As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERTED, ACFT WAS GROUNDED. FLIGHT CREW REPORTED WHILE AT 38,000 THE RT ENGINE ROLLED BACK FOLLOWED BY AN ECAM MESSAGE INDICATING THE RT ENGINE STALLED. THE ACFT DESCENDED TO FL 290 AND THE RT ENGINE ROLLED BACK UP AND STARTED TO RUN NORMAL. THE ACFT DIVERTED. MAINTENANCE REPLACED THE NR 2 ENGINE HYDRO MECHANICAL UNIT, HMU AND THE FUEL PUMP IAW AMM 73-11-10 AND 73-21-10. A SATISFACTORY LEAK AND OPS CHECK WAS ACCOMPLISHED.