As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, HEARD A BANGING NOISE IN THE AREA OF THE FORWARD GALLEY DOOR AND UNABLE TO MAINTAIN PRESSURIZATION. FLIGHT RETURNED TO HOU WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND AESTHETIC SEAL HANGING OUTSIDE THE GALLEY DOOR, REMOVED SEAL. AIRCRAFT RETURNED TO SERVICE.