As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLIGHT SHUTDOWN AT 34,000FT, IN A SLIGHT DESCENT RT ENGINE RPM ROLLED TO ABOUT 44 PERCENT ALONG WITH "POPPING SURGING" VIBRATION. FOUND 5TH STAGE CHECK VALVED LOCKED IN CLOSE POSITION. REMOVED AND REPLACED NR 2 ENG 5TH STAGE CHECK VALVED PER MM.