What was found
RIGHT ENGINE FIRE LOOP 2 FAILS TEST. *S/D* ACFT EXPERIENCED A CHRONIC RIGHT ENGINE FIRE LOOP STATUS MESSAGE INFLIGHT, OK ON GROUND. SYSTEM WIRING WAS EXTENSIVELY CHECKED AND SEVERAL SYSTEM COMPONENTS WERE REPLACED. PROBLEM WAS ATTRIBUTED TO THE LWR AND/OR LWR AFT ENGINE FIRE LOOP. IT IS SUSPECTED THAT THESE LOOPS WERE FAILING DUE TO ENGINE VIBRATION. AFTER REPLACEMENT OF THESE LOOPS, THE ACFT HAS OPERATED NORMALLY.