As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYS - TCAS EICAS MESSAGE TCAS FAIL ON EHSI NO CHANGE IF OTHER TRANSPONDER SELECTED OR IF TA ONLY SELECTED. RESET TCAS COMPUTER ALIGNED IRU'S TESTED BOTH 1 AND 2 TCAS AND BOTH TEST OK- NO EICAS MESSAGE AND NO FAIL ON EHSI-TCAS OK FOR SERVICE.