As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE FIRE DETECTION LOOP INOPERABLE. CORRECTIVE ACTION: C/W A220 EFIM SOLUTION 1-4615. CONNECTOR A243P1 A/A1 AND A/C1 BOTH SHOW A SHORT. DURING GVI OF NR 2 ENGINE FIRE LOOP SYSTEM FOUND, "STARTER MAGNETIC CHIP COLLECTOR PROBE" FELL OUT OF VALVE BODY AND LAYING ON TOP OF THE DETECTOR "LOOP B JUNCTION BLOCK" CAUSING A SHORT TO GROUND. STARTER CHIP DETECTOR PROBE RE-INSTALLED, PER A220 AMP80-11 NOW FIRE LOOP FAULT CLEARED AND NOT ACTIVE ANY LONGER. PLACARD MEL REMOVED.