As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SYSTEM FAULT LIGHTS FOR NR 1 ENGINE FIRE DETECTION SYSTEM ILLUMINATED INTERMITTENTLY AFTER TAKEOFF. RAN CHECK LIST. FIRE TEST PRODUCED ABNORMAL INDICATIONS FOR ENGINE NR 1. SHUT DOWN ENGINE NR 1 AS A PRECAUTION. RETURNED TO RDU. CLEARED WATER FROM D4180J AT PYLON AND REINSULATED WIRES LAYING IN THE WATER IN BO OF D4180J. TEST NORMAL PER M/M 26-11-02.