What was found
DURING HEAVY MAINTENANCE, EPSU 12WL FAILED TEST. REPLACED EPSU 12WL. OPS CHECK GOOD IAW AMM 33-51-38-000-001-A AND 33-51-38-400-001-A.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING HEAVY MAINTENANCE, EPSU 12WL FAILED TEST. REPLACED EPSU 12WL. OPS CHECK GOOD IAW AMM 33-51-38-000-001-A AND 33-51-38-400-001-A.