As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT THROUGH 350, #1 ENGINE FAIL, EGT SPIKE, SHUTDOWN. SUCCESSFUL XBLEED RESTART, VIBRATION WHEN THRUST ADDED FOR APPROACH. GROUNDED - YES. PER TSR 705027, ACCOMPLISHED #1 ENGINE 5TH STAGE CHECK VALVE INSPECTION PER B737-800 AMM 36-11-02/601. FOUND CHECK VALVE SEIZED IN FULLY OPEN POSITION. REPLACED CHECK VALVE PER AMM 36-11-02/401.