What was found
DURING HEAVY MAINTENANCE, THE LEFT EPSU FAILED SELF TEST. REMOVED AND REPLACED EPSU IAW AMM 33-51-36-000-001, & 33-51-36-420-050-A. OPS CHECKED GOOD IAW AMM 33-51-38-740-050-B.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING HEAVY MAINTENANCE, THE LEFT EPSU FAILED SELF TEST. REMOVED AND REPLACED EPSU IAW AMM 33-51-36-000-001, & 33-51-36-420-050-A. OPS CHECKED GOOD IAW AMM 33-51-38-740-050-B.