What was found
THE CREW REPORTED A NR 2 ENGINE FIRE DETECT FAIL MESSAGE AFTER TAKEOFF. THE ACFT RETURNED TO ORD AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE NR 2 ENGINE FIRE DETECTOR. OPS CHECKED GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
THE CREW REPORTED A NR 2 ENGINE FIRE DETECT FAIL MESSAGE AFTER TAKEOFF. THE ACFT RETURNED TO ORD AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE NR 2 ENGINE FIRE DETECTOR. OPS CHECKED GOOD.