What was found
DURING THRU-FLIGHT CHECK, THE EMERGENCY LIGHTS SYSTEM FAILED TO TEST. REPLACED EPSU (13WL) AT DOOR 3L, OPERATIONAL CHECK OK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING THRU-FLIGHT CHECK, THE EMERGENCY LIGHTS SYSTEM FAILED TO TEST. REPLACED EPSU (13WL) AT DOOR 3L, OPERATIONAL CHECK OK.