As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MDIS 920 24-30 0653 02MAY19 CGN OPEN U DURING INSTALLATION OF THE LT EEC, IAW AMM 73-21-07-4-0-R, THE EEC CASING TOUCHED THE LT TRU CABLE AND CAUSED A SHORTAGE. WHICH CAUSED SPARKING WITHIN THE CABLELOOM. REF TO WRI 73-20/0647 R&R LT EEC SUPERVICORY AND LIMITER UNIT IAW AMM 73-21-07-4. CHECKED OK. PART DECLARED UNSERVICEABLE USING TRANSACTION CODE/ ECC FOUND DAMAGE (BURNED MARKS) DUE TO SHORTAGE WITH WIRES LOOM.