As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JFK/IAD - FLT 6593 - DURING CRUISE AT 1300 HOURS ON 5-21-97, MADE A SCHEDULED LANDING WITH ONE DISCREPANCY WHICH WAS LT ENGINE FIRE DETECTION CAPTION INTERMITTENT ILLUMINATED IN-FLIGHT. AIRCRAFT LANDED AND WENT TO THE GATE AT IAD WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED LT FIRE DETECTION UNIT, OPS CHECK OK. AIRCRAFT RELEASED AND RETURNED TO SERVICE. (X)