As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF AT GEAR RETRACTION NOTICED LOUD AIR NOISE AND VIBRATION ON NR 1 ENGINE. RETURNED TO PVD AND MADE AN UNEVENTFUL LANDING. INSPECTED ENG, FOUND THREE FAN BLADES BENT DUE TO BIRD STRIKE. REPLACED FAN SET OF BLADES PER BOEING MM.