As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE "FUEL FILTER BYPASS" WARNING DURING CRUISE FLT, R & R NR 1 ENGINE DIFFERENTAL PRESSURE SWITCH AND MAIN ENGINE FUEL FILTER IAW 73-34-01-2. LEAK CHECKED GOOD. FILTER LIGHT STILL COMES ON WHEN FUEL LEVER ENGAGED. TROUBLESHOT IAW FIM CODE 73-31-01, FOUND FUEL FILTER DP SWITCH BAD. R & R NR 1 ENGINE FUEL FILTER DP SWITCH IAW MM 73-34-01-2, MM 73-34-01-5. LEAK AND OPS CHECKED GOOD.