As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING LEAK CK OF REPLACEMENT OF NR 2 ENGINE NOTED HMU TO BE LEAKING AT THE TOP SURFACE FITTING/ADJUSTING SCREW CAP JUST AFT OF THE SUPPLY FUEL LINE. LEAK IS COMING FROM THE PARTING LINE BETWEEN HMU AND CAP REPLACED NR 2 ENGINE HMU PER AMM73 21 10 400. OPS AND TESTS CHECK GOOD NO LEAKS.