As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TEST OF EMERGENCY LIGHT BATTERY PACK REPLACEMENT, W/C 64-3350-1-3800 STEP 1B FOUND BATTERY AT RT STA 401 WL 204 RBL 95 FAILED TEST. REMOVED AND REPLACED BATTERY POWER SUPPLY ASSY PER AMM 33-51-0 7 STEP 5. P/N OFF D717-02-030 S/N OFF 6448 AND P/N ON D717-02- 030 S/N ON 5254. OPERATIONAL CHECK GOOD.