As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIFTEEN MINUTES INTO FLIGHT, NR 2 INS FAULT. QRH PROCEDURES, ALSO INDICATIONS OF LOSS OF ADC 2. NO FLIGHT DIRECTOR OR SPEED TAPE ON FIRST OFFICERS FLIGHT DISPLAY SELECTING ADC 2. NON-RVSM RESULTING IN DIVERT. DUPLICATED DISCREPANCY FOUND NR 2 IRU INOPERATIVE. ISDU SHOWS FAULT CODE 1. R & R NR 2 IRU IAW AMM 34-25-34-04. OPERATIONS CHECKED NORMAL. ACFT LLM & RVSM CAPABLE. OK FOR SERVICE.