As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
38K FEET, AUTO PILOT COMMANDING DECENT RATE - LT ENGINE BEGAN UNCOMMANDED SPOOL DOWN. NO PRIOR INDICATIONS ON PANEL. DURING EMERGENCY SHUTDOWN PROCEDURES N1 AND N2 INDICATIONS CONFIRMED, 36K, 30K FEET SLIGHT VIBRATION FELT. AT 30K FEET VIBRATION STOPPED. IN APPROXIMATELY 15 PERCENT. WHEN BELOW 25K FEET RESTART ATTEMPTED. NO N2 ABORTED START ATTEMPT. DECLARED EMERGENCY, APPROACH AND LANDING UNEVENTFUL. ENGINE DISASSEMBLED 5/6/09 IN REPAIR STATION. DISASSEMBLY REVEALED A TOWER SHAFT AND 2ND REDUCTION BALL FAILURE.