As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AT FL 410 ENCOUNTED SEV TURB, ENG 2 WENT TO IDLE AND NR 3 FLAMED-OUT, COULD NOT MX ALT OR A/S DESC TO FL 280. ENG NR 2 CAME BACK AFTER 2 MIN AND NR 3 WAS RESTARTED. PER CREW BRIEF THIS WAS RELATED TO TURBULANCE. INSPECTED BOTH INLET AND EXHAUST, PER DEBRIEF WITH I/B CREW BOTH RAN OK FOR LAST HOUR OF FLT.