What was found
DURING ROUTINE MAINTENANCE THE LEFT AND RIGHT UPPER EMERGENCY LIGHTS WERE FOUND TO BE INOPERATIVE.MAINTENANCE REPLACED THE #4 BATTERY POWER SUPPLY.OPERATIONAL CHECKS WERE GOOD.THE AIRCRAFT WAS RELEASED FOR SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING ROUTINE MAINTENANCE THE LEFT AND RIGHT UPPER EMERGENCY LIGHTS WERE FOUND TO BE INOPERATIVE.MAINTENANCE REPLACED THE #4 BATTERY POWER SUPPLY.OPERATIONAL CHECKS WERE GOOD.THE AIRCRAFT WAS RELEASED FOR SERVICE.