As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, THE LEFT IGNITION LIGHT ILLUMINATED WITH BOTH POWER LEVERS FORWARD OF YELLOW TAPE. AS PER MAINTENANCE CONTROL, ALL ENGINE INDICATIONS NORMAL. AIRCRAFT RETURNED TO DTW. MAINTENANCE REPLACED LEFT AND RIGHT AUTO IGNITION PRESSURE SWITCHES. OPS CHECK GOOD. IAW AMM 74.