What was found
AIRCRAFT WAS GROUNDED: DURING PERIODIC SERVICE CHECK FOUND EMERGENCY POWER SUPPLY UNIT AFT LEFT INOPERATIVE. REMOVED AND REPLACED POWER SUPPLY FOR EMERGENCY LIGHTS PER AMM 33-51-38.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS GROUNDED: DURING PERIODIC SERVICE CHECK FOUND EMERGENCY POWER SUPPLY UNIT AFT LEFT INOPERATIVE. REMOVED AND REPLACED POWER SUPPLY FOR EMERGENCY LIGHTS PER AMM 33-51-38.