As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUPPORT TASK BATTERY PACK BAD AT STATION 727C. REMOVED BATTERY PACK MODEL AD-D717-01-100, SN 63440 & INSTALLED NEW BATTERY PACK MODEL AD-D717-01-100, SN 147026. OPERATIONS CHECKED EMER LIGHTS GOOD IAW AMM 33- 51-00. REMOVED & REINSTALLED RETURN AIR GRILLE IAW AMM 2 1-23-03.