What was found
FIRE SYS FAULT STATUS MSG. PLACED ON MEL 26-00-1. RETURNED TO SERVICE. MEL CLEARED 5/17. UPON INTERROGATION OF THE MDC FAULT FOUND TO BE R ENG LOOP B STATUS FAILED/ WIRING. REMOVED AND REPLACED SENSING ELEMENT A240 IAW CRJ 700 AMM TASKS 26-11-01-000-802 STEPS 1-4A. (1), (3), (5), (6). STEPS 4A. (2) AND (4) WERE NOT APPLICABLE TO SENSING ELEMENT A240. TASK 26-11-01-400-802 STEPS 1-4A. (1)-(3), (6), (8) AND STEP 5 A.-E. STEPS 4A. (4), (5) AND (7) WERE NOT APPLICABLE TO SENSING ELEMENT A240. OPS CHECK GOOD. NO DEFECTS NOTED. CLEAR MEL. RETURNED TO SERVICE.