As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, THE CREW REPORTED HEARING A LOUD BANG FOLLOWED BY AIRFRAME VIBRATION. THE FLIGHT RETURNED TO BOS AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE PERSONNEL FOUND THAT THE OXYGEN SERVICE FAIRING PANEL HAD DEPARTED THE AIRCRAFT. THE PANEL WAS REPLACED AND THE AIRCRAFT WAS RETURNED TO SERVICE.