What was found
DURING PRE-FLT INSPECTION, OVERHEAT/FIRE, ENG 1 OVERHEAT & ENG NR 1 T-HANDLE FAILED TO ILLUMINATE DURING TEST. ACFT GROUNDED. PERFORMED NR 1 ENG FIRE DET LOOP RESISTANCE TEST, RESISTANCE CHECKS OF A AND B LOOPS WITH IN LIMITS, SHOOK DOWN B LOOP OF FAN AND CORE SECTIONS WITH NO CHANGE IN READINGS, REF 26-11-00-010-001 AND WDM 26-11-11, AS PRECAUTIONARY R & R NR 1 ENG CORE B LOOP RT SIDE REF AMM 26-11-01, OPS NORMAL REF 26-11-00.