As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT IRS FAULT AT CRUISE ALTITUDE. T/S PER FIM 34-21 TASK 803, LEFT ADIRS BITE SHOWS 3 CURRENT FAULTS 34-21002, 34-21009 & 34-21037. ISDU STATUS 2 CODE SHOWS. REMOVED AND REPLACED LEFT ADIRU PER MM 34-21-01. OPS CHECKS GOOD. PERFORM LAND VERIFY PER MM 22-11-00, TEST PASS. AIRCRAFT REMAINS CAT IIIA, ANNUNCIATOR READS SAME. OK FOR SERVICE. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1479658 S/N OFF 00869.