As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS IN BASE MAINTENANCE: DURING RAM AIR TURBINE (RAT) MOTERING TEST FOUND HYD-PUMP HEAVILY LEAKING (HAS CRACK AT THE MOUNTING BOLT ON TOP). MAINTENANCE REPLACED RAM AIR TURBINE (RAT) PUMP. MOTORING AND LEAK TEST GOOD IAW B777-3 AMM 29-21-02, 29-21-00.