As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VERY LOUD SQUEALING AND WOOSHING NOISE COMING FROM MAIN CABIN DOOR AFTER TAKE OFF-C/A-FOUND OBJECT ON DOOR SEAL AND STICKER. REMOVED FROM MAIN CABIN DOOR SEAL AND PERFORMED PRESSURIZATION CHECK IAW 21-31-00. OPS CHECK GOOD NO SQUEELING SOUND NOTED.