As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN DOOR: WHEN THE APU IS RUNNING THE MAIN CABIN DOOR ACCUSTIC SEAL IS INFLATING ON IT'S OWN. THE SEAL INHIBITS THE USE OF THE MAIN CABIN DOOR. COULD BE A SAFTEY ISSUE IF CREW/PASEMGERS NEED TO EXIT THE AIRCRAFT. //SIGNOFF// REMOVED DEFECTIVE ACCOUSTIC DOOR SEAL INFLATION VALVE AND REPLACED WITH CUSTOMER SUPPUED NEW VALVE P/N: OFF/ON: 6211329·2 S/N: N/A, WORK PERFORMED IA.W CESSNA MODEL 560XL AMM 52-10·04. OPS CHECK GOOD, NO DEFECTS NOTED.