As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN LIGHTS EMERGENCY LIGHTING CAPACITY TEST FAILED. REPLACEMENT OF EPSU BATTERY. 10WL IS REQUIRED. A3MB-33-3-6013 SEQ: 633 ZONE:200 EPSU BATTERY 12WL FAILED ON EMERGENCY LIGHTING BATTERY CAPACITY TEST AND REQUIRE REPLACEMENT. PERFORMED EPSU BATTERY REPLACEMENT 12WL, IAW AMM:33-51-38-000-002/ WORK RECORDED ON UAL LOGPAGE# 6111818 33-51-38-400-002 REV. 122. TEST SATIFACTORY.