As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE TREND DATA SHOWS A SUDDEN SHIFT IN CRUISE DELTA FUEL FLOW INDICATION ERRORS ARE SUSPECT. ACFT GROUNDED. R & R FUEL FLOW TRANSMITTER, REF AMM 73-31-01. ACCOMPLISHED ENGINE RUN -EEC BITE CHECK, TEST GOOD. PERFORMED IDLE LEAK CHECK, NO LEAKS NOTED.