As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EPSU SYSTEM TEST FAILED. EPSU BATTERY PACK FROM LEFT EMER. EXIT (11WL) AND AFT EXIT (13WL) FOUND TO BE DISCHARGED. SDR REQUIRED.-VERIFIED LTPR NR#5001111446-0010 BATTERY PACKS (11WL AND 13WL) WAS REPLACED I.A.W AMM 33-51-38-000/400-002-A REV.70. TEST SATISFACTORY. SDR GENERATED.