As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED R1 DOOR LEAKING AIR AND SQUEALING LOUDLY DURING FLIGHT. AIRCRAFT HAD TROUBLE MAINTAINING NORMAL PRESSURE. EMERGENCY WAS NOT DECLARED AND AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED R1 DOOR AND FOUND DEBRIS IN SEAL. MAINTENANCE CLEANED SEAL PER EMB AMM AND OPS CHECKED GOOD.