As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN DOOR ACOUSTIC SEAL SLOW/DELAYED DEFLATION UPON DOOR OPENING WITH APU RUNNING. DOOR DIFFICULT TO OPEN AS A RESULT AND HANDRAIL NOT LATCHING DOWN. CORRECTIVE ACTION: GAINED ACCESS TO DOOR DEFLATION VALVE AND FOUND IT TO HAVE A LARGE AMOUNT OF DIRT AND DEBRIS ON THE PLUNGER. CLEANED AND LUBRICATED AS NEEDED, IAW CE-560XLS 52-10-04. ALSO ADJUSTED DOOR HAND RAIL OVERCENTER MECHANISM, IAW CE-560XLS MM CH 52-10-01.