As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB OUT, NR 1 INS WARNING LIGHT CAME ON. ON CLIMB OUT NR 1 INS WARNING LIGHT CAME ON. NR 1 ADI AND HEADING FAILED. SELECTED NR 3 ATTITUDE AND COMPASS. APPROX 3 MINUTES LATER NR 3 INS WARNING LIGHT CAME ON. BOTH SCREENS WENT BLANK AND SHUT DOWN. REMOVED AND REPLACED NR 1 AND NR 3 INS NAVIGATION UNIT IAW MM 34-41-03/ 401 AND 501. OPS CHECK OK.