As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AIRCRAFT WAS UNDERGOING A SCHEDULED INSPECTION, NOTED THE RIVETS IN THE THE AFT LOWER CABIN DOOR HINGE APPEARED TO BE LOOSE. FURTHER VISUAL AND EDDY CURRENT INSPECTION SHOWED THE HINGE WAS CRACKED AT ALL THREE RIVET LOCATIONS. THE RIVETS HAD BEEN INSTALLED PREVIOUSLY IAW CESSNA BULLETIN PJN81-21. HINGE WAS REMOVED AND NEW PART INSTALLED.