As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING OVERNIGHT CHECK AND THE EO 8772004 ISSUED TO REPLACE THE TRANSFER GEARBOX (TGB) ON BOTH ENGINES, MAINTENANCE PERSONNEL DETECTED OIL LEAK IN RIGHT TGB SLEEVE; SO THE RIGHT TGB SLEEVE SEALS WERE REPLACED IAW AMM DMC-B787-A-G72-01-00A-520A-A AND TEST 4 PART POWER LEAK TEST WAS PERFORMED IAW AMM DMC-B787-A-G71-00-00-13A-364A-A, TESTED CORRECT.