As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB NR 2 ENGINE EXPERIENCED AN OVERTEMP WITH AUDIBLE COMPRESSOR STALL. THE ENGINE WAS SHUTDOWN, APPROXIMATELY 120,000 POUNDS OF FUEL WERE DUMPED AND THE FLIGHT RETURNED TO BKK. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND SEVER DAMAGE IN THE TURBINE AREA. THERE WAS ALSO DOWNSTREAM DAMAGE TO THE TRAILING EDGE FLAPS, HORIZONTAL STABILIZER AND ELEVATOR. THE NR 2 ENGINE HAS BEEN REPLACED AND SUCCESSFULLY TESTED. THE AIRCRAFT IS AWAITING COMPLETION OF STRUCTURAL REPAIRS.