What was found
DURING CRUISE, THE NR 2 INS BECAME UNRELIABLE. THE NR 3 INS WAS ALREADY ON MEL. FLIGHT DIVERTED TO BOS. REPLACED THE NR 2 INS COMPUTER.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING CRUISE, THE NR 2 INS BECAME UNRELIABLE. THE NR 3 INS WAS ALREADY ON MEL. FLIGHT DIVERTED TO BOS. REPLACED THE NR 2 INS COMPUTER.