As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOWER AFT BODY OVERHEAT LIGHT ILLUMINATED IN FLIGHT AT FL250. ENG A/ICE HAD BEEN ON FOR SEVERAL MINUTES PRIOR AND TURNED OFF PRIOR TO GOING TO QRH. LIGHT EXTINGUISHED PER QRH PROCEDURE, REPEAT WRITE-UP. REMOVED AND REPLACED FIRE DETECTION CONTROLLER PER MM 26-14. OPS CHECK NORMAL. WOULD NOT DUPLICATE.