What was found
FUEL BYPASS LIGHT ILLUMINATED ON NR 1 ENGINE. PERFORMED ABNORMAL PROCEDURE, LIGHT DID NOT EXTINGUISH. ENGINE PARAMETERS NORMAL. CLEARED DESCENDING THRU 15,000. INSPECTED NR 1 ENGINE FUEL FILTER. FOUND SMALL NON-METALLIC DEBRIS. REMOVED AND REPLACED NR 1 ENGINE FUEL FILTER IAW CFM M/M 73-11-10. PERFORMED ENGINE RUN IDLE/FLIGHT IDLE CHECK PER JRH 13.2. OPS AND LEAK CHECKED GOOD. BYPASS LIGHT OPS GOOD.