENCY LIGHTS EXTINGUISHED BEFORE 15 MINUTES, DURING COMPLETION OF T/C 78233001. EMERGENCY LIGHT SWITCH OPS CHECKED AND BATTERY PACKS CHECKED. ACFT GROUNDED. REMOVED AND REPLACED BATTERY PACK IAW AMM 33-51-06. OPS CHECKED GOOD.