As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN DOOR: MAIN CABIN DOOR FAILED TO OPEN USING INTERIOR HANDLE. DOOR WAS ABLE TO BE OPENED USING EXTERIOR HANDLE. WE CYCLED THE DOOR WITH THE SAME RESULTS. REMOVED AND REPLACED NEW HARNESS PER SB680A-52-05 DATED SEPT. 20, 2019. WORK REF CESSNA CE680AS MM, CH. 52-70-00.