As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REPEAT WRITE UP. DURING CRUISE AND DESCENT THERE WAS A HIGH PITCH SQUEAL FROM THE MAIN CABIN DOOR. MAX ALTITUDE WAS FL230. CABIN PRESSURE WAS NOT AFFECTED. REMOVED THE OLD SEALANT FROM THE DOOR FRAME THEN CLEANED THE DOOR FRAME. REPLACED MAIN DOOR RUBBER SEAL P/N: 505-38952-901, NSN. PRESSURIZATION LEAK CHECK GOOD WITH NO DEFECTS NOTED. WORK DONE IAW PHENOM 300 AMM 52-10-21-000-801-A/400