As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND #2 MAIN OIL/FUEL HEAT EXCHANGER PAD DRAIN. LEAKING. GROUNDED - YES. REMOVED AND REPLACED #2 ENG MAIN OIL/FUEL HEAT EXCHANGER REF B737-900 AMM 79-21-02-400-801-F00 LEAK CHECK AND OPS CHECK GOOD REF AMM 71-00-00-700-801-FOO TEST 3A.