As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE AT FL340, EXPERIENCED A LOUD VIBBRATION FROM THE NR 1 ENGINE AND A POWER ROLL BACK. FADEC ATTEMPTED ONE RE-LIGHT AND HEARD AN INCREASING, LOUDER VIBRATION AND PROCEEDED WITH A PRECAUTIONARY ENGINE SHUTDOWN WITH NO EXCEEDED ENGINE PARAMETERS NOTE. NORMAL SINGLE ENGINE LANDING AND TAXI. R & R NR 1 ENGINE IAW MM 71-00-01-900-801. OPS & LEAK CHECKED GOOD.