What was found
AIRCRAFT WAS NOT GROUNDED: FAULT "EPSU COMM EMER R" FOUND DURING P.S. CHECK. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT 12WL PER AMM 33-51-38.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS NOT GROUNDED: FAULT "EPSU COMM EMER R" FOUND DURING P.S. CHECK. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT 12WL PER AMM 33-51-38.