As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AS SOON AS WEIGHT OFF WHEELS, MAIN CABIN DOOR MAKES A LOUD RUSHING AIR SOUND. NOT ABLE TO PINPOINT A SOURCE AS THE SOUND WAS EVENLY LOUD AND NOTICABLE AROUND THE WHOLE DOOR. AIRCRAFT SEEMED TO PRESSURIZE/DEPRESSURIZE NORMALLY. CORRECTIVE ACTION: REPLACED MCD PRESSURE SEAL. OPS CHECK GOOD. IAW CL650 MM 21-31-00