As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING T/C 78233008, FOUND LEFT AFT OVERWING EXIT EMERGENCY BATTERY PACK INOP. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY BATTERY PACK AT L, 7-8 WINDOWS AFT OF AFT OVERWING EXIT, FOOT PANEL REF AMM 33-51-06. OPS CHECK GOOD. OK FOR SERVICE.