As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT IRS FAILED AFTER T/O REF AMM TASK 34-21-01-400-801, REMOVED AND REPLACED LEFT ADIRU. OPERATIONAL CHECK NORMAL. LAND VERIFY COMPLETED SATISFACTORILY. AC REMAINS FULL CAT CAPABLE. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1969459 SN OFF 5529 UNIT, ADIRU, AI OFF 60-3421-9-0001 5529 ON 60-3421-9-0001 5377