As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6225 - IAD-BOS - AIRCRAFT MADE AN UNSCHEDULED LANDING DUE TO PASSENGER DOOR SEAL FAILED AND AIRCRAFT WOULD NOT HOLD PRESSURIZATION. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REINSTALLED DOOR SEAL INTO CHANNEL, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)