As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACE TEST FAILED SHOW RT ACE INTERNAL FAULT. MESSAGE 27-13003, 27-13002, 27-13001 & 27-13000 DISPLAYED AFTER ACE MONITOR TEST PASS INDICATED ON MX PAGE. THIS CONDITION OK IAW MM. ACCOMPLISHED ACE LRU REPLACED TEST TO UNLATCH FAULTS. ALL LRU REPLACEMENT TESTED OK. ACCOMPLISHED ACE MONITOR TEST AGAIN, ALL TESTS PASSED.