What was found
DURING LINE MAINTENANCE, THE LEFT EMERGENCY LIGHTS POWER SUPPLY/BATTERY PACK FAILED SYSTEM TEST. REPLACED THE POWER SUPPLY AND OPERATIONAL CHECK OK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING LINE MAINTENANCE, THE LEFT EMERGENCY LIGHTS POWER SUPPLY/BATTERY PACK FAILED SYSTEM TEST. REPLACED THE POWER SUPPLY AND OPERATIONAL CHECK OK.