What was found
AIRCRAFT NOT GROUNDED. EMERGENCY POWER SUPPLY UNIT FAILED TEST AT 11WL. REMOVED AND REPLACED EPSU BATTERY IAW 33-51-38. OPERATIONAL CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT NOT GROUNDED. EMERGENCY POWER SUPPLY UNIT FAILED TEST AT 11WL. REMOVED AND REPLACED EPSU BATTERY IAW 33-51-38. OPERATIONAL CHECK GOOD.