What was found
FIRE SYST FAULT STATUS MESSAGE. PLACED ON MEL 26-00-1. CLEARED 1/21 BY: INTERROGATED MDC, FOUND LT ENG LOOP B FAILED OPEN AND LT ENG LOOP B FAILED SHORT ALONG WITH NUMEROUS ENG/CARGO SQUIB AND BOTTLE FAILED MSGS IN FAULT HISTORY ON 1/20/11. NO OTHER ASSOCIATED HISTORY. PERFORMED RESISTANCE CHECK OF LT AND RT ENG LOOP B IAW WM 71-50-01 AND 26-11-01. NO DEFECTS NOTED. BOTHER ENG LOOPS READ 27-29 OHMS. PERFORMED VISUAL INSP OF LT ENG FIRE LOOPS. NO DEFECTS NOTED. REMOVED FIDEEX IAW AMM TASK 26-10-01-000-801 AND REPLACED W/ SERVICABLE FIDEEX IAW AMM TASK 26-10-01-400-801 AS A PRECAUTIONARY MEASURE. OPS CHECK GOOD. FIDEEX PLACED IN QUARANTINE PROGRAM. CLEAR MEL. RETURNED TO SERVICE.