As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CENTER FCC FAILS INTERFACE TEST 04. FOUND WIRE W011-770-22 BROKEN AT CONNECTOR D479. REPINNED WIRE REF BOEING STANDARD PRACTICES MANUAL 20-10-13. CTR FCC TEST NORMAL. ACP CAT III TEST PER MM, TEST PASSED. AIRCRAFT RETURNED TO CAT III STATUS