What was found
DURING LINE MAINTENANCE TEST OF THE EMERGENCY LIGHTING SYSTEM, RECEIVED EPSU COMM EMER LIGHT AND EPSU BATT EMER LIGHT MESSAGES. REPLACED BATTERY PACK AT DOOR 1L, OPERATIONAL CHECK OK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING LINE MAINTENANCE TEST OF THE EMERGENCY LIGHTING SYSTEM, RECEIVED EPSU COMM EMER LIGHT AND EPSU BATT EMER LIGHT MESSAGES. REPLACED BATTERY PACK AT DOOR 1L, OPERATIONAL CHECK OK.