As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROTATION, AIRCRAFT YAWED TO THE LEFT ACCOMPANIED BY A LOUD AIR NOISE AND VIBRATION FELT IN THE COCKPIT. NO MESSAGES WERE INDICATED ON ECAM OR STATUS PAGE. OPERATING PROCEDURE WAS FOLLOWED AND THE AIRCRAFT RETURNED TO SEA WHERE AN UNEVENTFUL LANDING TOOK PLACE. THE NR 1 ENGINE WAS REPLACED.