What was found
EMERGENCY LIGHT TEST FAILED, REF 3SVC. MSG. "EPSU BATTERY AFT L" DISPLAYED. REPLACED EPSU AFT BATTERY, SYSTEM TEST GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
EMERGENCY LIGHT TEST FAILED, REF 3SVC. MSG. "EPSU BATTERY AFT L" DISPLAYED. REPLACED EPSU AFT BATTERY, SYSTEM TEST GOOD.