As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"FIRE/OVHT SYS" EICAS CAUTION MESSAGE AFTER ENGINE NR 1 STARTED. ACCOMPLISHED QRH PROCEDURE AND MESSAGE DISAPPEARED PERFORMED ENGINE FIRE DETECTION SYSTEM TEST IAW B767 AMM 26-11-00. COULD NOT DUPLICATE. A/C REMAINS NO ETOPS. LP 39190-25/1 RETURNED TO SERVICE .