As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE HAS FUEL LEAK TOWARDS THE FRONT LT SIDE OF ENGINE. FUEL IS RUNNING INSIDE THRUST REVERSER AND COMING OUT HOLE IN AFT SECTION OF THRUST REVERSER. RAN NR 1 ENG AND FOUND STEADY STREAM OF FUEL TO BE COMING FROM 'FUEL-OIL COOLER ASSY, SUSPECT INBD LARGE B-NUT. GOT 1 FULL TURN FROM FRONT ASSY 11-16' LINE FACING FWD. SECURED B-NUT ON FUEL OIL COOLER, RAN NR 1 ENG, NO LEAKS NOTED.