As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT EMERGENCY LIGHTS CAME ON FOR NO APPARENT REASON THEN TURNED OFF AFTER SEVERAL MINUTES, THEN BACK ON FOR 10 SECONDS, THEN OFF FOR REMAINDER OF FLIGHT. REMOVED AND REPLACED GEN I/O MAU 2 MODULE 9 IAW EMB 170 AMM 31-46-01. OPS CHECK GOOD.