What was found
DURING SERVICE CHECK, FOUND EPSU BATTERY DEAD AT DOOR 4L. REPLACED EPSU BATTERY AT DOOR 4L.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING SERVICE CHECK, FOUND EPSU BATTERY DEAD AT DOOR 4L. REPLACED EPSU BATTERY AT DOOR 4L.