What was found
NR 2 ENG, NO FIRE DETECTION (A LOOP FAILURE, ACFT DEPARATED WITH MEL 26-12-01-1, NR 2 ENGINE FIRE DETECTION SYS B LOOP INOP. DEF NR 427111, CLEANED AND SECURE C/P'S DH3 AND DH4 AT R SIDE ENG CORE FIRE SENSING LOOPS. CLEANED AND SECURED C/P'S D4989P (1) D4953P OF ENG NR 2 PYL R&R E2 ENG FIRE CONTROL MODULE IAW MM 26-12-20-04. RAN & TAXIED ACFT FOR 50 MIN UP TO T/O RUN ALL IND NORMAL. THIS CLEARS 427111. PLACARD REMOVED.