What was found
DURING LINE MAINTENANCE CHECK, THE EMERGENCY LIGHTS TEST FAULTED AFT LEFT UNIT. REPLACED BATTERY PACK, OPS CHECK OK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING LINE MAINTENANCE CHECK, THE EMERGENCY LIGHTS TEST FAULTED AFT LEFT UNIT. REPLACED BATTERY PACK, OPS CHECK OK.