What was found
AIRCRAFT WAS NOT GROUNDED: WHILE PERFORMING PS CHECK FOUND EMERGENCY POWER SUPPLY UNIT (EPSU) AT 13WL INOPERATIVE. REPLACED EMERGENCY POWER SUPPLY UNIT (EPSU) AT 13WL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS NOT GROUNDED: WHILE PERFORMING PS CHECK FOUND EMERGENCY POWER SUPPLY UNIT (EPSU) AT 13WL INOPERATIVE. REPLACED EMERGENCY POWER SUPPLY UNIT (EPSU) AT 13WL.