What was found
NR 2 ENGINE FILTER BYPASS LIGHT ILLUMINATED. ACFT GROUNDED. CHECKED AND RELEASED IAW MEL 73-4B ON NR 2 FUEL FILTER DIFFERENTIAL PRESSURE WARNING SYS. FUEL FILTER DRAIN PLUG REMOVED, NO CONTAMINATION FOUND IN FUEL. 1 FLIGHT PERMITTED PRIOR TO FILTER REPLACEMENT. RAN NR 2 ENGINE, LEAK CHECK GOOD IAW AMM 71-00-00. R & R NR 2 ENGINE FUEL FILTER AS REQUIRED IAW MEL 73-4B, REF AMM 73-11-02. NO CONTAMINATION FOUND. NR 2 ENGINE FUEL FILTER DIFFERENTIAL PRESSURE SWITCH BYPASSED IN CDU WITH NO ASSOCIATED FAULTS. R & R NR 2 ENGINE FUEL FILTER DIFFERENTIAL PRESSURE SWITCH, REF AMM 73-34-01. GROUND VERIFICATION, OPS CHECKS & LEAK CHECK GOOD. THIS CLEARS MEL 73-4B.