As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND FUEL LEAKING FROM FUEL / OIL HEAT EXCHANGER DRAIN LINE ON NR 1 ENGINE. NUMBER ONE ENGINE MAIN OIL / FUEL HEAT EXCHANGER DEFERRED FOR 75 CYCLES REF AMM 71 71 00 200 801 PARA F (1)(B)1. LEAKAGE RATE IS 10 DROPS PER MINUTE WITH ENGINE RUNNING AND NO LEAKAGE WITH ENGINE STATIC. THRESHOLD RATE IS 60 DROPS PER MINUTE. REPLACED SERVO HEATER IAW 73 11 07 000 801 FOO AND MAIN OIL FUEL HEAT EXCHANGER IAW 79 21 02 000 801 FOO. GROUND VERIFICATION AND LEAK CHECKS GOOD.