As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOTICED APPROXIMATELY 2000 FT DIFFERENCE BETWEEN NR 1 AND 2 MCDU DURING PROFILE DESCENT WITH F/O FLYING. SWITCHED AUTOPILOTS TO GET BACK ON PROFILE. AFTER BLOCK-IN IRU NR 2 SHOWED 14.8 DIRIFT & 15 GROUND SPEED. REPLACED THE NR 2 ADIRU, ACOMPLISHED TESTS IAW AMM 34-43-03-4. OPS CHECKED NORMAL AND ACCOMPLISHED AUTOLAND RTS ON FCC 1 AND FCC 2 IAW AMM 22-00-00-5 OPS CKS NORMAL NO DEFECTS NOTED RVSM AND LLM OPS NORMAL.